Is Weir River Water Tap Water Safe? Quality Report

Water source: Surface 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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	1999-08-01 → 1999-08-31
TT	Health-based	Resolved	1992-01-01 → 1996-06-29
MR	Monitoring	Archived	2021-04-01 → 2021-06-30
MR	Monitoring	Archived	2021-04-01 → 2021-06-30
MR	Monitoring	Archived	2021-04-01 → 2021-06-30
MR	Monitoring	Archived	2021-04-01 → 2021-06-30
MR	Monitoring	Archived	2021-04-01 → 2021-06-30
MR	Monitoring	Archived	2021-04-01 → 2021-06-30
MR	Monitoring	Archived	2021-04-01 → 2021-06-30
MR	Monitoring	Archived	2021-04-01 → 2021-06-30

PFAS detected

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

Contaminant	Max	Detection rate	Period
Pfhxa	0.0060 µg/L	5/8	2025
PFOA	0.0064 µg/L	5/8	2025
Pfpea	0.0043 µg/L	5/8	2025
Pfba	0.0057 µg/L	1/8	2025
PFBS	0.0033 µg/L	1/8	2025

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	88 µg/L 110% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 112.4 µg/L	151/151	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	50.7 µg/L 85% of the EPA limit 60 µg/L worst single sample: 68 µg/L	151/151	SYR4	2012–2019
Bromodichloromethane	21 µg/L No EPA limit set worst single sample: 23.5 µg/L	104/104	SYR4	2014–2019
Chloroform	46 µg/L No EPA limit set worst single sample: 65.7 µg/L	104/104	SYR4	2014–2019
Dibromochloromethane	8.185 µg/L No EPA limit set worst single sample: 9 µg/L	104/104	SYR4	2014–2019
Trichloroacetic Acid	26.37 µg/L No EPA limit set worst single sample: 33 µg/L	104/104	SYR4	2014–2019
Dichloroacetic Acid	16.9 µg/L No EPA limit set worst single sample: 19 µg/L	103/104	SYR4	2014–2019
Dibromoacetic Acid	1.9 µg/L No EPA limit set worst single sample: 2 µg/L	74/104	SYR4	2014–2019
Monobromoacetic Acid	4.61 µg/L No EPA limit set worst single sample: 5.8 µg/L	50/104	SYR4	2014–2019
Copper	553 µg/L 43% of the EPA limit 1300 µg/L worst single sample: 640 µg/L	48/50	SYR4	2014–2016
Monochloroacetic Acid	4.6285 µg/L No EPA limit set worst single sample: 5.06 µg/L	48/104	SYR4	2014–2019
Nitrate	4990 µg/L 50% of the EPA limit 10000 µg/L worst single sample: 5100 µg/L	32/32	SYR4	2012–2019
Lead	0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L	22/22	LCR	2025
Lead	8.4 µg/L 56% of the EPA limit 15 µg/L worst single sample: 12 µg/L	19/46	SYR4	2016
Bromoform	1.04 µg/L No EPA limit set worst single sample: 1.1 µg/L	13/104	SYR4	2014–2019
Barium	94.6 µg/L 4.7% of the EPA limit 2000 µg/L worst single sample: 100 µg/L	10/10	SYR4	2012–2019
Fluoride	1000 µg/L 25% of the EPA limit 4000 µg/L	8/10	SYR4	2012–2019
Nitrite	182.5 µg/L 18% of the EPA limit 1000 µg/L worst single sample: 190 µg/L	6/14	SYR4	2013–2019
Chromium	5.3 µg/L 5.3% of the EPA limit 100 µg/L worst single sample: 5.5 µg/L	2/10	SYR4	2012–2019
Combined Uranium	1.4 µg/L 4.7% of the EPA limit 30 µg/L	2/2	SYR4	2014

79 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: RUSSELL E TIERNEY
Phone: 7818042304
Email: [email protected]

Frequently asked questions about Weir River Water

Is Weir River Water tap water safe to drink?

EPA monitoring detected 25 contaminants in Weir River Water'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 Weir River Water's water?

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

How many people does Weir River Water serve?

Weir River Water reports serving 45,339 people in Massachusetts, per its EPA record.

Has Weir River Water had any water quality violations?

The EPA has 32 violations on file for Weir River Water, of which 2 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.