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Mount Vernon Water Department

EPA monitoring tested this supplier for 42 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

42
contaminants tested
9
detected
73,893
people served
3
health-based violations
New York rankingsLead in New YorkPFAS in New York
Water source
SWP
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.

3
health-based violations
3
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2015-08-01 → 2015-08-31
MCL Health-based Resolved 2015-08-01 → 2015-08-31
TT Health-based Resolved 1995-01-01 → 1997-12-30

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
5.7045 µg/L
No EPA limit set
worst single sample: 20.7 µg/L
248/248 SYR4 2012–2019
Chloroform
44.13 µg/L
No EPA limit set
worst single sample: 55.3 µg/L
248/248 SYR4 2012–2019
TTHM
49.65 µg/L 62%
of the EPA limit 80 µg/L
worst single sample: 62.4 µg/L
248/248 SYR4 2012–2019
Dichloroacetic Acid
19.77 µg/L
No EPA limit set
worst single sample: 24.9 µg/L
247/248 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
48.41 µg/L 81%
of the EPA limit 60 µg/L
worst single sample: 75.2 µg/L
247/247 SYR4 2012–2019
Trichloroacetic Acid
30.34 µg/L
No EPA limit set
worst single sample: 54.4 µg/L
247/248 SYR4 2012–2019
Lead
0.0071 mg/L 47%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2027
Dibromoacetic Acid
1.114 µg/L
No EPA limit set
worst single sample: 1.12 µg/L
2/248 SYR4 2012–2019
Monochloroacetic Acid
3.597 µg/L
No EPA limit set
worst single sample: 3.67 µg/L
2/248 SYR4 2012–2019
33 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaBromoformDibromochloromethaneHfpo-DaMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaLithium

Utility contact

Contact
PATTERSON HOWARD, SHAWN
Phone
914-665-2360
Email
[email protected]

Frequently asked questions about Mount Vernon Water Department

Is Mount Vernon Water Department tap water safe to drink?

EPA monitoring detected 9 contaminants in Mount Vernon 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 Vernon Water Department's water?

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

How many people does Mount Vernon Water Department serve?

Mount Vernon Water Department reports serving 73,893 people in New York, per its EPA record.

Has Mount Vernon Water Department had any water quality violations?

The EPA has 3 violations on file for Mount Vernon Water Department, 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.