Chapel Hill - Aberdeen Proving Grounds (MD) Water Quality

Chapel Hill - Aberdeen Proving Grounds is a large public water system in EPA region 3 that provides tap water for the 21005 zip codes. It has 3 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 25.7 µg/L. The maximum reported level of Manganese was 4.6 µg/L. There were 2 contamintants found in the Chapel Hill - Aberdeen Proving Grounds water supply at levels that were above the minimum reporting level.

Table of Contents
Contaminants
Facilities
FAQ

Contaminants

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

1,1-dichloroethane (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

1,2,3-trichloropropane (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

1,3-butadiene (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.1 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.1 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.1 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.1 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

1,4-dioxane (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.07 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.07 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.07 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.07 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

1-butanol (3)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

2/20/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

8/23/2018

7 years ago

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

Contaminant Details

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

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

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

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

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

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

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

2,4-dinitrotoluene (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

12/11/2001

23 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

9/26/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

8/8/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

3/27/2001

24 years ago

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

Contaminant Details

2,6-dinitrotoluene (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

12/11/2001

23 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

9/26/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

8/8/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

3/27/2001

24 years ago

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

Contaminant Details

2-methoxyethanol (3)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.4 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.4 µg/L

Below Reporting Level

2/20/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.4 µg/L

Below Reporting Level

8/23/2018

7 years ago

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

Contaminant Details

2-propen-1-ol (Allyl Alcohol) (3)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.5 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.5 µg/L

Below Reporting Level

2/20/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.5 µg/L

Below Reporting Level

8/23/2018

7 years ago

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

Contaminant Details

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

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.8 µg/L

Below Reporting Level

12/11/2001

23 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.8 µg/L

Below Reporting Level

9/26/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.8 µg/L

Below Reporting Level

6/12/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.8 µg/L

Below Reporting Level

3/27/2001

24 years ago

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

Contaminant Details

4,8-dioxa-3H-perfluorononanoic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.002 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.002 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

alpha-hexachlorocyclohexane (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.01 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.01 µg/L

Below Reporting Level

3/26/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.01 µg/L

Below Reporting Level

11/28/2018

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.01 µg/L

Below Reporting Level

8/23/2018

7 years ago

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

Contaminant Details

anatoxin-a (8)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

8/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

8/7/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

7/17/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

7/3/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

6/20/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

6/5/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

5/9/2019

6 years ago

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

Contaminant Details

bromochloromethane (Halon 1011) (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.06 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.06 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.06 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.06 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

bromomethane (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

Butylated Hydroxyanisole (2)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

2/20/2019

6 years ago

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

Contaminant Details

chlorate (8)

631 Boat Dock

Distribution System ℹ️

611 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 591 µg/L

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

590 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 570 µg/L

7/23/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

222 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 202 µg/L

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

166 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 146 µg/L

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

223 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 203 µg/L

1/21/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

190 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 170 µg/L

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

487 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 467 µg/L

10/22/2014

10 years ago

631 Boat Dock

Distribution System ℹ️

381 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 361 µg/L

10/22/2014

10 years ago

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

Contaminant Details

chlorodifluoromethane (HCFC-22) (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.08 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.08 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.08 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.08 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

chloromethane (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

chlorpyrifos (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

3/26/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

11/28/2018

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

8/23/2018

7 years ago

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

Contaminant Details

chromium (8)

631 Boat Dock

Distribution System ℹ️

0.44 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.24 µg/L

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

0.41 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.21 µg/L

7/23/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

0.35 µg/L

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

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

0.33 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.13 µg/L

4/28/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

0.29 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.09 µg/L

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

0.27 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.07 µg/L

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

0.36 µg/L

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

10/22/2014

10 years ago

631 Boat Dock

Distribution System ℹ️

0.36 µg/L

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

10/22/2014

10 years ago

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

Contaminant Details

chromium-6 (8)

631 Boat Dock

Distribution System ℹ️

0.21 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.18 µg/L

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

0.14 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.11 µg/L

7/23/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

0.15 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.12 µg/L

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

0.13 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.1 µg/L

4/28/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

0.079 µg/L

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

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

1/21/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

0.18 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.15 µg/L

10/22/2014

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

0.16 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.13 µg/L

10/22/2014

10 years ago

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

Contaminant Details

cobalt (8)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

7/23/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

<1 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

4/28/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

<1 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

1/21/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

<1 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

10/22/2014

10 years ago

631 Boat Dock

Distribution System ℹ️

<1 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

cylindrospermopsin (8)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.09 µg/L

