Is Vinalhaven Water District Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: Knox

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.

188

health-based violations

215

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2025-04-01 → 2025-06-30
MCL	Health-based	Resolved	2025-04-01 → 2025-06-30
MCL	Health-based	Resolved	2025-04-01 → 2025-06-30
MCL	Health-based	Resolved	2025-04-01 → 2025-06-30
MCL	Health-based	Resolved	2025-04-01 → 2025-06-30
MCL	Health-based	Resolved	2025-01-01 → 2025-03-31
MCL	Health-based	Resolved	2025-01-01 → 2025-03-31
MCL	Health-based	Resolved	2025-01-01 → 2025-03-31
MCL	Health-based	Resolved	2025-01-01 → 2025-03-31
MCL	Health-based	Resolved	2025-01-01 → 2025-03-31

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
TTHM	90.255 µg/L 113% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 114 µg/L	32/32	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	56.945 µg/L 95% of the EPA limit 60 µg/L worst single sample: 58.4 µg/L	32/32	SYR4	2012–2019
Copper	230 µg/L 18% of the EPA limit 1300 µg/L worst single sample: 320 µg/L	25/28	SYR4	2012–2019
Chloroform	70.1 µg/L No EPA limit set worst single sample: 100 µg/L	23/23	SYR4	2014–2019
Bromodichloromethane	13 µg/L No EPA limit set worst single sample: 15 µg/L	22/22	SYR4	2014–2019
Trichloroacetic Acid	34 µg/L No EPA limit set worst single sample: 45 µg/L	22/22	SYR4	2014–2019
Dichloroacetic Acid	20 µg/L No EPA limit set worst single sample: 22 µg/L	21/22	SYR4	2014–2019
Lead	0.0015 mg/L 10% of the EPA limit 0.0150 mg/L	18/18	LCR	2023
Lead	12.7 µg/L 85% of the EPA limit 15 µg/L worst single sample: 14 µg/L	14/28	SYR4	2012–2019
Dibromochloromethane	1.47 µg/L No EPA limit set worst single sample: 1.5 µg/L	7/22	SYR4	2014–2019
Barium	3.92 µg/L 0.2% of the EPA limit 2000 µg/L worst single sample: 4 µg/L	5/8	SYR4	2012–2019
Antimony, Total	0.5400 µg/L 9% of the EPA limit 6 µg/L	1/8	SYR4	2012–2019
Chromium	1.1 µg/L 1.1% of the EPA limit 100 µg/L	1/8	SYR4	2012–2019
Monochloroacetic Acid	2.1 µg/L No EPA limit set	1/22	SYR4	2014–2019

67 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaArsenicBenzeneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideCombined UraniumDichloromethaneDibromoacetic AcidEthylbenzeneFluorideGross Alpha, Excl. Radon And UHfpo-DaMercuryMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitrateNitrate-NitriteNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: DILLINGHAM, MARY JANE
Phone: 207-294-6940
Email: [email protected]

Frequently asked questions about Vinalhaven Water District

Is Vinalhaven Water District tap water safe to drink?

EPA monitoring detected 14 contaminants in Vinalhaven Water District'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 Vinalhaven Water District's water?

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

How many people does Vinalhaven Water District serve?

Vinalhaven Water District reports serving 1,053 people in Maine, per its EPA record.

Has Vinalhaven Water District had any water quality violations?

The EPA has 215 violations on file for Vinalhaven Water District, of which 188 are health-based (a contaminant limit or required treatment was breached) and 1 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.