City of Richland (WA) Water Quality

City of Richland is a large public water system in EPA region 10 that provides tap water for the 99352 zip codes. It has 7 facilities where the water supply was tested for 78 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 64.19 µg/L. Some (1 of 32 or 3%) of the latest water samples showed levels of HAA5 (five regulated haloacetic acids) that were at or above unsafe concentration levels. The maximum reported level of Manganese was 1.42 µg/L. There were 2 contamintants found in the City of Richland water supply at levels that were above the minimum reporting level. 1 of the contaminants were above the reference level, which means they may pose a risk to human health.

Table of Contents
Contaminants
Facilities
FAQ

Contaminants

Jump To Contaminant
1,1-dichloroethane (12)
1,2,3-trichloropropane (12)
1,3-butadiene (12)
1,4-dioxane (12)
1-butanol (12)
11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (10)
1H,1H,2H,2H-perfluorodecane sulfonic acid (10)
1H,1H,2H,2H-perfluorohexane sulfonic acid (10)
1H,1H,2H,2H-perfluorooctane sulfonic acid (10)
2,4-dinitrotoluene (10)
2,6-dinitrotoluene (10)
2-methoxyethanol (12)
2-propen-1-ol (Allyl Alcohol) (12)
4,4'-dichloro dichlorophenyl ethylene (DDE) (10)
4,8-dioxa-3H-perfluorononanoic acid (10)
9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (10)
alpha-hexachlorocyclohexane (12)
anatoxin-a (16)
bromochloromethane (Halon 1011) (12)
bromomethane (12)
Butylated Hydroxyanisole (12)
chlorate (24)
chlorodifluoromethane (HCFC-22) (12)
chloromethane (12)
chlorpyrifos (12)
chromium (24)
chromium-6 (24)
cobalt (24)
cylindrospermopsin (16)
dimethipin (12)
dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (10)
ethoprop (12)
Germanium (12)
HAA5 (five regulated haloacetic acids) (32)
HAA6Br (six brominated haloacetic acids) (32)
HAA9 (nine haloacetic acids) (32)
hexafluoropropylene oxide dimer acid (GenX) (10)
lithium (10)
Manganese (12)
methyl-tertiary-butyl-ether (MTBE) (10)
molinate (10)
molybdenum (24)
N-ethyl perfluorooctanesulfonamidoacetic acid (10)
N-methyl perfluorooctanesulfonamidoacetic acid (10)
nitrobenzene (10)
nonafluoro-3,6-dioxaheptanoic acid (10)
o-toluidine (12)
oxyfluorfen (12)
perchlorate (10)
perfluoro(2-ethoxyethane)sulfonic acid (10)
perfluoro-3-methoxypropanoic acid (10)
perfluoro-4-methoxybutanoic acid (10)
perfluorobutanesulfonic acid (22)
perfluorobutanoic acid (10)
perfluorodecanoic acid (10)
perfluorododecanoic acid (10)
perfluoroheptanesulfonic acid (10)
perfluoroheptanoic acid (22)
perfluorohexanesulfonic acid (22)
perfluorohexanoic acid (10)
perfluorononanoic acid (22)
perfluorooctanesulfonic acid (22)
perfluorooctanoic acid (22)
perfluoropentanesulfonic acid (10)
perfluoropentanoic acid (10)
perfluorotetradecanoic acid (10)
perfluorotridecanoic acid (10)
perfluoroundecanoic acid (10)
profenofos (12)
quinoline (12)
s-ethyl-dipropylthiocarbamate (EPTC) (10)
strontium (24)
tebuconazole (12)
terbacil (10)
total microcystins (16)
Total Permethrin (12)
tribufos (12)
vanadium (24)

1,1-dichloroethane (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.03 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.03 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.03 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.03 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

1,2,3-trichloropropane (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.03 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.03 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.03 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.03 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

1,3-butadiene (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.1 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.1 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.1 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.1 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.1 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.1 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.1 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.1 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.1 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.1 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.1 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.1 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.1 µg/L
Reference Level: ?

Contaminant Details

1,4-dioxane (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.07 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.07 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.07 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.07 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.07 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.07 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.07 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.07 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.07 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.07 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.07 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.07 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.07 µg/L
Reference Level: ?

Contaminant Details

1-butanol (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<2 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<2 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<2 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<2 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<2 µg/L

Below Reporting Level

10/8/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<2 µg/L

Below Reporting Level

10/8/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<2 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<2 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<2 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<2 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<2 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<2 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 2 µg/L
Reference Level: 700 µg/L

Contaminant Details

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.005 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

1H,1H,2H,2H-perfluorodecane sulfonic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.005 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

1H,1H,2H,2H-perfluorohexane sulfonic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.003 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

1H,1H,2H,2H-perfluorooctane sulfonic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.005 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

2,4-dinitrotoluene (10)

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<2 µg/L

Below Reporting Level

11/19/2001

23 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<2 µg/L

Below Reporting Level

8/22/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<2 µg/L

Below Reporting Level

6/19/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<2 µg/L

Below Reporting Level

6/19/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<2 µg/L

Below Reporting Level

6/19/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<2 µg/L

Below Reporting Level

5/14/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<2 µg/L

Below Reporting Level

2/12/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<2 µg/L

Below Reporting Level

1/29/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<2 µg/L

Below Reporting Level

1/29/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<2 µg/L

Below Reporting Level

1/29/2001

24 years ago

Minimum Reporting Level: 2 µg/L
Reference Level: ?