Below Reporting Level

8/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.09 µg/L

Below Reporting Level

8/7/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.09 µg/L

Below Reporting Level

7/17/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.09 µg/L

Below Reporting Level

7/3/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.09 µg/L

Below Reporting Level

6/20/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.09 µg/L

Below Reporting Level

6/5/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.09 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.09 µg/L

Below Reporting Level

5/9/2019

6 years ago

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

Contaminant Details

dimethipin (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

3/26/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

11/28/2018

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

8/23/2018

7 years ago

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

Contaminant Details

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

12/11/2001

23 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

9/26/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

6/12/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

3/27/2001

24 years ago

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

Contaminant Details

ethoprop (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

3/26/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

11/28/2018

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

8/23/2018

7 years ago

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

Contaminant Details

Germanium (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

2/20/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

11/28/2018

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

8/23/2018

7 years ago

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

Contaminant Details

HAA5 (five regulated haloacetic acids) (12)

740 Transonic

Distribution System ℹ️

19.2 µg/L

Meets Reporting Threshold

5/22/2019

6 years ago

120 Plumb Point

Distribution System ℹ️

16.6 µg/L

Meets Reporting Threshold

5/22/2019

6 years ago

631 Boat Dock

Distribution System ℹ️

14.4 µg/L

Meets Reporting Threshold

5/22/2019

6 years ago

30 Top of the Bay

Distribution System ℹ️

12.9 µg/L

Meets Reporting Threshold

5/22/2019

6 years ago

120 Plumb Point

Distribution System ℹ️

15.8 µg/L

Meets Reporting Threshold

11/28/2018

6 years ago

30 Top of the Bay

Distribution System ℹ️

14.7 µg/L

Meets Reporting Threshold

11/28/2018

6 years ago

740 Transonic

Distribution System ℹ️

14.1 µg/L

Meets Reporting Threshold

11/28/2018

6 years ago

631 Boat Dock

Distribution System ℹ️

11.8 µg/L

Meets Reporting Threshold

11/28/2018

6 years ago

740 Transonic

Distribution System ℹ️

25.7 µg/L

Meets Reporting Threshold

8/23/2018

7 years ago

30 Top of the Bay

Distribution System ℹ️

17.2 µg/L

Meets Reporting Threshold

8/23/2018

7 years ago

631 Boat Dock

Distribution System ℹ️

15.4 µg/L

Meets Reporting Threshold

8/23/2018

7 years ago

120 Plumb Point

Distribution System ℹ️

15 µg/L

Meets Reporting Threshold

8/23/2018

7 years ago

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

Contaminant Details

HAA6Br (six brominated haloacetic acids) (12)

740 Transonic

Distribution System ℹ️

6.2 µg/L

5/22/2019

6 years ago

120 Plumb Point

Distribution System ℹ️

6 µg/L

5/22/2019

6 years ago

30 Top of the Bay

Distribution System ℹ️

5.6 µg/L

5/22/2019

6 years ago

631 Boat Dock

Distribution System ℹ️

4.7 µg/L

5/22/2019

6 years ago

120 Plumb Point

Distribution System ℹ️

4.3 µg/L

11/28/2018

6 years ago

30 Top of the Bay

Distribution System ℹ️

4.2 µg/L

11/28/2018

6 years ago

740 Transonic

Distribution System ℹ️

4 µg/L

11/28/2018

6 years ago

631 Boat Dock

Distribution System ℹ️

3.4 µg/L

11/28/2018

6 years ago

740 Transonic

Distribution System ℹ️

4.7 µg/L

8/23/2018

7 years ago

30 Top of the Bay

Distribution System ℹ️

4.3 µg/L

8/23/2018

7 years ago

120 Plumb Point

Distribution System ℹ️

3.9 µg/L

8/23/2018

7 years ago

631 Boat Dock

Distribution System ℹ️

3.4 µg/L

8/23/2018

7 years ago

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

Contaminant Details

HAA9 (nine haloacetic acids) (12)

