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Tap water quality report

Mattapoisett Water Department

EPA monitoring tested this supplier for 92 contaminants and detected 2. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

92
contaminants tested
2
detected
7,685
people served
12
health-based violations
Massachusetts rankingsLead in MassachusettsPFAS in Massachusetts
Water source
Ground water
Ownership
Local government
Counties served
Plymouth

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.

12
health-based violations
13
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2015-11-01 → 2015-11-30
MCL Health-based Resolved 2015-11-01 → 2015-11-30
MCL Health-based Resolved 2014-09-01 → 2014-09-30
MCL Health-based Resolved 2014-09-01 → 2014-09-30
MCL Health-based Resolved 2013-06-01 → 2013-06-30
MCL Health-based Resolved 2013-06-01 → 2013-06-30
MCL Health-based Resolved 1997-01-01 → 1997-01-31
MCL Health-based Resolved 1995-09-01 → 1995-09-30
MCL Health-based Resolved 1995-08-01 → 1995-08-31
MCL Health-based Resolved 1995-06-01 → 1995-06-30

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
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Copper
53 µg/L 4.1%
of the EPA limit 1300 µg/L
worst single sample: 60 µg/L
8/18 SYR4 2012–2019
90 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, TotalArsenicAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneFluorideHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitrateNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HENRI H RENAULD
Phone
5087584161
Email
[email protected]

Frequently asked questions about Mattapoisett Water Department

Is Mattapoisett Water Department tap water safe to drink?

EPA monitoring detected 2 contaminants in Mattapoisett 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 Mattapoisett Water Department's water?

EPA monitoring detected Lead, Copper. The full list with the level and data source for each is above.

How many people does Mattapoisett Water Department serve?

Mattapoisett Water Department reports serving 7,685 people in Massachusetts, per its EPA record.

Has Mattapoisett Water Department had any water quality violations?

The EPA has 13 violations on file for Mattapoisett Water Department, of which 12 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.