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Tap water quality report

Medfield Water Dept.

EPA monitoring tested this supplier for 102 contaminants and detected 22. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

102
contaminants tested
22
detected
12,713
people served
26
health-based violations
Massachusetts rankingsLead in MassachusettsPFAS in Massachusetts
Water source
Ground water
Ownership
Local government
Counties served
Norfolk

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.

26
health-based violations
123
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2018-10-01 → 2018-10-31
MCL Health-based Resolved 2018-10-01 → 2018-10-31
MCL Health-based Resolved 2012-07-01 → 2012-07-31
MCL Health-based Resolved 2012-07-01 → 2012-07-31
MCL Health-based Resolved 2012-01-01 → 2012-01-31
MCL Health-based Resolved 2012-01-01 → 2012-01-31
MCL Health-based Resolved 2011-12-01 → 2011-12-31
MCL Health-based Resolved 2011-12-01 → 2011-12-31
MCL Health-based Resolved 2011-10-01 → 2011-10-31
MCL Health-based Resolved 2011-10-01 → 2011-10-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0046 µg/L 2/6 2024
Pfhxa 0.0050 µg/L 2/6 2024
PFOA 0.0070 µg/L 2/6 2024
PFOS 0.0067 µg/L 2/6 2024
Pfpea 0.0065 µg/L 2/6 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
Tetrachloroethylene
4.93 µg/L 99%
of the EPA limit 5 µg/L
worst single sample: 6 µg/L
68/163 SYR4 2012–2019
Nitrate
3122.5 µg/L 31%
of the EPA limit 10000 µg/L
worst single sample: 3270 µg/L
64/64 SYR4 2012–2019
TTHM
16 µg/L 20%
of the EPA limit 80 µg/L
worst single sample: 17 µg/L
41/42 SYR4 2012–2019
Dibromochloromethane
4.84 µg/L
No EPA limit set
worst single sample: 6.1 µg/L
33/34 SYR4 2012–2019
Bromoform
2.16 µg/L
No EPA limit set
worst single sample: 7.3 µg/L
29/34 SYR4 2012–2019
Bromodichloromethane
5.395 µg/L
No EPA limit set
worst single sample: 6 µg/L
28/34 SYR4 2012–2019
Chloroform
3.4 µg/L
No EPA limit set
worst single sample: 5.3 µg/L
26/34 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
2.695 µg/L 4.5%
of the EPA limit 60 µg/L
worst single sample: 9.4 µg/L
22/42 SYR4 2012–2019
Lead
0.0070 mg/L 47%
of the EPA limit 0.0150 mg/L
 21/21 LCR 2025
Dibromoacetic Acid
1.68 µg/L
No EPA limit set
worst single sample: 1.8 µg/L
13/34 SYR4 2012–2019
Trichloroacetic Acid
1.575 µg/L
No EPA limit set
worst single sample: 1.6 µg/L
6/34 SYR4 2012–2019
Copper
98.5 µg/L 7.6%
of the EPA limit 1300 µg/L
worst single sample: 100 µg/L
4/4 SYR4 2019
Dichloroacetic Acid
1.385 µg/L
No EPA limit set
worst single sample: 1.4 µg/L
2/34 SYR4 2012–2019
Fluoride
119.5 µg/L 3%
of the EPA limit 4000 µg/L
worst single sample: 120 µg/L
2/8 SYR4 2014–2017
Trichloroethylene
0.5000 µg/L 10%
of the EPA limit 5 µg/L
 2/163 SYR4 2012–2019
Dichloromethane
0.5000 µg/L 10%
of the EPA limit 5 µg/L
 1/163 SYR4 2012–2019
Monochloroacetic Acid
8.4 µg/L
No EPA limit set
 1/34 SYR4 2012–2019
80 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-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneToxapheneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MAURICE GOULET
Phone
5089063004
Email
[email protected]

Frequently asked questions about Medfield Water Dept.

Is Medfield Water Dept. tap water safe to drink?

EPA monitoring detected 22 contaminants in Medfield Water Dept.'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 Medfield Water Dept.'s water?

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

How many people does Medfield Water Dept. serve?

Medfield Water Dept. reports serving 12,713 people in Massachusetts, per its EPA record.

Has Medfield Water Dept. had any water quality violations?

The EPA has 123 violations on file for Medfield Water Dept., of which 26 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.