Village of Hempstead (NY) Water Quality

Village of Hempstead is a large public water system in EPA region 2 that provides tap water for the 11530, 11552, 11553 zip codes. It has 14 facilities where the water supply was tested for 82 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 0.75 µg/L. The maximum reported level of Manganese was 4.1 µg/L. There were 2 contamintants found in the Village of Hempstead water supply at levels that were above the minimum reporting level.

Table of Contents
Contaminants
Facilities
FAQ

Contaminants

Jump To Contaminant
1,1-dichloroethane
1,2,3-trichloropropane
1,3-butadiene
1,4-dioxane
1-butanol
11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid
17-alpha-ethynylestradiol
17-beta-estradiol
1H,1H,2H,2H-perfluorodecane sulfonic acid
1H,1H,2H,2H-perfluorohexane sulfonic acid
1H,1H,2H,2H-perfluorooctane sulfonic acid
2,4-dinitrotoluene
2,6-dinitrotoluene
2-methoxyethanol
2-propen-1-ol (Allyl Alcohol)
4,4'-dichloro dichlorophenyl ethylene (DDE)
4,8-dioxa-3H-perfluorononanoic acid
4-androstene-3,17-dione
9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid
alpha-hexachlorocyclohexane
bromochloromethane (Halon 1011)
bromomethane
Butylated Hydroxyanisole
chlorate
chlorodifluoromethane (HCFC-22)
chloromethane
chlorpyrifos
chromium
chromium-6
cobalt
dimethipin
dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate
equilin
estriol
estrone
ethoprop
Germanium
HAA5 (five regulated haloacetic acids)
HAA6Br (six brominated haloacetic acids)
HAA9 (nine haloacetic acids)
hexafluoropropylene oxide dimer acid (GenX)
lithium
Manganese
methyl-tertiary-butyl-ether (MTBE)
molinate
molybdenum
N-ethyl perfluorooctanesulfonamidoacetic acid
N-methyl perfluorooctanesulfonamidoacetic acid
nitrobenzene
nonafluoro-3,6-dioxaheptanoic acid
o-toluidine
oxyfluorfen
perchlorate
perfluoro(2-ethoxyethane)sulfonic acid
perfluoro-3-methoxypropanoic acid
perfluoro-4-methoxybutanoic acid
perfluorobutanesulfonic acid
perfluorobutanoic acid
perfluorodecanoic acid
perfluorododecanoic acid
perfluoroheptanesulfonic acid
perfluoroheptanoic acid
perfluorohexanesulfonic acid
perfluorohexanoic acid
perfluorononanoic acid
perfluorooctanesulfonic acid
perfluorooctanoic acid
perfluoropentanesulfonic acid
perfluoropentanoic acid
perfluorotetradecanoic acid
perfluorotridecanoic acid
perfluoroundecanoic acid
profenofos
quinoline
s-ethyl-dipropylthiocarbamate (EPTC)
strontium
tebuconazole
terbacil
testosterone
Total Permethrin
tribufos
vanadium

1,1-dichloroethane (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

1,2,3-trichloropropane (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

1,3-butadiene (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.1 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.1 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.1 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.1 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

1,4-dioxane (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

4 µg/L

⚠️ Exceeds Reporting Level of 0.07 µg/L by 3.93 µg/L

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.07 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

4.5 µg/L

⚠️ Exceeds Reporting Level of 0.07 µg/L by 4.43 µg/L

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.07 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

1-butanol (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<2 µg/L

Below Reporting Level

12/20/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<2 µg/L

Below Reporting Level

12/20/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<2 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<2 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

17-alpha-ethynylestradiol (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.0009 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.0009 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.0009 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.0009 µg/L

Below Reporting Level

6/18/2013

12 years ago

Minimum Reporting Level: 0.0009 µg/L
Reference Level: ?

Contaminant Details

17-beta-estradiol (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.0004 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.0004 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.0004 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.0004 µg/L

Below Reporting Level

6/18/2013

12 years ago

Minimum Reporting Level: 0.0004 µg/L
Reference Level: ?