Contaminant Details

2,6-dinitrotoluene (10)

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<2 µg/L

Below Reporting Level

11/19/2001

23 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<2 µg/L

Below Reporting Level

8/22/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<2 µg/L

Below Reporting Level

6/19/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<2 µg/L

Below Reporting Level

6/19/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<2 µg/L

Below Reporting Level

6/19/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<2 µg/L

Below Reporting Level

5/14/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<2 µg/L

Below Reporting Level

2/12/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<2 µg/L

Below Reporting Level

1/29/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<2 µg/L

Below Reporting Level

1/29/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<2 µg/L

Below Reporting Level

1/29/2001

24 years ago

Minimum Reporting Level: 2 µg/L
Reference Level: ?

Contaminant Details

2-methoxyethanol (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.4 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.4 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.4 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.4 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.4 µg/L

Below Reporting Level

10/8/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.4 µg/L

Below Reporting Level

10/8/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.4 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.4 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.4 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.4 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.4 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.4 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.4 µg/L
Reference Level: 21 µg/L

Contaminant Details

2-propen-1-ol (Allyl Alcohol) (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.5 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.5 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.5 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.5 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.5 µg/L

Below Reporting Level

10/8/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.5 µg/L

Below Reporting Level

10/8/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.5 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.5 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.5 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.5 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.5 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.5 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.5 µg/L
Reference Level: 35 µg/L

Contaminant Details

4,4'-dichloro dichlorophenyl ethylene (DDE) (10)

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<0.8 µg/L

Below Reporting Level

11/19/2001

23 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<0.8 µg/L

Below Reporting Level

8/22/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<0.8 µg/L

Below Reporting Level

6/19/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<0.8 µg/L

Below Reporting Level

6/19/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<0.8 µg/L

Below Reporting Level

6/19/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<0.8 µg/L

Below Reporting Level

5/14/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<0.8 µg/L

Below Reporting Level

2/12/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<0.8 µg/L

Below Reporting Level

1/29/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<0.8 µg/L

Below Reporting Level

1/29/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<0.8 µg/L

Below Reporting Level

1/29/2001

24 years ago

Minimum Reporting Level: 0.8 µg/L
Reference Level: ?

Contaminant Details

4,8-dioxa-3H-perfluorononanoic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.003 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.002 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.002 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.002 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.002 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.002 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.002 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.002 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.002 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.002 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.002 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.002 µg/L
Reference Level: ?

Contaminant Details

alpha-hexachlorocyclohexane (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.01 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.01 µg/L

Below Reporting Level

1/8/2020

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.01 µg/L

Below Reporting Level

11/19/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.01 µg/L

Below Reporting Level

11/19/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.01 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.01 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.01 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.01 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.01 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.01 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.01 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.01 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.01 µg/L
Reference Level: 0.006 µg/L

Contaminant Details

anatoxin-a (16)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

11/19/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

11/19/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

10/15/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

10/15/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

0.06 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.03 µg/L

10/2/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

10/2/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

9/17/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

9/17/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

9/6/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

9/6/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

8/20/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

8/20/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

8/6/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

8/6/2019

6 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

bromochloromethane (Halon 1011) (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.06 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.06 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.06 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.06 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.06 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.06 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.06 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.06 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.06 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.06 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.06 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.06 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.06 µg/L
Reference Level: ?

Contaminant Details

bromomethane (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.2 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.2 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: ?

Contaminant Details

Butylated Hydroxyanisole (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.03 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

10/8/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.03 µg/L

Below Reporting Level

10/8/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.03 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.03 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

chlorate (24)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<20 µg/L

Below Reporting Level

3/10/2015

10 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<20 µg/L

Below Reporting Level

3/10/2015

10 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<20 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<20 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<20 µg/L

Below Reporting Level

1/13/2015

10 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

<20 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<20 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<20 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<20 µg/L

Below Reporting Level

12/2/2014

10 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<20 µg/L

Below Reporting Level

12/2/2014

10 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<20 µg/L

Below Reporting Level

12/2/2014

10 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

<20 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

34 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 14 µg/L

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<20 µg/L

Below Reporting Level

9/9/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<20 µg/L

Below Reporting Level

9/9/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<20 µg/L

Below Reporting Level

9/9/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

27 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 7 µg/L

6/3/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<20 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<20 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<20 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<20 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<20 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

<20 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

<20 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 20 µg/L
Reference Level: ?

Contaminant Details

chlorodifluoromethane (HCFC-22) (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.08 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.08 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.08 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.08 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.08 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.08 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.08 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.08 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.08 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.08 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.08 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.08 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.08 µg/L
Reference Level: ?

Contaminant Details

chloromethane (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.2 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.2 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: ?

Contaminant Details

chlorpyrifos (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

1/8/2020

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

11/19/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.03 µg/L

Below Reporting Level

11/19/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.03 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.03 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.03 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: 2 µg/L

Contaminant Details

chromium (24)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

3/10/2015

10 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

3/10/2015

10 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

1/13/2015

10 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

<0.2 µg/L

Below Reporting Level

1/13/2015

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

0.32 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.12 µg/L

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.2 µg/L

Below Reporting Level

12/2/2014

10 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

12/2/2014

10 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

12/2/2014

10 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

<0.2 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

0.3 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.1 µg/L

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

9/9/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

0.31 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.11 µg/L

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

0.26 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.06 µg/L

6/3/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

<0.2 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: ?

