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Tap water quality report

Wannacomet Water Company

EPA monitoring tested this supplier for 92 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

92
contaminants tested
8
detected
27,703
people served
14
health-based violations
Massachusetts rankingsLead in MassachusettsPFAS in Massachusetts
Water source
Ground water
Ownership
Local government
Counties served
Nantucket

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.

14
health-based violations
90
violations on file
2
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2015-05-01 → 2015-05-31
MCL Health-based Resolved 2015-05-01 → 2015-05-31
MCL Health-based Resolved 2012-09-01 → 2012-09-30
MCL Health-based Resolved 2012-09-01 → 2012-09-30
MCL Health-based Resolved 2011-09-01 → 2011-09-30
MCL Health-based Resolved 2011-09-01 → 2011-09-30
MCL Health-based Resolved 2008-03-01 → 2008-03-31
MCL Health-based Resolved 2008-03-01 → 2008-03-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
1240 µg/L 12%
of the EPA limit 10000 µg/L
worst single sample: 1340 µg/L
58/58 SYR4 2012–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2025
Fluoride
185 µg/L 4.6%
of the EPA limit 4000 µg/L
worst single sample: 200 µg/L
6/11 SYR4 2012–2019
Arsenic
2.16 µg/L 22%
of the EPA limit 10 µg/L
worst single sample: 2.2 µg/L
5/11 SYR4 2012–2019
Barium
7.25 µg/L 0.4%
of the EPA limit 2000 µg/L
worst single sample: 8 µg/L
4/11 SYR4 2012–2019
Copper
82 µg/L 6.3%
of the EPA limit 1300 µg/L
 1/4 SYR4 2018
Carbofuran
0.9000 µg/L 2.3%
of the EPA limit 40 µg/L
 1/18 SYR4 2012–2018
Toluene
4.9 µg/L 0.5%
of the EPA limit 1000 µg/L
 1/29 SYR4 2012–2019
84 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MARK J WILLETT
Phone
5082280022
Email
[email protected]

Frequently asked questions about Wannacomet Water Company

Is Wannacomet Water Company tap water safe to drink?

EPA monitoring detected 8 contaminants in Wannacomet Water Company'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 Wannacomet Water Company's water?

EPA monitoring detected Nitrate, Lead, Fluoride, Arsenic, Barium, and others. The full list with the level and data source for each is above.

How many people does Wannacomet Water Company serve?

Wannacomet Water Company reports serving 27,703 people in Massachusetts, per its EPA record.

Has Wannacomet Water Company had any water quality violations?

The EPA has 90 violations on file for Wannacomet Water Company, of which 14 are health-based (a contaminant limit or required treatment was breached) and 2 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.