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Tap water quality report

Nyack Village Water Supply

EPA monitoring tested this supplier for 101 contaminants and detected 23. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

101
contaminants tested
23
detected
14,700
people served
3
health-based violations
Water source
Surface water
Ownership
Local government
Counties served
Rockland

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

3
health-based violations
18
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2003-07-01 → 2003-07-31
TT Health-based Resolved 2003-01-01 → 2003-01-31
TT Health-based Resolved 2002-04-01 → 2002-04-30
MR Monitoring Resolved 2022-10-01
MR Monitoring Resolved 2022-10-01
MR Monitoring Resolved 2022-10-01
MR Monitoring Resolved 2022-10-01
Other Monitoring Resolved 2022-07-01
Other Monitoring Resolved 2022-07-01
Other Monitoring Resolved 2022-07-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfhxa 0.0047 µg/L 3/3 2025
PFOA 0.0098 µg/L 3/3 2025
PFOS 0.0052 µg/L 3/3 2025
Pfpea 0.0052 µg/L 3/3 2025
Pfba 0.0051 µg/L 2/3 2025
PFBS 0.0033 µg/L 1/3 2025
Pfhpa 0.0032 µg/L 1/3 2025

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Chloroform
55.3 µg/L
No EPA limit set
worst single sample: 99 µg/L
99/99 SYR4 2012–2019
TTHM
88.63 µg/L 111%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 135.7 µg/L
99/99 SYR4 2012–2019
Bromodichloromethane
25 µg/L
No EPA limit set
worst single sample: 28 µg/L
97/98 SYR4 2012–2019
Dibromochloromethane
8.12 µg/L
No EPA limit set
worst single sample: 12 µg/L
97/98 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
51.2 µg/L 85%
of the EPA limit 60 µg/L
worst single sample: 62 µg/L
97/98 SYR4 2013–2019
Trichloroacetic Acid
22.4 µg/L
No EPA limit set
worst single sample: 37 µg/L
97/98 SYR4 2013–2019
Dichloroacetic Acid
31 µg/L
No EPA limit set
worst single sample: 40 µg/L
96/97 SYR4 2013–2019
Dibromoacetic Acid
1.9 µg/L
No EPA limit set
worst single sample: 34 µg/L
47/98 SYR4 2013–2019
Bromoform
1.3 µg/L
No EPA limit set
34/99 SYR4 2012–2019
Lead
0.0060 mg/L 40%
of the EPA limit 0.0150 mg/L
24/24 LCR 2023
Barium
107 µg/L 5.4%
of the EPA limit 2000 µg/L
worst single sample: 110 µg/L
7/7 SYR4 2013–2019
Nitrate
530 µg/L 5.3%
of the EPA limit 10000 µg/L
4/4 SYR4 2013–2014
Monobromoacetic Acid
6.99 µg/L
No EPA limit set
worst single sample: 7.3 µg/L
2/98 SYR4 2013–2019
Monochloroacetic Acid
1.29 µg/L
No EPA limit set
worst single sample: 1.3 µg/L
2/97 SYR4 2013–2019
Nitrate-Nitrite
430 µg/L 4.3%
of the EPA limit 10000 µg/L
1/2 SYR4 2013–2014
Selenium
2.3 µg/L 4.6%
of the EPA limit 50 µg/L
1/7 SYR4 2013–2019
78 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneFluorideHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpsPFHXSPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
LYNCH, THOMAS
Phone
845-358-3734
Email
[email protected]

Frequently asked questions about Nyack Village Water Supply

Is Nyack Village Water Supply tap water safe to drink?

EPA monitoring detected 23 contaminants in Nyack Village Water Supply's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Nyack Village Water Supply's water?

EPA monitoring detected Chloroform, TTHM, Bromodichloromethane, Dibromochloromethane, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Nyack Village Water Supply serve?

Nyack Village Water Supply reports serving 14,700 people in New York, per its EPA record.

Has Nyack Village Water Supply had any water quality violations?

The EPA has 18 violations on file for Nyack Village Water Supply, of which 3 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.