Contaminant Details

chromium-6 (24)

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

0.079 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.049 µg/L

3/10/2015

10 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

0.074 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.044 µg/L

3/10/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

0.054 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.024 µg/L

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

0.06 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.03 µg/L

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

0.082 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.052 µg/L

1/13/2015

10 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

0.082 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.052 µg/L

1/13/2015

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

0.354 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.324 µg/L

12/2/2014

10 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

0.082 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.052 µg/L

12/2/2014

10 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

0.079 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.049 µg/L

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

0.076 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.046 µg/L

12/2/2014

10 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

0.07 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.04 µg/L

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

0.046 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.016 µg/L

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

0.352 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.322 µg/L

9/9/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

0.1 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.07 µg/L

9/9/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

0.091 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.061 µg/L

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

0.079 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.049 µg/L

9/9/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

0.286 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.256 µg/L

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

0.25 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.22 µg/L

6/3/2014

11 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

0.067 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.037 µg/L

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

0.066 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.036 µg/L

6/3/2014

11 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

0.061 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.031 µg/L

6/3/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

0.059 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.029 µg/L

6/3/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

0.056 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.026 µg/L

6/3/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

0.046 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.016 µg/L

6/3/2014

11 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

cobalt (24)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<1 µg/L

Below Reporting Level

3/10/2015

10 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

3/10/2015

10 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<1 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<1 µg/L

Below Reporting Level

1/13/2015

10 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<1 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<1 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<1 µg/L

Below Reporting Level

12/2/2014

10 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

12/2/2014

10 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

12/2/2014

10 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 1 µg/L
Reference Level: ?

Contaminant Details

cylindrospermopsin (16)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.09 µg/L

Below Reporting Level

11/19/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.09 µg/L

Below Reporting Level

11/19/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.09 µg/L

Below Reporting Level

11/5/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.09 µg/L

Below Reporting Level

11/5/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.09 µg/L

Below Reporting Level

10/15/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.09 µg/L

Below Reporting Level

10/15/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.09 µg/L

Below Reporting Level

10/2/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.09 µg/L

Below Reporting Level

10/2/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.09 µg/L

Below Reporting Level

9/17/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.09 µg/L

Below Reporting Level

9/17/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.09 µg/L

Below Reporting Level

9/6/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.09 µg/L

Below Reporting Level

9/6/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.09 µg/L

Below Reporting Level

8/20/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.09 µg/L

Below Reporting Level

8/20/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.09 µg/L

Below Reporting Level

8/6/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.09 µg/L

Below Reporting Level

8/6/2019

6 years ago

Minimum Reporting Level: 0.09 µg/L
Reference Level: 0.7 µg/L

Contaminant Details

dimethipin (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

1/8/2020

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

11/19/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.2 µg/L

Below Reporting Level

11/19/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.2 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.2 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.2 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: 140 µg/L

Contaminant Details

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (10)

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<1 µg/L

Below Reporting Level

11/19/2001

23 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<1 µg/L

Below Reporting Level

8/22/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<1 µg/L

Below Reporting Level

6/19/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<1 µg/L

Below Reporting Level

6/19/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<1 µg/L

Below Reporting Level

6/19/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<1 µg/L

Below Reporting Level

5/14/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<1 µg/L

Below Reporting Level

2/12/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<1 µg/L

Below Reporting Level

1/29/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<1 µg/L

Below Reporting Level

1/29/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<1 µg/L

Below Reporting Level

1/29/2001

24 years ago

Minimum Reporting Level: 1 µg/L
Reference Level: ?

Contaminant Details

ethoprop (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

1/8/2020

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

11/19/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.03 µg/L

Below Reporting Level

11/19/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.03 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.03 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.03 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: 1.14 µg/L

Contaminant Details

Germanium (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.3 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

10/8/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.3 µg/L

Below Reporting Level

10/8/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.3 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.3 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.3 µg/L
Reference Level: ?

Contaminant Details

HAA5 (five regulated haloacetic acids) (32)