Contaminant Details

1H,1H,2H,2H-perfluorodecane sulfonic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

1H,1H,2H,2H-perfluorohexane sulfonic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

1H,1H,2H,2H-perfluorooctane sulfonic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

2,4-dinitrotoluene (17)

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<2 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<2 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<2 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<2 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 2 SRN00079

N 00079 - WELL 2 ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

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

Contaminant Details

2,6-dinitrotoluene (17)

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<2 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<2 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<2 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<2 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 2 SRN00079

N 00079 - WELL 2 ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

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

Contaminant Details

2-methoxyethanol (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.4 µg/L

Below Reporting Level

12/20/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.4 µg/L

Below Reporting Level

12/20/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.4 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.4 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

2-propen-1-ol (Allyl Alcohol) (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.5 µg/L

Below Reporting Level

12/20/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.5 µg/L

Below Reporting Level

12/20/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.5 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.5 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

4,4'-dichloro dichlorophenyl ethylene (DDE) (17)

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<0.8 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<0.8 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<0.8 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<0.8 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<0.8 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<0.8 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<0.8 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<0.8 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<0.8 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<0.8 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<0.8 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<0.8 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 2 SRN00079

N 00079 - WELL 2 ℹ️

<0.8 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<0.8 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<0.8 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<0.8 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<0.8 µg/L

Below Reporting Level

1/28/2003

22 years ago

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

Contaminant Details

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

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

4-androstene-3,17-dione (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.0003 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.0003 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.0003 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.0003 µg/L

Below Reporting Level

6/18/2013

12 years ago

Minimum Reporting Level: 0.0003 µg/L
Reference Level: ?

Contaminant Details

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.002 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.002 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.002 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.002 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

alpha-hexachlorocyclohexane (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.01 µg/L

Below Reporting Level

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.01 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.01 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.01 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

bromochloromethane (Halon 1011) (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.06 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.06 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.06 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.06 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

bromomethane (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

Butylated Hydroxyanisole (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

chlorate (8)

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

31 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 11 µg/L

12/26/2013

11 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

27 µg/L

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

12/26/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

200 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 180 µg/L

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

28 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 8 µg/L

12/25/2013

11 years ago

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

160 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 140 µg/L

9/17/2013

11 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

110 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 90 µg/L

9/17/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

200 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 180 µg/L

6/18/2013

12 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

84 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 64 µg/L

6/18/2013

12 years ago

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

Contaminant Details

chlorodifluoromethane (HCFC-22) (4)

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

0.45 µg/L

⚠️ Exceeds Reporting Level of 0.08 µg/L by 0.37 µg/L

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.08 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

0.89 µg/L

⚠️ Exceeds Reporting Level of 0.08 µg/L by 0.81 µg/L

6/18/2013

12 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.08 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

chloromethane (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

chlorpyrifos (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

chromium (8)

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

0.33 µg/L

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

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/25/2013

11 years ago

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/25/2013

11 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

9/17/2013

11 years ago

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

9/17/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

0.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0 µg/L

8/13/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

0.28 µg/L

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

6/18/2013

12 years ago

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

Contaminant Details

chromium-6 (8)

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

0.31 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.28 µg/L

12/25/2013

11 years ago

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

0.11 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.08 µg/L

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

0.098 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.068 µg/L

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

0.048 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.018 µg/L

12/25/2013

11 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

0.052 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.022 µg/L

9/17/2013

11 years ago

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

0.049 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.019 µg/L

9/17/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

0.049 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.019 µg/L

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

0.04 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.01 µg/L

6/18/2013

12 years ago

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

Contaminant Details

cobalt (8)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

12/25/2013

11 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

12/25/2013

11 years ago

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

12/25/2013

11 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

1.3 µg/L

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

9/17/2013

11 years ago

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

9/17/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

1.6 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.6 µg/L

8/13/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

dimethipin (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (19)

