Is Woonsocket Water Division Tap Water Safe? Quality Report

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

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

133

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2019-12-01 → 2019-12-31
TT	Health-based	Resolved	2019-12-01 → 2019-12-31
TT	Health-based	Resolved	2019-12-01 → 2019-12-31
TT	Health-based	Resolved	2019-12-01 → 2019-12-31
TT	Health-based	Resolved	2019-12-01 → 2019-12-31
TT	Health-based	Resolved	1996-07-01 → 1996-07-31
TT	Health-based	Resolved	1996-07-01 → 1996-07-31
TT	Health-based	Resolved	1996-07-01 → 1996-07-31
TT	Health-based	Resolved	1996-07-01 → 1996-07-31
TT	Health-based	Resolved	1996-07-01 → 1996-07-31

PFAS detected

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

Contaminant	Max	Detection rate	Period
Pfpea	0.0075 µg/L	3/4	2023
Pfhxa	0.0050 µg/L	2/4	2023
Pfba	0.0067 µg/L	1/4	2023
Pfhpa	0.0037 µg/L	1/4	2023
PFOA	0.0058 µg/L	1/4	2023

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	67.955 µg/L 85% of the EPA limit 80 µg/L worst single sample: 83.2 µg/L	128/128	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	25.5 µg/L 43% of the EPA limit 60 µg/L worst single sample: 34.9 µg/L	124/128	SYR4	2012–2019
Nitrate	550 µg/L 5.5% of the EPA limit 10000 µg/L worst single sample: 610 µg/L	44/52	SYR4	2012–2019
Bromodichloromethane	19.12 µg/L No EPA limit set worst single sample: 20 µg/L	32/32	SYR4	2017–2019
Copper	48.19 µg/L 3.7% of the EPA limit 1300 µg/L worst single sample: 66.8 µg/L	32/32	SYR4	2017
Chloroform	51.215 µg/L No EPA limit set worst single sample: 57.9 µg/L	32/32	SYR4	2017–2019
Dibromochloromethane	7.2 µg/L No EPA limit set worst single sample: 8.5 µg/L	32/32	SYR4	2017–2019
Dichloroacetic Acid	8.43 µg/L No EPA limit set worst single sample: 10.8 µg/L	32/32	SYR4	2017–2019
Lead	0.0066 mg/L 44% of the EPA limit 0.0150 mg/L	32/32	LCR	2025
Trichloroacetic Acid	18.145 µg/L No EPA limit set worst single sample: 25.7 µg/L	32/32	SYR4	2017–2019
Barium	52.75 µg/L 2.6% of the EPA limit 2000 µg/L worst single sample: 55 µg/L	26/26	SYR4	2012–2019
Lead	4.095 µg/L 27% of the EPA limit 15 µg/L worst single sample: 4.5 µg/L	10/32	SYR4	2017
Di(2-ethylhexyl) Phthalate	1 µg/L 17% of the EPA limit 6 µg/L	8/27	SYR4	2014–2019
Monochloroacetic Acid	4.36 µg/L No EPA limit set worst single sample: 4.5 µg/L	8/32	SYR4	2017–2019
Bromoform	0.6950 µg/L No EPA limit set worst single sample: 0.7000 µg/L	2/32	SYR4	2017–2019
Chromium	1 µg/L 1% of the EPA limit 100 µg/L	2/26	SYR4	2012–2019
Nitrate-Nitrite	210 µg/L 2.1% of the EPA limit 10000 µg/L	2/2	SYR4	2013
Nitrite	20 µg/L 2% of the EPA limit 1000 µg/L	2/28	SYR4	2012–2019
Fluoride	320 µg/L 8% of the EPA limit 4000 µg/L	1/26	SYR4	2012–2019

81 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 TetrachlorideChlordaneCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpsPFHXSPfmbaPfmpaPFNAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: D'AGOSTINO, STEVE
Phone: 401-767-1413
Email: [email protected]

Frequently asked questions about Woonsocket Water Division

Is Woonsocket Water Division tap water safe to drink?

EPA monitoring detected 24 contaminants in Woonsocket Water Division'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 Woonsocket Water Division's water?

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

How many people does Woonsocket Water Division serve?

Woonsocket Water Division reports serving 45,828 people in Rhode Island, per its EPA record.

Has Woonsocket Water Division had any water quality violations?

The EPA has 133 violations on file for Woonsocket Water Division, of which 37 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.