740 Transonic

Distribution System ℹ️

24.8 µg/L

5/22/2019

6 years ago

120 Plumb Point

Distribution System ℹ️

22 µg/L

5/22/2019

6 years ago

631 Boat Dock

Distribution System ℹ️

18.7 µg/L

5/22/2019

6 years ago

30 Top of the Bay

Distribution System ℹ️

17.8 µg/L

5/22/2019

6 years ago

120 Plumb Point

Distribution System ℹ️

20.1 µg/L

11/28/2018

6 years ago

30 Top of the Bay

Distribution System ℹ️

18.9 µg/L

11/28/2018

6 years ago

740 Transonic

Distribution System ℹ️

18.1 µg/L

11/28/2018

6 years ago

631 Boat Dock

Distribution System ℹ️

15.2 µg/L

11/28/2018

6 years ago

740 Transonic

Distribution System ℹ️

30 µg/L

8/23/2018

7 years ago

30 Top of the Bay

Distribution System ℹ️

21.1 µg/L

8/23/2018

7 years ago

631 Boat Dock

Distribution System ℹ️

18.8 µg/L

8/23/2018

7 years ago

120 Plumb Point

Distribution System ℹ️

18.5 µg/L

8/23/2018

7 years ago

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

Contaminant Details

hexafluoropropylene oxide dimer acid (GenX) (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

lithium (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<9 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<9 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

Manganese (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

4.6 µg/L

Meets Reporting Threshold

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

2 µg/L

Meets Reporting Threshold

2/20/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

0.67 µg/L

Meets Reporting Threshold

11/28/2018

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

1.4 µg/L

Meets Reporting Threshold

8/23/2018

7 years ago

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

Contaminant Details

methyl-tertiary-butyl-ether (MTBE) (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<5 µg/L

Below Reporting Level

12/11/2001

23 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<5 µg/L

Below Reporting Level

9/26/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<5 µg/L

Below Reporting Level

6/12/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<5 µg/L

Below Reporting Level

4/26/2001

24 years ago

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

Contaminant Details

molinate (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.9 µg/L

Below Reporting Level

12/11/2001

23 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.9 µg/L

Below Reporting Level

9/26/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.9 µg/L

Below Reporting Level

8/8/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.9 µg/L

Below Reporting Level

3/27/2001

24 years ago

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

Contaminant Details

molybdenum (8)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

7/23/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

<1 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

4/28/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

<1 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

1/21/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

<1 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

10/22/2014

10 years ago

631 Boat Dock

Distribution System ℹ️

<1 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

N-ethyl perfluorooctanesulfonamidoacetic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

N-methyl perfluorooctanesulfonamidoacetic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.006 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.006 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

nitrobenzene (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<10 µg/L

Below Reporting Level

12/11/2001

23 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<10 µg/L

Below Reporting Level

9/26/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<10 µg/L

Below Reporting Level

6/12/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<10 µg/L

Below Reporting Level

4/26/2001

24 years ago

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

Contaminant Details

nonafluoro-3,6-dioxaheptanoic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

o-toluidine (2)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.007 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.007 µg/L

Below Reporting Level

2/20/2019

6 years ago

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

Contaminant Details

oxyfluorfen (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.05 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.05 µg/L

Below Reporting Level

3/26/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.05 µg/L

Below Reporting Level

11/28/2018

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.05 µg/L

Below Reporting Level

8/23/2018

7 years ago

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

Contaminant Details

perchlorate (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<4 µg/L

Below Reporting Level

12/11/2001

23 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<4 µg/L

Below Reporting Level

9/26/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<4 µg/L

Below Reporting Level

6/12/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

19.9 µg/L

⚠️ Exceeds Reporting Level of 4 µg/L by 15.9 µg/L

3/27/2001

24 years ago

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

Contaminant Details

perfluoro(2-ethoxyethane)sulfonic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

perfluoro-3-methoxypropanoic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

perfluoro-4-methoxybutanoic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

perfluorobutanesulfonic acid (6)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/9/2023

2 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.09 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.09 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.09 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.09 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

perfluorobutanoic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.005 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

perfluorodecanoic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

perfluorododecanoic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

perfluoroheptanesulfonic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

perfluoroheptanoic acid (6)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/9/2023

2 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.01 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.01 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.01 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.01 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

perfluorohexanesulfonic acid (6)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/9/2023

2 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.03 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

perfluorohexanoic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

perfluorononanoic acid (6)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

3/9/2023

2 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.02 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.02 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.02 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.02 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

perfluorooctanesulfonic acid (6)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

