← Massachusetts

Tap water quality report

Worcester Dpwp, Water Supply Division

EPA monitoring tested this supplier for 102 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

102
contaminants tested
19
detected
206,518
people served
4
health-based violations
Water source
Surface 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.

4
health-based violations
29
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1995-08-01 → 1995-08-31
TT Health-based Resolved 1993-01-01
TT Health-based Resolved 1993-01-01
TT Health-based Resolved 1992-01-01 → 1996-11-29
Other Monitoring Resolved 2006-01-12
Other Monitoring Resolved 2006-01-12
Other Monitoring Resolved 2005-07-12
Other Monitoring Resolved 2005-07-12
Other Monitoring Resolved 2005-07-01
Other Monitoring Resolved 2005-07-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfpea 0.0032 µg/L 1/4 2024

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
Total Haloacetic Acids (HAA5)
51.36 µg/L 86%
of the EPA limit 60 µg/L
worst single sample: 66 µg/L
253/254 SYR4 2012–2019
TTHM
77.45 µg/L 97%
of the EPA limit 80 µg/L
worst single sample: 104.2 µg/L
250/250 SYR4 2012–2019
Dichloroacetic Acid
18.565 µg/L
No EPA limit set
worst single sample: 23.9 µg/L
110/110 SYR4 2015–2019
Trichloroacetic Acid
24.54 µg/L
No EPA limit set
worst single sample: 30 µg/L
110/110 SYR4 2015–2019
Monochloroacetic Acid
4 µg/L
No EPA limit set
worst single sample: 5.5 µg/L
82/106 SYR4 2015–2019
Bromodichloromethane
15.18 µg/L
No EPA limit set
worst single sample: 17.7 µg/L
39/39 SYR4 2015–2019
Chloroform
72.27 µg/L
No EPA limit set
worst single sample: 82.5 µg/L
39/39 SYR4 2015–2019
Dibromochloromethane
4.04 µg/L
No EPA limit set
worst single sample: 6.8 µg/L
39/39 SYR4 2015–2019
Monobromoacetic Acid
1.92 µg/L
No EPA limit set
worst single sample: 2.8 µg/L
25/102 SYR4 2015–2018
Dibromoacetic Acid
0.7940 µg/L
No EPA limit set
worst single sample: 0.8300 µg/L
24/102 SYR4 2015–2018
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
17/17 LCR 2024
Nitrate
284 µg/L 2.8%
of the EPA limit 10000 µg/L
12/16 SYR4 2012–2019
Barium
13.65 µg/L 0.7%
of the EPA limit 2000 µg/L
worst single sample: 14 µg/L
8/8 SYR4 2012–2019
Fluoride
68.8 µg/L 1.7%
of the EPA limit 4000 µg/L
worst single sample: 70 µg/L
2/8 SYR4 2012–2019
Chlorobenzene
1.9 µg/L 1.9%
of the EPA limit 100 µg/L
1/12 SYR4 2012–2019
Dichloromethane
2.2 µg/L 44%
of the EPA limit 5 µg/L
1/12 SYR4 2012–2019
O-Dichlorobenzene
0.6000 µg/L 0.1%
of the EPA limit 600 µg/L
1/12 SYR4 2012–2019
P-Dichlorobenzene
0.7000 µg/L 0.9%
of the EPA limit 75 µg/L
1/12 SYR4 2012–2019
83 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, TotalBromateBromoformCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumtrans-1,2-Dichloroethylene

Utility contact

Contact
JONATHAN P GERVAIS
Phone
5089291300
Email
[email protected]

Frequently asked questions about Worcester Dpwp, Water Supply Division

Is Worcester Dpwp, Water Supply Division tap water safe to drink?

EPA monitoring detected 19 contaminants in Worcester Dpwp, Water Supply 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 Worcester Dpwp, Water Supply Division's water?

EPA monitoring detected Total Haloacetic Acids (HAA5), TTHM, Dichloroacetic Acid, Trichloroacetic Acid, Monochloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Worcester Dpwp, Water Supply Division serve?

Worcester Dpwp, Water Supply Division reports serving 206,518 people in Massachusetts, per its EPA record.

Has Worcester Dpwp, Water Supply Division had any water quality violations?

The EPA has 29 violations on file for Worcester Dpwp, Water Supply Division, of which 4 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.