WELL 1R/6 EPN04425/00083

AIR STRIPPER - WELLS 1R & 6 ℹ️

<1 µg/L

Below Reporting Level

6/8/2004

21 years ago

WELL 1R/6 EPN04425/00083

AIR STRIPPER - WELLS 1R & 6 ℹ️

1 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0 µg/L

12/10/2003

21 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

1 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0 µg/L

7/9/2003

22 years ago

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<1 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<1 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<1 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<1 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 2 SRN00079

N 00079 - WELL 2 ℹ️

1.3 µg/L

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

1/28/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<1 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<1 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<1 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<1 µg/L

Below Reporting Level

1/28/2003

22 years ago

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

Contaminant Details

equilin (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

estriol (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.0008 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.0008 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.0008 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.0008 µg/L

Below Reporting Level

6/18/2013

12 years ago

Minimum Reporting Level: 0.0008 µg/L
Reference Level: ?

Contaminant Details

estrone (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.002 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.002 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.002 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.002 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

ethoprop (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

Germanium (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.3 µg/L

Below Reporting Level

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.3 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.3 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.3 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

HAA5 (five regulated haloacetic acids) (4)

N-160030 60 Front St Country Club

Hempstead Water Plant ℹ️

0.64 µg/L

Meets Reporting Threshold

12/11/2018

6 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

0 µg/L

Meets Reporting Threshold

12/11/2018

6 years ago

N-160030 60 Front St Country Club

Hempstead Water Plant ℹ️

0.75 µg/L

Meets Reporting Threshold

6/26/2018

7 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

0.33 µg/L

Meets Reporting Threshold

6/26/2018

7 years ago

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

Contaminant Details

HAA6Br (six brominated haloacetic acids) (4)

N-160030 60 Front St Country Club

Hempstead Water Plant ℹ️

0.64 µg/L

12/11/2018

6 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

0 µg/L

12/11/2018

6 years ago

N-160030 60 Front St Country Club

Hempstead Water Plant ℹ️

0.46 µg/L

6/26/2018

7 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

0 µg/L

6/26/2018

7 years ago

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

Contaminant Details

HAA9 (nine haloacetic acids) (4)

N-160030 60 Front St Country Club

Hempstead Water Plant ℹ️

0.64 µg/L

12/11/2018

6 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

0 µg/L

12/11/2018

6 years ago

N-160030 60 Front St Country Club

Hempstead Water Plant ℹ️

0.75 µg/L

6/26/2018

7 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

0.33 µg/L

6/26/2018

7 years ago

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

Contaminant Details

hexafluoropropylene oxide dimer acid (GenX) (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

lithium (4)

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<9 µg/L

Below Reporting Level

7/30/2024

13 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<9 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<9 µg/L

Below Reporting Level

1/30/2024

19 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<9 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

Manganese (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

4.1 µg/L

Meets Reporting Threshold

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.4 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

3.1 µg/L

Meets Reporting Threshold

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.4 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

methyl-tertiary-butyl-ether (MTBE) (17)

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<5 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<5 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<5 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<5 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<5 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<5 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<5 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<5 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<5 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<5 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<5 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<5 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 2 SRN00079

N 00079 - WELL 2 ℹ️

<5 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<5 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<5 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<5 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<5 µg/L

Below Reporting Level

1/28/2003

22 years ago

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

Contaminant Details

molinate (17)

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<0.9 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<0.9 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<0.9 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<0.9 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<0.9 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<0.9 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<0.9 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<0.9 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<0.9 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<0.9 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<0.9 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<0.9 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 2 SRN00079

N 00079 - WELL 2 ℹ️

<0.9 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<0.9 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<0.9 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<0.9 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<0.9 µg/L

Below Reporting Level

1/28/2003

22 years ago

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

Contaminant Details

molybdenum (8)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

12/25/2013

11 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

12/25/2013

11 years ago

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

12/25/2013

11 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

9/17/2013

11 years ago

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

9/17/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

8/13/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<1 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

N-ethyl perfluorooctanesulfonamidoacetic acid (4)

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

7/30/2024

13 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/30/2024

19 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

N-methyl perfluorooctanesulfonamidoacetic acid (4)