611 Horn Rapids Road

distrabution System ℹ️

31.89 µg/L

⚠️ Exceeds 50% of Reference Level

12/10/2019

5 years ago

2600 Clubhouse Lane

distrabution System ℹ️

26.24 µg/L

Meets Reporting Threshold

12/10/2019

5 years ago

1590 Meadow Hills Dr.

distrabution System ℹ️

25.16 µg/L

Meets Reporting Threshold

12/10/2019

5 years ago

204 Edgewood

distrabution System ℹ️

23.86 µg/L

Meets Reporting Threshold

12/10/2019

5 years ago

1939 Fowler

distrabution System ℹ️

23.54 µg/L

Meets Reporting Threshold

12/10/2019

5 years ago

2984 Lorayne

distrabution System ℹ️

20.57 µg/L

Meets Reporting Threshold

12/10/2019

5 years ago

4130 Kimberly

distrabution System ℹ️

20.28 µg/L

Meets Reporting Threshold

12/10/2019

5 years ago

2500 Vangiesen

distrabution System ℹ️

18.9 µg/L

Meets Reporting Threshold

12/10/2019

5 years ago

1590 Meadow Hills Dr.

distrabution System ℹ️

34.29 µg/L

⚠️ Exceeds 50% of Reference Level

9/10/2019

6 years ago

1939 Fowler

distrabution System ℹ️

32.36 µg/L

⚠️ Exceeds 50% of Reference Level

9/10/2019

6 years ago

2984 Lorayne

distrabution System ℹ️

30.15 µg/L

⚠️ Exceeds 50% of Reference Level

9/10/2019

6 years ago

4130 Kimberly

distrabution System ℹ️

29.33 µg/L

Meets Reporting Threshold

9/10/2019

6 years ago

204 Edgewood

distrabution System ℹ️

27.02 µg/L

Meets Reporting Threshold

9/10/2019

6 years ago

2500 Vangiesen

distrabution System ℹ️

16.24 µg/L

Meets Reporting Threshold

9/10/2019

6 years ago

2600 Clubhouse Lane

distrabution System ℹ️

13.49 µg/L

Meets Reporting Threshold

9/10/2019

6 years ago

611 Horn Rapids Road

distrabution System ℹ️

7.97 µg/L

Meets Reporting Threshold

9/10/2019

6 years ago

4130 Kimberly

distrabution System ℹ️

64.19 µg/L

☠️ Exceeds Reference Level by 4.19 µg/L

6/11/2019

6 years ago

1939 Fowler

distrabution System ℹ️

54.79 µg/L

❗ Exceeds 80% of Reference Level

6/11/2019

6 years ago

2600 Clubhouse Lane

distrabution System ℹ️

51.34 µg/L

❗ Exceeds 80% of Reference Level

6/11/2019

6 years ago

204 Edgewood

distrabution System ℹ️

49.61 µg/L

❗ Exceeds 80% of Reference Level

6/11/2019

6 years ago

1590 Meadow Hills Dr.

distrabution System ℹ️

40.8 µg/L

⚠️ Exceeds 50% of Reference Level

6/11/2019

6 years ago

2984 Lorayne

distrabution System ℹ️

36.16 µg/L

⚠️ Exceeds 50% of Reference Level

6/11/2019

6 years ago

2500 Vangiesen

distrabution System ℹ️

26.38 µg/L

Meets Reporting Threshold

6/11/2019

6 years ago

611 Horn Rapids Road

distrabution System ℹ️

10.45 µg/L

Meets Reporting Threshold

6/11/2019

6 years ago

2600 Clubhouse Lane

distrabution System ℹ️

33.09 µg/L

⚠️ Exceeds 50% of Reference Level

3/12/2019

6 years ago

611 Horn Rapids Road

distrabution System ℹ️

29.21 µg/L

Meets Reporting Threshold

3/12/2019

6 years ago

1590 Meadow Hills Dr.

distrabution System ℹ️

25.86 µg/L

Meets Reporting Threshold

3/12/2019

6 years ago

204 Edgewood

distrabution System ℹ️

24.7 µg/L

Meets Reporting Threshold

3/12/2019

6 years ago

1939 Fowler

distrabution System ℹ️

24.45 µg/L

Meets Reporting Threshold

3/12/2019

6 years ago

2984 Lorayne

distrabution System ℹ️

24.07 µg/L

Meets Reporting Threshold

3/12/2019

6 years ago

4130 Kimberly

distrabution System ℹ️

22.11 µg/L

Meets Reporting Threshold

3/12/2019

6 years ago

2500 Vangiesen

distrabution System ℹ️

21.43 µg/L

Meets Reporting Threshold

3/12/2019

6 years ago

Minimum Reporting Level: 0.5 µg/L
Reference Level: 60 µg/L

Contaminant Details

HAA6Br (six brominated haloacetic acids) (32)

1590 Meadow Hills Dr.

distrabution System ℹ️

7.3 µg/L

12/10/2019

5 years ago

204 Edgewood

distrabution System ℹ️

6.45 µg/L

12/10/2019

5 years ago

1939 Fowler

distrabution System ℹ️

6.08 µg/L

12/10/2019

5 years ago

4130 Kimberly

distrabution System ℹ️

6.05 µg/L

12/10/2019

5 years ago

2984 Lorayne

distrabution System ℹ️

5.88 µg/L

12/10/2019

5 years ago

2500 Vangiesen

distrabution System ℹ️

4.14 µg/L

12/10/2019

5 years ago

611 Horn Rapids Road

distrabution System ℹ️

2.4 µg/L

12/10/2019

5 years ago

2600 Clubhouse Lane

distrabution System ℹ️

1.88 µg/L

12/10/2019

5 years ago

2984 Lorayne

distrabution System ℹ️

4.7 µg/L

9/10/2019

6 years ago

1939 Fowler

distrabution System ℹ️

4.18 µg/L

9/10/2019

6 years ago

4130 Kimberly

distrabution System ℹ️

4.07 µg/L

9/10/2019

6 years ago

1590 Meadow Hills Dr.

distrabution System ℹ️

3.96 µg/L

9/10/2019

6 years ago

204 Edgewood

distrabution System ℹ️

3.61 µg/L

9/10/2019

6 years ago

2600 Clubhouse Lane

distrabution System ℹ️

1.87 µg/L

9/10/2019

6 years ago

2500 Vangiesen

distrabution System ℹ️

1.7 µg/L

9/10/2019

6 years ago

611 Horn Rapids Road

distrabution System ℹ️

1.39 µg/L

9/10/2019

6 years ago

4130 Kimberly

distrabution System ℹ️

4.67 µg/L

6/11/2019

6 years ago

1939 Fowler

distrabution System ℹ️

4.06 µg/L

6/11/2019

6 years ago

2984 Lorayne

distrabution System ℹ️

3.92 µg/L

6/11/2019

6 years ago

204 Edgewood

distrabution System ℹ️

3.64 µg/L

6/11/2019

6 years ago

1590 Meadow Hills Dr.

distrabution System ℹ️

2.6 µg/L

6/11/2019

6 years ago

2600 Clubhouse Lane

distrabution System ℹ️

1.92 µg/L

6/11/2019

6 years ago

2500 Vangiesen

distrabution System ℹ️

1.3 µg/L

6/11/2019

6 years ago

611 Horn Rapids Road

distrabution System ℹ️

0.47 µg/L

6/11/2019

6 years ago

1590 Meadow Hills Dr.

distrabution System ℹ️

8.55 µg/L

3/12/2019

6 years ago

1939 Fowler

distrabution System ℹ️

7.45 µg/L

3/12/2019

6 years ago

2984 Lorayne

distrabution System ℹ️

7.3 µg/L

3/12/2019

6 years ago

204 Edgewood

distrabution System ℹ️

7.19 µg/L

3/12/2019

6 years ago

4130 Kimberly

distrabution System ℹ️

5.42 µg/L

3/12/2019

6 years ago

2500 Vangiesen

distrabution System ℹ️

3.33 µg/L

3/12/2019

6 years ago

2600 Clubhouse Lane

distrabution System ℹ️

2.18 µg/L

3/12/2019

6 years ago

611 Horn Rapids Road

distrabution System ℹ️

2.05 µg/L

3/12/2019

6 years ago

Minimum Reporting Level: 0 µg/L
Reference Level: ?