3/9/2023

2 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.04 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.04 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.04 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.04 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

perfluorooctanoic acid (6)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

3/9/2023

2 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.02 µg/L

Below Reporting Level

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.02 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.02 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.02 µg/L

Below Reporting Level

10/22/2014

10 years ago

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

Contaminant Details

perfluoropentanesulfonic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.004 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

perfluoropentanoic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

perfluorotetradecanoic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.008 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.008 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

perfluorotridecanoic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.007 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.007 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

perfluoroundecanoic acid (2)

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.002 µg/L

Below Reporting Level

9/12/2023

25 months ago

B-250 POE Lab sink

APGN B-250 Water Treatment Plant ℹ️

<0.002 µg/L

Below Reporting Level

3/9/2023

2 years ago

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

Contaminant Details

profenofos (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

3/26/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

11/28/2018

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

8/23/2018

7 years ago

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

Contaminant Details

quinoline (2)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.02 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.02 µg/L

Below Reporting Level

2/20/2019

6 years ago

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

Contaminant Details

s-ethyl-dipropylthiocarbamate (EPTC) (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

12/11/2001

23 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

9/26/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

8/8/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<1 µg/L

Below Reporting Level

3/27/2001

24 years ago

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

Contaminant Details

strontium (8)

631 Boat Dock

Distribution System ℹ️

78.8 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 78.5 µg/L

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

66.7 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 66.4 µg/L

7/23/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

67.9 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 67.6 µg/L

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

65.4 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 65.1 µg/L

4/28/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

71.2 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 70.9 µg/L

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

66.5 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 66.2 µg/L

1/21/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

114 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 113.7 µg/L

10/22/2014

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

68.1 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 67.8 µg/L

10/22/2014

10 years ago

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

Contaminant Details

tebuconazole (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

3/26/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

11/28/2018

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

8/23/2018

7 years ago

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

Contaminant Details

terbacil (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

12/11/2001

23 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

9/26/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

8/8/2001

24 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<2 µg/L

Below Reporting Level

3/27/2001

24 years ago

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

Contaminant Details

total microcystins (8)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

8/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

8/7/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

7/17/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

7/3/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

6/20/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

6/5/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.3 µg/L

Below Reporting Level

5/9/2019

6 years ago

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

Contaminant Details

Total Permethrin (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.04 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.04 µg/L

Below Reporting Level

3/26/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.04 µg/L

Below Reporting Level

11/28/2018

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.04 µg/L

Below Reporting Level

8/23/2018

7 years ago

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

Contaminant Details

tribufos (4)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.07 µg/L

Below Reporting Level

5/22/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.07 µg/L

Below Reporting Level

3/26/2019

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.07 µg/L

Below Reporting Level

11/28/2018

6 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.07 µg/L

Below Reporting Level

8/23/2018

7 years ago

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

Contaminant Details

vanadium (8)

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

0.49 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.29 µg/L

7/23/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

0.43 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.23 µg/L

7/23/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

4/28/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

<0.2 µg/L

Below Reporting Level

4/28/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

<0.2 µg/L

Below Reporting Level

1/21/2015

10 years ago

631 Boat Dock

Distribution System ℹ️

<0.2 µg/L

Below Reporting Level

1/21/2015

10 years ago

Point of Entry from Chapel Hill WTP

Chapel Hill WTP ℹ️

0.3 µg/L

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

10/22/2014

10 years ago

631 Boat Dock

Distribution System ℹ️

0.25 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.05 µg/L

10/22/2014

10 years ago

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

Contaminant Details

Sampling Facilities

APGN B-250 Water Treatment Plant
Ground Water (GW)

B-250 POE Lab sinkEntry Point to the Distribution System (EP)

Chapel Hill WTP
Surface Water (SW)

Point of Entry from Chapel Hill WTPEntry Point to the Distribution System (EP)

Distribution System
Surface Water (SW)

631 Boat DockDistribution System (DS)

30 Top of the BayDistribution System (DS)

120 Plumb PointDistribution System (DS)

740 TransonicDistribution System (DS)

FAQ

Is Chapel Hill - Aberdeen Proving Grounds tap water safe to drink?

When was Chapel Hill - Aberdeen Proving Grounds last tested for water contamination?

The latest water samples were taken on September 12th, 2023.