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Shrewsbury Water Department

EPA monitoring tested this supplier for 103 contaminants and detected 26. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

103
contaminants tested
26
detected
38,325
people served
6
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.

6
health-based violations
17
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2013-06-01 → 2013-06-30
MCL Health-based Resolved 2013-06-01 → 2013-06-30
MCL Health-based Resolved 2004-01-01 → 2004-12-31
MCL Health-based Resolved 2004-01-01 → 2004-12-31
MCL Health-based Resolved 2003-10-01 → 2004-09-30
MCL Health-based Resolved 2003-10-01 → 2004-09-30
MR Monitoring Archived 2025-10-01 → 2025-12-31
MR Monitoring Archived 2025-10-01 → 2025-12-31
MR Monitoring Resolved 2019-04-01 → 2019-06-30
MR Monitoring Resolved 2019-04-01 → 2019-06-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0043 µg/L 2/2 2024
Pfhxa 0.0031 µg/L 1/2 2024
PFOA 0.0054 µg/L 1/2 2024
PFOS 0.0056 µg/L 1/2 2024
Pfpea 0.0048 µg/L 1/2 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
Nitrate
1563.5 µg/L 16%
of the EPA limit 10000 µg/L
worst single sample: 2680 µg/L
120/120 SYR4 2012–2019
TTHM
9.4955 µg/L 12%
of the EPA limit 80 µg/L
worst single sample: 16.1 µg/L
38/41 SYR4 2012–2019
Bromoform
4.425 µg/L
No EPA limit set
worst single sample: 6.23 µg/L
36/39 SYR4 2012–2019
Barium
59.6 µg/L 3%
of the EPA limit 2000 µg/L
worst single sample: 66.9 µg/L
33/33 SYR4 2013–2019
Dibromochloromethane
3.2735 µg/L
No EPA limit set
worst single sample: 6.56 µg/L
32/39 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
2.695 µg/L 4.5%
of the EPA limit 60 µg/L
worst single sample: 3 µg/L
22/41 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 21/21 LCR 2025
Trichloroethylene
4.369 µg/L 87%
of the EPA limit 5 µg/L
worst single sample: 4.99 µg/L
19/91 SYR4 2012–2019
Dibromoacetic Acid
2.43 µg/L
No EPA limit set
worst single sample: 2.6 µg/L
18/39 SYR4 2012–2019
Chromium
22.42 µg/L 22%
of the EPA limit 100 µg/L
worst single sample: 36.1 µg/L
17/33 SYR4 2013–2019
Tetrachloroethylene
3.6 µg/L 72%
of the EPA limit 5 µg/L
worst single sample: 3.7 µg/L
11/107 SYR4 2012–2019
Bromodichloromethane
2.395 µg/L
No EPA limit set
worst single sample: 2.55 µg/L
6/39 SYR4 2012–2019
Monochloroacetic Acid
2.025 µg/L
No EPA limit set
worst single sample: 2.1 µg/L
6/39 SYR4 2012–2019
Fluoride
708.8 µg/L 18%
of the EPA limit 4000 µg/L
worst single sample: 710 µg/L
5/33 SYR4 2013–2019
Arsenic
4.835 µg/L 48%
of the EPA limit 10 µg/L
worst single sample: 5 µg/L
2/34 SYR4 2013–2019
Nitrite
19.6 µg/L 2%
of the EPA limit 1000 µg/L
worst single sample: 20 µg/L
2/19 SYR4 2014–2019
Copper
52 µg/L 4%
of the EPA limit 1300 µg/L
 1/1 SYR4 2014
Chloroform
0.7400 µg/L
No EPA limit set
 1/39 SYR4 2012–2019
Picloram
1.9 µg/L 0.4%
of the EPA limit 500 µg/L
 1/19 SYR4 2013–2019
Trichloroacetic Acid
0.6100 µg/L
No EPA limit set
 1/39 SYR4 2012–2019
cis-1,2-Dichloroethylene
0.5500 µg/L 0.8%
of the EPA limit 70 µg/L
 1/91 SYR4 2012–2019
77 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolSeleniumSimazineStyreneThallium, TotalTolueneToxapheneVinyl ChlorideXylenes, TotalLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
TIMOTHY J MARONEY
Phone
5088418506
Email
[email protected]

Frequently asked questions about Shrewsbury Water Department

Is Shrewsbury Water Department tap water safe to drink?

EPA monitoring detected 26 contaminants in Shrewsbury 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 Shrewsbury Water Department's water?

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

How many people does Shrewsbury Water Department serve?

Shrewsbury Water Department reports serving 38,325 people in Massachusetts, per its EPA record.

Has Shrewsbury Water Department had any water quality violations?

The EPA has 17 violations on file for Shrewsbury Water Department, of which 6 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.