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.006 µg/L

Below Reporting Level

7/30/2024

13 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.006 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.006 µg/L

Below Reporting Level

1/30/2024

19 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.006 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

nitrobenzene (17)

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<10 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<10 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<10 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<10 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<10 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<10 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<10 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<10 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<10 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<10 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<10 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<10 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 2 SRN00079

N 00079 - WELL 2 ℹ️

<10 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<10 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<10 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<10 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<10 µg/L

Below Reporting Level

1/28/2003

22 years ago

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

Contaminant Details

nonafluoro-3,6-dioxaheptanoic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

o-toluidine (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.007 µg/L

Below Reporting Level

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.007 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.007 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.007 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

oxyfluorfen (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.05 µg/L

Below Reporting Level

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.05 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.05 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.05 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

perchlorate (17)

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<4 µg/L

Below Reporting Level

7/10/2003

22 years ago

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<4 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<4 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<4 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<4 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<4 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<4 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<4 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<4 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<4 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<4 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<4 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 2 SRN00079

N 00079 - WELL 2 ℹ️

<4 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<4 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<4 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<4 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<4 µg/L

Below Reporting Level

1/28/2003

22 years ago

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

Contaminant Details

perfluoro(2-ethoxyethane)sulfonic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

perfluoro-3-methoxypropanoic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

perfluoro-4-methoxybutanoic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

perfluorobutanesulfonic acid (8)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/18/2023

25 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.09 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.09 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.09 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.09 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

perfluorobutanoic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.005 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

perfluorodecanoic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

perfluorododecanoic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

perfluoroheptanesulfonic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

perfluoroheptanoic acid (8)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/18/2023

25 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.01 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.01 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.01 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.01 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

perfluorohexanesulfonic acid (8)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/18/2023

25 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.03 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

perfluorohexanoic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

perfluorononanoic acid (8)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

7/18/2023

25 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

perfluorooctanesulfonic acid (8)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

0.0047 µg/L

⚠️ Exceeds Reporting Level of 0.004 µg/L by 0.0007 µg/L

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

7/18/2023

25 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.04 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.04 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.04 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.04 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

perfluorooctanoic acid (8)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

7/18/2023

25 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

perfluoropentanesulfonic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.004 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

perfluoropentanoic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.003 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

perfluorotetradecanoic acid (4)

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.008 µg/L

Below Reporting Level

7/30/2024

13 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.008 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.008 µg/L

Below Reporting Level

1/30/2024

19 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.008 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

perfluorotridecanoic acid (4)

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.007 µg/L

Below Reporting Level

7/30/2024

13 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.007 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.007 µg/L

Below Reporting Level

1/30/2024

19 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.007 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

perfluoroundecanoic acid (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.002 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.002 µg/L

Below Reporting Level

1/30/2024

19 months ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.002 µg/L

Below Reporting Level

9/6/2023

24 months ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.002 µg/L

Below Reporting Level

7/18/2023

25 months ago

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

Contaminant Details

profenofos (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.3 µg/L

Below Reporting Level

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.3 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.3 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.3 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

quinoline (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.02 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

s-ethyl-dipropylthiocarbamate (EPTC) (17)

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<1 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<1 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<1 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<1 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<1 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 2 SRN00079

N 00079 - WELL 2 ℹ️

<1 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<1 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<1 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<1 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<1 µg/L

Below Reporting Level

1/28/2003

22 years ago

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

Contaminant Details

strontium (8)

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

25.5 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 25.2 µg/L

12/25/2013

11 years ago

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

18.8 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 18.5 µg/L

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

17 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 16.7 µg/L

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

10.2 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 9.9 µg/L

12/25/2013

11 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

35 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 34.7 µg/L

9/17/2013

11 years ago

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

24 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 23.7 µg/L

9/17/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

20 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 19.7 µg/L

8/13/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

13 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 12.7 µg/L

6/18/2013

12 years ago

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

Contaminant Details

tebuconazole (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

terbacil (17)

