Is Mount Kisco Water Department Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
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

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2024-11-01 → 2024-11-30
TT	Health-based	Resolved	2024-11-01 → 2024-11-30
TT	Health-based	Resolved	2024-11-01 → 2024-11-30
TT	Health-based	Resolved	2024-11-01 → 2024-11-30
MCL	Health-based	Resolved	2016-03-01 → 2016-03-31
MCL	Health-based	Resolved	2016-03-01 → 2016-03-31
MCL	Health-based	Resolved	2016-03-01 → 2016-03-31
MCL	Health-based	Resolved	2016-03-01 → 2016-03-31
MCL	Health-based	Resolved	2015-12-01 → 2015-12-31
MCL	Health-based	Resolved	2015-12-01 → 2015-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
Pfpea	0.0031 µg/L	1/6	2024

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
Bromodichloromethane	11.055 µg/L No EPA limit set worst single sample: 12.6 µg/L	64/64	SYR4	2012–2019
Chloroform	49.62 µg/L No EPA limit set worst single sample: 56.3 µg/L	64/64	SYR4	2012–2019
Dibromochloromethane	2.813 µg/L No EPA limit set worst single sample: 8.66 µg/L	64/64	SYR4	2012–2019
TTHM	62.3 µg/L 78% of the EPA limit 80 µg/L worst single sample: 71.1 µg/L	64/64	SYR4	2012–2019
Dichloroacetic Acid	17.79 µg/L No EPA limit set worst single sample: 29.1 µg/L	63/64	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	45.28 µg/L 75% of the EPA limit 60 µg/L worst single sample: 51.1 µg/L	63/64	SYR4	2012–2019
Trichloroacetic Acid	26.62 µg/L No EPA limit set worst single sample: 30.1 µg/L	63/64	SYR4	2012–2019
Lead	0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L	24/24	LCR	2025
Monochloroacetic Acid	3.869 µg/L No EPA limit set worst single sample: 4.77 µg/L	18/64	SYR4	2012–2019
Barium	150 µg/L 7.5% of the EPA limit 2000 µg/L	16/16	SYR4	2012–2019
Combined Radium (-226 And -228)	3.584 pCi/L 72% of the EPA limit 5 pCi/L worst single sample: 3.71 pCi/L	7/7	SYR4	2014–2018
Combined Uranium	3.10367 µg/L 10% of the EPA limit 30 µg/L worst single sample: 3.6356 µg/L	7/7	SYR4	2014–2018
Gross Alpha, Excl. Radon And U	3.452 pCi/L 23% of the EPA limit 15 pCi/L worst single sample: 3.53 pCi/L	7/7	SYR4	2014–2018
Bromoform	0.6125 µg/L No EPA limit set worst single sample: 0.6200 µg/L	2/64	SYR4	2012–2019
Fluoride	549.55 µg/L 14% of the EPA limit 4000 µg/L worst single sample: 570 µg/L	2/16	SYR4	2012–2019
Lithium	13.6 µg/L No EPA limit set	2/6	UCMR-5	2024
Chromium	1.6 µg/L 1.6% of the EPA limit 100 µg/L	1/16	SYR4	2012–2019
Di(2-ethylhexyl) Phthalate	1.1 µg/L 18% of the EPA limit 6 µg/L	1/39	SYR4	2012–2019

86 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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitrateNitrate-NitriteNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: BRANCATI, EDWARD W.
Phone: 914-864-0033
Email: ebrancati@mountkisco.org

Frequently asked questions about Mount Kisco Water Department

Is Mount Kisco Water Department tap water safe to drink?

EPA monitoring detected 19 contaminants in Mount Kisco Water Department'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 Mount Kisco Water Department's water?

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

How many people does Mount Kisco Water Department serve?

Mount Kisco Water Department reports serving 11,187 people in New York, per its EPA record.

Has Mount Kisco Water Department had any water quality violations?

The EPA has 41 violations on file for Mount Kisco Water Department, of which 22 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.