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Tap water quality report

Mansfield Water Division

EPA monitoring tested this supplier for 103 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

103
contaminants tested
19
detected
21,797
people served
7
health-based violations
Massachusetts rankingsLead in MassachusettsPFAS in Massachusetts
Water source
Ground water
Ownership
Local government
Counties served
Bristol

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.

7
health-based violations
22
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2009-07-01 → 2009-07-31
MCL Health-based Resolved 2009-07-01 → 2009-07-31
MCL Health-based Archived 1999-12-01 → 1999-12-31
MCL Health-based Archived 1998-09-01 → 1998-09-30
MCL Health-based Resolved 1998-01-01 → 1998-01-31
MCL Health-based Resolved 1997-09-01 → 1997-09-30
MCL Health-based Archived 1994-06-01 → 1994-06-30
MON Monitoring Resolved 2022-09-01 → 2022-09-30
Other Monitoring Resolved 2012-07-01
Other Monitoring Resolved 2012-07-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0038 µg/L 2/6 2025
PFHXS 0.0031 µg/L 1/6 2025
PFOA 0.0043 µg/L 1/6 2025
PFOS 0.0062 µg/L 1/6 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
TTHM
58.9 µg/L 74%
of the EPA limit 80 µg/L
worst single sample: 76.6 µg/L
95/95 SYR4 2012–2019
Bromodichloromethane
15.49 µg/L
No EPA limit set
worst single sample: 18.9 µg/L
92/92 SYR4 2012–2019
Chloroform
41.85 µg/L
No EPA limit set
worst single sample: 50.7 µg/L
92/92 SYR4 2012–2019
Dibromochloromethane
7.535 µg/L
No EPA limit set
worst single sample: 10.5 µg/L
92/92 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
31.65 µg/L 53%
of the EPA limit 60 µg/L
worst single sample: 68 µg/L
90/96 SYR4 2012–2019
Trichloroacetic Acid
20.1 µg/L
No EPA limit set
worst single sample: 40.5 µg/L
79/97 SYR4 2012–2019
Bromoform
2.7 µg/L
No EPA limit set
worst single sample: 4.5 µg/L
65/92 SYR4 2012–2019
Nitrate
2815 µg/L 28%
of the EPA limit 10000 µg/L
worst single sample: 2890 µg/L
62/74 SYR4 2012–2019
Dichloroacetic Acid
13.205 µg/L
No EPA limit set
worst single sample: 24.4 µg/L
54/108 SYR4 2012–2019
Dibromoacetic Acid
2.085 µg/L
No EPA limit set
worst single sample: 2.2 µg/L
44/96 SYR4 2012–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 22/22 LCR 2025
Copper
120 µg/L 9.2%
of the EPA limit 1300 µg/L
 20/35 SYR4 2012–2019
Monochloroacetic Acid
10.15 µg/L
No EPA limit set
worst single sample: 11 µg/L
11/113 SYR4 2012–2019
Fluoride
992 µg/L 25%
of the EPA limit 4000 µg/L
worst single sample: 1040 µg/L
9/11 SYR4 2013–2017
Carbon Tetrachloride
1.3 µg/L 26%
of the EPA limit 5 µg/L
 1/37 SYR4 2012–2019
84 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, TotalArsenicAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SHAWN W PRECOURT
Phone
5082617376
Email
[email protected]

Frequently asked questions about Mansfield Water Division

Is Mansfield Water Division tap water safe to drink?

EPA monitoring detected 19 contaminants in Mansfield 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 Mansfield Water Division's water?

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

How many people does Mansfield Water Division serve?

Mansfield Water Division reports serving 21,797 people in Massachusetts, per its EPA record.

Has Mansfield Water Division had any water quality violations?

The EPA has 22 violations on file for Mansfield Water Division, of which 7 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.