Tap WaterIndex

← New York

Tap water quality report

Sullivan Hollow

EPA monitoring tested this supplier for 69 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
10
detected
64
people served
2
health-based violations
New York rankingsLead in New YorkPFAS in New York
Water source
Ground water
Ownership
Native American

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.

2
health-based violations
68
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2023-07-13
TT Health-based Resolved 2023-07-13
MON Monitoring Resolved 2025-09-01 → 2025-09-30
MR Monitoring Resolved 2025-07-01 → 2025-09-30
MON Monitoring Resolved 2025-07-01 → 2025-07-31
MON Monitoring Resolved 2025-04-01 → 2025-04-30
MON Monitoring Resolved 2025-02-01 → 2025-02-28
MR Monitoring Resolved 2025-01-01 → 2025-03-31
RPT Monitoring Resolved 2025-01-01
RPT Monitoring Resolved 2024-11-01

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.00060 mg/L 4%
of the EPA limit 0.0150 mg/L
 4/4 LCR 2025
Barium
127 µg/L 6.4%
of the EPA limit 2000 µg/L
 2/2 SYR4 2015–2018
Combined Radium (-226 And -228)
0.5960 pCi/L 12%
of the EPA limit 5 pCi/L
 2/3 SYR4 2013–2018
Combined Uranium
0.2410 µg/L 0.8%
of the EPA limit 30 µg/L
 2/2 SYR4 2013–2015
Fluoride
210 µg/L 5.3%
of the EPA limit 4000 µg/L
 2/2 SYR4 2015–2019
Gross Alpha, Excl. Radon And U
0.8908 pCi/L 5.9%
of the EPA limit 15 pCi/L
 2/3 SYR4 2013–2018
Nitrate
50 µg/L 0.5%
of the EPA limit 10000 µg/L
 2/6 SYR4 2017–2019
Cyanide
5 µg/L 2.5%
of the EPA limit 200 µg/L
 1/2 SYR4 2015–2019
Mercury
0.2000 µg/L 10%
of the EPA limit 2 µg/L
 1/2 SYR4 2015–2018
TTHM
2 µg/L 2.5%
of the EPA limit 80 µg/L
 1/4 SYR4 2017–2019
59 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Theresa Lay

Frequently asked questions about Sullivan Hollow

Is Sullivan Hollow tap water safe to drink?

EPA monitoring detected 10 contaminants in Sullivan Hollow'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 Sullivan Hollow's water?

EPA monitoring detected Lead, Barium, Combined Radium (-226 And -228), Combined Uranium, Fluoride, and others. The full list with the level and data source for each is above.

How many people does Sullivan Hollow serve?

Sullivan Hollow reports serving 64 people in New York, per its EPA record.

Has Sullivan Hollow had any water quality violations?

The EPA has 68 violations on file for Sullivan Hollow, of which 2 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.