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<2 µg/L

Below Reporting Level

7/9/2003

22 years ago

WELL 7 SRN03668

N 03668 - WELL 7 ℹ️

<2 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 4 SRN00081

N 00081 - WELL 4 ℹ️

<2 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 6 SRN00083

N 00083 - WELL 6 ℹ️

<2 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 5 SRN00082

N 00082 - WELL 5 ℹ️

<2 µg/L

Below Reporting Level

1/29/2003

22 years ago

WELL 2 SRN00079

N 00079 - WELL 2 ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 1R SRN04425

N 04425 - WELL 1R ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 3 SRN00080

N 00080 - WELL 3 ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 8 SRN07298

N 07298 - WELL 8 ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

WELL 9 SRN08264

N 08264 - WELL 9 ℹ️

<2 µg/L

Below Reporting Level

1/28/2003

22 years ago

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

Contaminant Details

testosterone (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.0001 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.0001 µg/L

Below Reporting Level

12/25/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.0001 µg/L

Below Reporting Level

6/18/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.0001 µg/L

Below Reporting Level

6/18/2013

12 years ago

Minimum Reporting Level: 0.0001 µg/L
Reference Level: ?

Contaminant Details

Total Permethrin (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.04 µg/L

Below Reporting Level

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.04 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.04 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.04 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

tribufos (4)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.07 µg/L

Below Reporting Level

12/11/2018

6 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.07 µg/L

Below Reporting Level

12/11/2018

6 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.07 µg/L

Below Reporting Level

6/26/2018

7 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.07 µg/L

Below Reporting Level

6/26/2018

7 years ago

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

Contaminant Details

vanadium (8)

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/25/2013

11 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/25/2013

11 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/25/2013

11 years ago

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

12/25/2013

11 years ago

N-160070 10 Holly Ave Firehouse

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

9/17/2013

11 years ago

60 Front St. Golf Club MR

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

9/17/2013

11 years ago

160130 Clinton St Plt

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

8/13/2013

12 years ago

IF-7/9 Well 7&9 iron filtration

Hempstead Water Plant ℹ️

<0.2 µg/L

Below Reporting Level

6/18/2013

12 years ago

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

Contaminant Details

Sampling Facilities

Hempstead Water Plant
Ground Water (GW)

160130 Clinton St PltEntry Point to the Distribution System (EP)

Clinton St Plant EPEntry Point to the Distribution System (EP)

Hempstead Water Plant
Ground Water (GW)

IF-7/9 Well 7&9 iron filtrationEntry Point to the Distribution System (EP)

Laurel Ave Plant EPEntry Point to the Distribution System (EP)

Hempstead Water Plant
Ground Water (GW)

N-160070 10 Holly Ave FirehouseDistribution System (DS)

60 Front St. Golf Club MRMaximum Residence Time (MR)

Hempstead Water Plant
Ground Water (GW)

N-160030 60 Front St Country ClubDistribution System (DS)

AIR STRIPPER - WELLS 1R & 6
Ground Water (GW)

WELL 1R/6 EPN04425/00083Entry Point to the Distribution System (EP)

N 00079 - WELL 2
Ground Water (GW)

WELL 2 SRN00079SR (SR)

N 03668 - WELL 7
Ground Water (GW)

WELL 7 SRN03668SR (SR)

N 04425 - WELL 1R
Ground Water (GW)

WELL 1R SRN04425SR (SR)

N 00080 - WELL 3
Ground Water (GW)

WELL 3 SRN00080SR (SR)

N 00081 - WELL 4
Ground Water (GW)

WELL 4 SRN00081SR (SR)

N 00083 - WELL 6
Ground Water (GW)

WELL 6 SRN00083SR (SR)

N 07298 - WELL 8
Ground Water (GW)

WELL 8 SRN07298SR (SR)

N 08264 - WELL 9
Ground Water (GW)

WELL 9 SRN08264SR (SR)

N 00082 - WELL 5
Ground Water (GW)

WELL 5 SRN00082SR (SR)

FAQ

Is Village of Hempstead tap water safe to drink?

When was Village of Hempstead last tested for water contamination?

The latest water samples were taken on July 30th, 2024.