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Tap water quality report

Blackstone Water Department

EPA monitoring tested this supplier for 101 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

101
contaminants tested
16
detected
9,463
people served
16
health-based violations
Massachusetts rankingsLead in MassachusettsPFAS in Massachusetts
Water source
Ground water
Ownership
Local government
Counties served
Worcester

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.

16
health-based violations
117
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2012-11-01 → 2012-11-30
MCL Health-based Resolved 2012-11-01 → 2012-11-30
MCL Health-based Resolved 2010-10-01 → 2010-10-31
MCL Health-based Resolved 2010-10-01 → 2010-10-31
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Archived 2004-06-01 → 2004-06-30
MCL Health-based Resolved 2001-12-01 → 2001-12-31
MCL Health-based Resolved 2001-12-01 → 2001-12-31
MCL Health-based Archived 2001-10-01 → 2001-10-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFOA 0.0057 µg/L 1/2 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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
2100 µg/L 21%
of the EPA limit 10000 µg/L
worst single sample: 2300 µg/L
126/126 SYR4 2012–2019
Barium
258.6 µg/L 13%
of the EPA limit 2000 µg/L
worst single sample: 326 µg/L
28/28 SYR4 2012–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2025
TTHM
22.605 µg/L 28%
of the EPA limit 80 µg/L
worst single sample: 23.1 µg/L
10/10 SYR4 2012–2019
Bromodichloromethane
7.562 µg/L
No EPA limit set
worst single sample: 7.87 µg/L
9/9 SYR4 2012–2019
Chloroform
5.778 µg/L
No EPA limit set
worst single sample: 6.03 µg/L
9/9 SYR4 2012–2019
Dibromochloromethane
8.5 µg/L
No EPA limit set
worst single sample: 8.9 µg/L
9/9 SYR4 2012–2019
Bromoform
6.71 µg/L
No EPA limit set
worst single sample: 7.2 µg/L
8/9 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
3.41 µg/L 5.7%
of the EPA limit 60 µg/L
worst single sample: 3.5 µg/L
7/10 SYR4 2012–2019
Trichloroacetic Acid
0.9850 µg/L
No EPA limit set
worst single sample: 1 µg/L
6/9 SYR4 2012–2019
Dibromoacetic Acid
1.438 µg/L
No EPA limit set
worst single sample: 1.5 µg/L
3/9 SYR4 2012–2019
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
 1/28 SYR4 2012–2018
Dichloroacetic Acid
1 µg/L
No EPA limit set
 1/9 SYR4 2012–2019
Monobromoacetic Acid
0.6200 µg/L
No EPA limit set
 1/9 SYR4 2012–2019
Monochloroacetic Acid
1 µg/L
No EPA limit set
 1/9 SYR4 2012–2019
85 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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneFluorideHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JAMES M SULLIVAN
Phone
5088839331
Email
[email protected]

Frequently asked questions about Blackstone Water Department

Is Blackstone Water Department tap water safe to drink?

EPA monitoring detected 16 contaminants in Blackstone 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 Blackstone Water Department's water?

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

How many people does Blackstone Water Department serve?

Blackstone Water Department reports serving 9,463 people in Massachusetts, per its EPA record.

Has Blackstone Water Department had any water quality violations?

The EPA has 117 violations on file for Blackstone Water Department, of which 16 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.