Contaminant Details

HAA9 (nine haloacetic acids) (32)

611 Horn Rapids Road

distrabution System ℹ️

33.96 µg/L

12/10/2019

5 years ago

1590 Meadow Hills Dr.

distrabution System ℹ️

30.87 µg/L

12/10/2019

5 years ago

204 Edgewood

distrabution System ℹ️

28.9 µg/L

12/10/2019

5 years ago

1939 Fowler

distrabution System ℹ️

28.44 µg/L

12/10/2019

5 years ago

2600 Clubhouse Lane

distrabution System ℹ️

28.12 µg/L

12/10/2019

5 years ago

2984 Lorayne

distrabution System ℹ️

25.12 µg/L

12/10/2019

5 years ago

4130 Kimberly

distrabution System ℹ️

24.96 µg/L

12/10/2019

5 years ago

2500 Vangiesen

distrabution System ℹ️

21.82 µg/L

12/10/2019

5 years ago

1590 Meadow Hills Dr.

distrabution System ℹ️

37.84 µg/L

9/10/2019

6 years ago

1939 Fowler

distrabution System ℹ️

36.05 µg/L

9/10/2019

6 years ago

2984 Lorayne

distrabution System ℹ️

33.84 µg/L

9/10/2019

6 years ago

4130 Kimberly

distrabution System ℹ️

32.69 µg/L

9/10/2019

6 years ago

204 Edgewood

distrabution System ℹ️

30.05 µg/L

9/10/2019

6 years ago

2500 Vangiesen

distrabution System ℹ️

17.94 µg/L

9/10/2019

6 years ago

2600 Clubhouse Lane

distrabution System ℹ️

15.36 µg/L

9/10/2019

6 years ago

611 Horn Rapids Road

distrabution System ℹ️

9.36 µg/L

9/10/2019

6 years ago

4130 Kimberly

distrabution System ℹ️

68.06 µg/L

6/11/2019

6 years ago

1939 Fowler

distrabution System ℹ️

57.94 µg/L

6/11/2019

6 years ago

2600 Clubhouse Lane

distrabution System ℹ️

53.26 µg/L

6/11/2019

6 years ago

204 Edgewood

distrabution System ℹ️

52.38 µg/L

6/11/2019

6 years ago

1590 Meadow Hills Dr.

distrabution System ℹ️

43.4 µg/L

6/11/2019

6 years ago

2984 Lorayne

distrabution System ℹ️

38.43 µg/L

6/11/2019

6 years ago

2500 Vangiesen

distrabution System ℹ️

27.68 µg/L

6/11/2019

6 years ago

611 Horn Rapids Road

distrabution System ℹ️

10.92 µg/L

6/11/2019

6 years ago

2600 Clubhouse Lane

distrabution System ℹ️

35.27 µg/L

3/12/2019

6 years ago

1590 Meadow Hills Dr.

distrabution System ℹ️

32.02 µg/L

3/12/2019

6 years ago

611 Horn Rapids Road

distrabution System ℹ️

31.26 µg/L

3/12/2019

6 years ago

1939 Fowler

distrabution System ℹ️

30.02 µg/L

3/12/2019

6 years ago

204 Edgewood

distrabution System ℹ️

29.96 µg/L

3/12/2019

6 years ago

2984 Lorayne

distrabution System ℹ️

29.21 µg/L

3/12/2019

6 years ago

4130 Kimberly

distrabution System ℹ️

25.97 µg/L

3/12/2019

6 years ago

2500 Vangiesen

distrabution System ℹ️

23.96 µg/L

3/12/2019

6 years ago

Minimum Reporting Level: 0 µg/L
Reference Level: ?

Contaminant Details

hexafluoropropylene oxide dimer acid (GenX) (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.005 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

lithium (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<9 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<9 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<9 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<9 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<9 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<9 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<9 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<9 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<9 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<9 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 9 µg/L
Reference Level: ?

Contaminant Details

Manganese (12)

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

1.1 µg/L

Meets Reporting Threshold

1/8/2020

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.4 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.4 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.4 µg/L

Below Reporting Level

10/29/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

1.42 µg/L

Meets Reporting Threshold

10/8/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.4 µg/L

Below Reporting Level

10/8/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.4 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.4 µg/L

Below Reporting Level

7/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

0.41 µg/L

Meets Reporting Threshold

4/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.4 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.4 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.4 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.4 µg/L
Reference Level: 300 µg/L

Contaminant Details

methyl-tertiary-butyl-ether (MTBE) (10)

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<5 µg/L

Below Reporting Level

11/19/2001

23 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<5 µg/L

Below Reporting Level

8/22/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<5 µg/L

Below Reporting Level

6/19/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<5 µg/L

Below Reporting Level

6/19/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<5 µg/L

Below Reporting Level

6/19/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<5 µg/L

Below Reporting Level

5/14/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<5 µg/L

Below Reporting Level

2/12/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<5 µg/L

Below Reporting Level

1/29/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<5 µg/L

Below Reporting Level

1/29/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<5 µg/L

Below Reporting Level

1/29/2001

24 years ago

Minimum Reporting Level: 5 µg/L
Reference Level: ?

Contaminant Details

molinate (10)

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<0.9 µg/L

Below Reporting Level

11/19/2001

23 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<0.9 µg/L

Below Reporting Level

8/22/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<0.9 µg/L

Below Reporting Level

6/19/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<0.9 µg/L

Below Reporting Level

6/19/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<0.9 µg/L

Below Reporting Level

6/19/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<0.9 µg/L

Below Reporting Level

5/14/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<0.9 µg/L

Below Reporting Level

2/12/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<0.9 µg/L

Below Reporting Level

1/29/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<0.9 µg/L

Below Reporting Level

1/29/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<0.9 µg/L

Below Reporting Level

1/29/2001

24 years ago

Minimum Reporting Level: 0.9 µg/L
Reference Level: ?

