Is Twin Lakes Water Co., Inc. Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Private
Counties served: Westchester

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.

health-based violations

161

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2015-05-01 → 2015-05-31
TT	Health-based	Resolved	2015-05-01 → 2015-05-31
TT	Health-based	Resolved	2015-05-01 → 2015-05-31
TT	Health-based	Resolved	2015-05-01 → 2015-05-31
RPT	Monitoring	Resolved	2024-10-17
MR	Monitoring	Resolved	2012-01-01
MR	Monitoring	Resolved	2012-01-01
MR	Monitoring	Resolved	2012-01-01
MR	Monitoring	Resolved	2012-01-01
MR	Monitoring	Resolved	2011-11-01 → 2011-11-30

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Lead	0.0000013 mg/L 0% of the EPA limit 0.0150 mg/L	19/19	LCR	2024
Nitrate	3220 µg/L 32% of the EPA limit 10000 µg/L	16/16	SYR4	2012–2019
Bromodichloromethane	9.1365 µg/L No EPA limit set worst single sample: 9.34 µg/L	12/12	SYR4	2014–2019
Chloroform	11.57 µg/L No EPA limit set worst single sample: 11.9 µg/L	12/12	SYR4	2014–2019
Dibromochloromethane	4.354 µg/L No EPA limit set worst single sample: 4.64 µg/L	12/12	SYR4	2014–2019
Dichloroacetic Acid	5.969 µg/L No EPA limit set worst single sample: 6.75 µg/L	12/12	SYR4	2014–2019
TTHM	24.2755 µg/L 30% of the EPA limit 80 µg/L worst single sample: 24.6 µg/L	12/12	SYR4	2014–2019
Total Haloacetic Acids (HAA5)	11.2325 µg/L 19% of the EPA limit 60 µg/L worst single sample: 11.26 µg/L	12/12	SYR4	2014–2019
Trichloroacetic Acid	4.0845 µg/L No EPA limit set worst single sample: 4.42 µg/L	12/12	SYR4	2014–2019
Dibromoacetic Acid	2.0645 µg/L No EPA limit set worst single sample: 2.15 µg/L	10/12	SYR4	2014–2019
Bromoform	0.4100 µg/L No EPA limit set	9/12	SYR4	2014–2019
Nitrate-Nitrite	3055.5 µg/L 31% of the EPA limit 10000 µg/L worst single sample: 3220 µg/L	8/8	SYR4	2012–2019
Combined Radium (-226 And -228)	7.69825 pCi/L 154% of the EPA limit, at the 95th percentile of samples — 5 pCi/L worst single sample: 8.568 pCi/L	6/6	SYR4	2014–2017
Combined Uranium	55.4705 µg/L 185% of the EPA limit, at the 95th percentile of samples — 30 µg/L worst single sample: 60.494 µg/L	6/6	SYR4	2014–2017
Barium	64.68 µg/L 3.2% of the EPA limit 2000 µg/L worst single sample: 65.1 µg/L	4/4	SYR4	2013–2018
Chromium	7.866 µg/L 7.9% of the EPA limit 100 µg/L worst single sample: 8.16 µg/L	4/4	SYR4	2013–2018
Cyanide	113.2 µg/L 57% of the EPA limit 200 µg/L worst single sample: 124 µg/L	3/4	SYR4	2013–2018
Copper	39.005 µg/L 3% of the EPA limit 1300 µg/L worst single sample: 40.9 µg/L	2/2	SYR4	2016
Fluoride	120 µg/L 3% of the EPA limit 4000 µg/L	1/4	SYR4	2013–2018
Gross Alpha, Excl. Radon And U	4 pCi/L 27% of the EPA limit 15 pCi/L	1/6	SYR4	2014–2017
Lead	5.2 µg/L 35% of the EPA limit 15 µg/L	1/2	SYR4	2016

56 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: SILVESTRO, LAURA
Phone: 203-943-8908

Frequently asked questions about Twin Lakes Water Co., Inc.

Is Twin Lakes Water Co., Inc. tap water safe to drink?

EPA monitoring detected 21 contaminants in Twin Lakes Water Co., Inc.'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 Twin Lakes Water Co., Inc.'s water?

EPA monitoring detected Lead, Nitrate, Bromodichloromethane, Chloroform, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Twin Lakes Water Co., Inc. serve?

Twin Lakes Water Co., Inc. reports serving 366 people in New York, per its EPA record.

Has Twin Lakes Water Co., Inc. had any water quality violations?

The EPA has 161 violations on file for Twin Lakes Water Co., Inc., of which 4 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.