Contaminant Details

molybdenum (24)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<1 µg/L

Below Reporting Level

3/10/2015

10 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

3/10/2015

10 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<1 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<1 µg/L

Below Reporting Level

1/13/2015

10 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

1/13/2015

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

1.4 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.4 µg/L

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<1 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<1 µg/L

Below Reporting Level

12/2/2014

10 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

12/2/2014

10 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

12/2/2014

10 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

1.3 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.3 µg/L

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

9/9/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

2.29 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.29 µg/L

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

1.47 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.47 µg/L

6/3/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 1 µg/L
Reference Level: ?

Contaminant Details

N-ethyl perfluorooctanesulfonamidoacetic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

5/2/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.005 µg/L

Below Reporting Level

5/2/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

N-methyl perfluorooctanesulfonamidoacetic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.006 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.006 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.006 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.006 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.006 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.006 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.006 µg/L

Below Reporting Level

5/2/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.006 µg/L

Below Reporting Level

5/2/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.006 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.006 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.006 µg/L
Reference Level: ?

Contaminant Details

nitrobenzene (10)

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<10 µg/L

Below Reporting Level

11/19/2001

23 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<10 µg/L

Below Reporting Level

8/22/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<10 µg/L

Below Reporting Level

6/19/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<10 µg/L

Below Reporting Level

6/19/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<10 µg/L

Below Reporting Level

6/19/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<10 µg/L

Below Reporting Level

5/14/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<10 µg/L

Below Reporting Level

2/12/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<10 µg/L

Below Reporting Level

1/29/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<10 µg/L

Below Reporting Level

1/29/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<10 µg/L

Below Reporting Level

1/29/2001

24 years ago

Minimum Reporting Level: 10 µg/L
Reference Level: ?

Contaminant Details

nonafluoro-3,6-dioxaheptanoic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.02 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.02 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.02 µg/L
Reference Level: ?

Contaminant Details

o-toluidine (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.007 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.007 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.007 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.007 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.007 µg/L

Below Reporting Level

10/8/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.007 µg/L

Below Reporting Level

10/8/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.007 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.007 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.007 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.007 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.007 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.007 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.007 µg/L
Reference Level: ?

Contaminant Details

oxyfluorfen (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.05 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.05 µg/L

Below Reporting Level

1/8/2020

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.05 µg/L

Below Reporting Level

11/19/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.05 µg/L

Below Reporting Level

11/19/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.05 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.05 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.05 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.05 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.05 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.05 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.05 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.05 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.05 µg/L
Reference Level: 200 µg/L

Contaminant Details

perchlorate (10)

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<4 µg/L

Below Reporting Level

11/19/2001

23 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<4 µg/L

Below Reporting Level

8/22/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<4 µg/L

Below Reporting Level

6/19/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<4 µg/L

Below Reporting Level

6/19/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<4 µg/L

Below Reporting Level

6/19/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<4 µg/L

Below Reporting Level

5/14/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<4 µg/L

Below Reporting Level

2/12/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<4 µg/L

Below Reporting Level

1/29/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<4 µg/L

Below Reporting Level

1/29/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<4 µg/L

Below Reporting Level

1/29/2001

24 years ago

Minimum Reporting Level: 4 µg/L
Reference Level: ?

Contaminant Details

perfluoro(2-ethoxyethane)sulfonic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.003 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluoro-3-methoxypropanoic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.004 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.004 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluoro-4-methoxybutanoic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.003 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorobutanesulfonic acid (22)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

0.0089 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0059 µg/L

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

3/23/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

0.0061 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0031 µg/L

3/13/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.09 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.09 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.09 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.09 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.09 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.09 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.09 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.09 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.09 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.09 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.09 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.09 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorobutanoic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

0.0066 µg/L

⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0016 µg/L

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.005 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

perfluorodecanoic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.003 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorododecanoic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.003 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluoroheptanesulfonic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.003 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluoroheptanoic acid (22)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

0.0058 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0028 µg/L

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.01 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.01 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.01 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.01 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.01 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.01 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.01 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.01 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.01 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.01 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.01 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.01 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorohexanesulfonic acid (22)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

0.0049 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0019 µg/L

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

3/23/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

0.0054 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0024 µg/L

3/13/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.03 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.03 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.03 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.03 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.03 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.03 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorohexanoic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

0.0116 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0086 µg/L

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

3/23/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

0.0066 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0036 µg/L

3/13/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorononanoic acid (22)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.004 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.004 µg/L

Below Reporting Level

3/13/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.02 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.02 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.02 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.02 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluorooctanesulfonic acid (22)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

0.017 µg/L

⚠️ Exceeds Reporting Level of 0.004 µg/L by 0.013 µg/L

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

3/23/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

0.005 µg/L

⚠️ Exceeds Reporting Level of 0.004 µg/L by 0.001 µg/L

3/13/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

3/13/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.04 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.04 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.04 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.04 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.04 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.04 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.04 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.04 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.04 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.04 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.04 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.04 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluorooctanoic acid (22)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

0.0101 µg/L

⚠️ Exceeds Reporting Level of 0.004 µg/L by 0.0061 µg/L

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

3/23/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

0.0048 µg/L

⚠️ Exceeds Reporting Level of 0.004 µg/L by 0.0008 µg/L

3/13/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

3/13/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

1/13/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.02 µg/L

Below Reporting Level

12/2/2014

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.02 µg/L

Below Reporting Level

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

9/9/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

6/3/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.02 µg/L

Below Reporting Level

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.02 µg/L

Below Reporting Level

6/3/2014

11 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluoropentanesulfonic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.004 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.004 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.004 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.004 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluoropentanoic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

0.0145 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0115 µg/L

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.003 µg/L

Below Reporting Level

3/23/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

0.0074 µg/L

⚠️ Exceeds Reporting Level of 0.003 µg/L by 0.0044 µg/L

3/13/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorotetradecanoic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.008 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.008 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.008 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.008 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.008 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.008 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.008 µg/L

Below Reporting Level

5/2/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.008 µg/L

Below Reporting Level

5/2/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.008 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.008 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.008 µg/L
Reference Level: ?

Contaminant Details

perfluorotridecanoic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.007 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.007 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.007 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.007 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.007 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.007 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.007 µg/L

Below Reporting Level

5/2/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.007 µg/L

Below Reporting Level

5/2/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.007 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.007 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.007 µg/L
Reference Level: ?

Contaminant Details

perfluoroundecanoic acid (10)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.002 µg/L

Below Reporting Level

12/4/2023

21 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.002 µg/L

Below Reporting Level

12/4/2023

21 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.002 µg/L

Below Reporting Level

9/6/2023

24 months ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.002 µg/L

Below Reporting Level

9/6/2023

24 months ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.002 µg/L

Below Reporting Level

6/21/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.002 µg/L

Below Reporting Level

6/21/2023

2 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.002 µg/L

Below Reporting Level

3/27/2023

2 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.002 µg/L

Below Reporting Level

3/23/2023

2 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.002 µg/L

Below Reporting Level

3/13/2023

2 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.002 µg/L

Below Reporting Level

3/13/2023

2 years ago

Minimum Reporting Level: 0.002 µg/L
Reference Level: ?

Contaminant Details

profenofos (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

1/8/2020

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

11/19/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.3 µg/L

Below Reporting Level

11/19/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.3 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.3 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.3 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.3 µg/L
Reference Level: 0.3 µg/L

Contaminant Details

quinoline (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.02 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

10/8/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.02 µg/L

Below Reporting Level

10/8/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.02 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.02 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.02 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.02 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.02 µg/L
Reference Level: 0.01 µg/L

Contaminant Details

s-ethyl-dipropylthiocarbamate (EPTC) (10)

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<1 µg/L

Below Reporting Level

11/19/2001

23 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<1 µg/L

Below Reporting Level

8/22/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<1 µg/L

Below Reporting Level

6/19/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<1 µg/L

Below Reporting Level

6/19/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<1 µg/L

Below Reporting Level

6/19/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<1 µg/L

Below Reporting Level

5/14/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<1 µg/L

Below Reporting Level

2/12/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<1 µg/L

Below Reporting Level

1/29/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<1 µg/L

Below Reporting Level

1/29/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<1 µg/L

Below Reporting Level

1/29/2001

24 years ago

Minimum Reporting Level: 1 µg/L
Reference Level: ?

Contaminant Details

strontium (24)

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

93.3 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 93 µg/L

3/10/2015

10 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

92 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 91.7 µg/L

3/10/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

86 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 85.7 µg/L

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

97.8 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 97.5 µg/L

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

113 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 112.7 µg/L

1/13/2015

10 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

110 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 109.7 µg/L

1/13/2015

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

269 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 268.7 µg/L

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

111 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 110.7 µg/L

12/2/2014

10 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

95 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 94.7 µg/L

12/2/2014

10 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

83.3 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 83 µg/L

12/2/2014

10 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

81 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 80.7 µg/L

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

79.8 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 79.5 µg/L

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

322 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 321.7 µg/L

9/9/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

109 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 108.7 µg/L

9/9/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

101 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 100.7 µg/L

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

83 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 82.7 µg/L

9/9/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

365 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 364.7 µg/L

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

247 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 246.7 µg/L

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

81.6 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 81.3 µg/L

6/3/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

81.2 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 80.9 µg/L

6/3/2014

11 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

77.6 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 77.3 µg/L

6/3/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

74.1 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 73.8 µg/L

6/3/2014

11 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

73.4 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 73.1 µg/L

6/3/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

63.7 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 63.4 µg/L

6/3/2014

11 years ago

Minimum Reporting Level: 0.3 µg/L
Reference Level: ?

Contaminant Details

tebuconazole (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

1/8/2020

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

11/19/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.2 µg/L

Below Reporting Level

11/19/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.2 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.2 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.2 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.2 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: 190 µg/L

Contaminant Details

terbacil (10)

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<2 µg/L

Below Reporting Level

11/19/2001

23 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<2 µg/L

Below Reporting Level

8/22/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<2 µg/L

Below Reporting Level

6/19/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<2 µg/L

Below Reporting Level

6/19/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<2 µg/L

Below Reporting Level

6/19/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<2 µg/L

Below Reporting Level

5/14/2001

24 years ago

110 SAINT,CLEARWELL TAP LAB

Columbia River ℹ️

<2 µg/L

Below Reporting Level

2/12/2001

24 years ago

1182BLDG SINK TAP LEE BLVD.

WLSN WY/S12-15 ℹ️

<2 µg/L

Below Reporting Level

1/29/2001

24 years ago

1ST ST HYDRANT SAMPLE PORT

N. Richland Slow Sand Filter Facility ℹ️

<2 µg/L

Below Reporting Level

1/29/2001

24 years ago

1100B WELL METER VAULT @ WTP

Columbia Well ℹ️

<2 µg/L

Below Reporting Level

1/29/2001

24 years ago

Minimum Reporting Level: 2 µg/L
Reference Level: ?

Contaminant Details

total microcystins (16)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

11/19/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

11/19/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

11/5/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

11/5/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

10/15/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

10/15/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

10/2/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

10/2/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

9/17/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

9/17/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

9/6/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

9/6/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

8/20/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

8/20/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.3 µg/L

Below Reporting Level

8/6/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.3 µg/L

Below Reporting Level

8/6/2019

6 years ago

Minimum Reporting Level: 0.3 µg/L
Reference Level: ?

Contaminant Details

Total Permethrin (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.04 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.04 µg/L

Below Reporting Level

1/8/2020

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.04 µg/L

Below Reporting Level

11/19/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.04 µg/L

Below Reporting Level

11/19/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.04 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.04 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.04 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.04 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.04 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.04 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.04 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.04 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.04 µg/L
Reference Level: 3.344 µg/L

Contaminant Details

tribufos (12)

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.07 µg/L

Below Reporting Level

1/8/2020

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.07 µg/L

Below Reporting Level

1/8/2020

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.07 µg/L

Below Reporting Level

11/19/2019

5 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.07 µg/L

Below Reporting Level

11/19/2019

5 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.07 µg/L

Below Reporting Level

10/29/2019

5 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.07 µg/L

Below Reporting Level

10/29/2019

5 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.07 µg/L

Below Reporting Level

7/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.07 µg/L

Below Reporting Level

7/9/2019

6 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.07 µg/L

Below Reporting Level

4/9/2019

6 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

<0.07 µg/L

Below Reporting Level

4/9/2019

6 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

<0.07 µg/L

Below Reporting Level

4/9/2019

6 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

<0.07 µg/L

Below Reporting Level

4/9/2019

6 years ago

Minimum Reporting Level: 0.07 µg/L
Reference Level: 0.6 µg/L

Contaminant Details

vanadium (24)

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

0.63 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.43 µg/L

3/10/2015

10 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

0.54 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.34 µg/L

3/10/2015

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

<0.2 µg/L

Below Reporting Level

3/10/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

0.76 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.56 µg/L

2/24/2015

10 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

1.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1 µg/L

1/13/2015

10 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

1.1 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.9 µg/L

1/13/2015

10 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

7.08 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 6.88 µg/L

12/2/2014

10 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

1.6 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.4 µg/L

12/2/2014

10 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

0.46 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.26 µg/L

12/2/2014

10 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

0.31 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.11 µg/L

12/2/2014

10 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

0.28 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.08 µg/L

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

0.22 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.02 µg/L

12/2/2014

10 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

1.3 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.1 µg/L

9/9/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

0.5 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.3 µg/L

9/9/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

0.5 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.3 µg/L

9/9/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

0.5 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.3 µg/L

9/9/2014

11 years ago

1182 Bldg. Sink Tap Lee Blvd.

WLSN WY/S12-15 ℹ️

3.3 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 3.1 µg/L

6/3/2014

11 years ago

1100B Well Meter Vault @ WTP

Columbia Well ℹ️

1.1 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.9 µg/L

6/3/2014

11 years ago

555 University Dr. Sample Station

N. Richland Slow Sand Filter Facility ℹ️

0.42 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.22 µg/L

6/3/2014

11 years ago

RC-16 3102 Twin Bridges Rd.

Distribution System - GW ℹ️

0.38 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.18 µg/L

6/3/2014

11 years ago

RC-10 1900 Jadwin Ave

Distribution System - SW ℹ️

0.37 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.17 µg/L

6/3/2014

11 years ago

RC-23 2711 Stone Creeek

Distribution System - GW ℹ️

0.36 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.16 µg/L

6/3/2014

11 years ago

RC-22 2500 Van Giesen

Distribution System - SW ℹ️

0.35 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.15 µg/L

6/3/2014

11 years ago

110 Saint, Clearwell Tap Lab

Columbia River ℹ️

0.32 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.12 µg/L

6/3/2014

11 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: ?

Contaminant Details

Sampling Facilities

Columbia River
Surface Water (SW)

110 Saint, Clearwell Tap LabEntry Point to the Distribution System (EP)

110 SAINT,CLEARWELL TAP LABEntry Point to the Distribution System (EP)

WLSN WY/S12-15
Ground Water (GW)

1182 Bldg. Sink Tap Lee Blvd.Entry Point to the Distribution System (EP)

1182BLDG SINK TAP LEE BLVD.Entry Point to the Distribution System (EP)

N. Richland Slow Sand Filter Facility
Surface Water (SW)

555 University Dr. Sample StationEntry Point to the Distribution System (EP)

1ST ST HYDRANT SAMPLE PORTEntry Point to the Distribution System (EP)

Columbia Well
Ground Water (GW)

1100B Well Meter Vault @ WTPEntry Point to the Distribution System (EP)

1100B WELL METER VAULT @ WTPEntry Point to the Distribution System (EP)

distrabution System
Multiple Sources (MX)

2500 VangiesenDistribution System (DS)

1939 FowlerDistribution System (DS)

2600 Clubhouse LaneDistribution System (DS)

611 Horn Rapids RoadDistribution System (DS)

204 EdgewoodDistribution System (DS)

4130 KimberlyDistribution System (DS)

2984 LorayneDistribution System (DS)

1590 Meadow Hills Dr.Distribution System (DS)

Distribution System - SW
Surface Water (SW)

RC-10 1900 Jadwin AveMaximum Residence Time (MR)

RC-22 2500 Van GiesenMaximum Residence Time (MR)

Distribution System - GW
Ground Water (GW)

RC-16 3102 Twin Bridges Rd.Maximum Residence Time (MR)

RC-23 2711 Stone CreeekMaximum Residence Time (MR)

FAQ

Is City of Richland tap water safe to drink?

When was City of Richland last tested for water contamination?

The latest water samples were taken on December 4th, 2023.