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Tap water quality report

Plymouth Water Department

EPA monitoring tested this supplier for 104 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

104
contaminants tested
17
detected
47,100
people served
6
health-based violations
Massachusetts rankingsLead in MassachusettsPFAS in Massachusetts
Water source
Ground water
Ownership
Local government
Counties served
Plymouth

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
13
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1998-09-01 → 1998-09-30
MCL Health-based Resolved 1997-12-01 → 1997-12-31
MCL Health-based Resolved 1996-01-01 → 1996-01-31
MCL Health-based Resolved 1995-09-01 → 1995-09-30
MCL Health-based Resolved 1993-10-01 → 1993-10-31
MCL Health-based Archived 1993-09-01 → 1993-09-30
MR Monitoring Resolved 2019-10-01
MR Monitoring Resolved 2019-10-01
MR Monitoring Resolved 2019-10-01
Other Monitoring Resolved 2017-07-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0040 µg/L 1/22 2024
Pfpea 0.0031 µg/L 1/22 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
1975 µg/L 20%
of the EPA limit 10000 µg/L
worst single sample: 2370 µg/L
156/156 SYR4 2012–2019
Tetrachloroethylene
1.734 µg/L 35%
of the EPA limit 5 µg/L
worst single sample: 2.26 µg/L
85/217 SYR4 2012–2019
TTHM
21.025 µg/L 26%
of the EPA limit 80 µg/L
worst single sample: 23.4 µg/L
34/34 SYR4 2012–2019
Copper
105.25 µg/L 8.1%
of the EPA limit 1300 µg/L
worst single sample: 192 µg/L
26/43 SYR4 2016–2019
Barium
51.2 µg/L 2.6%
of the EPA limit 2000 µg/L
worst single sample: 74 µg/L
20/20 SYR4 2014–2017
Bromoform
14.505 µg/L
No EPA limit set
worst single sample: 14.6 µg/L
20/20 SYR4 2015–2019
Chloroform
1.5815 µg/L
No EPA limit set
worst single sample: 1.8 µg/L
20/20 SYR4 2015–2019
Dibromochloromethane
5.258 µg/L
No EPA limit set
worst single sample: 5.79 µg/L
20/20 SYR4 2015–2019
Lead
0.0025 mg/L 17%
of the EPA limit 0.0150 mg/L
 20/20 LCR 2024
Bromodichloromethane
2.366 µg/L
No EPA limit set
worst single sample: 2.6 µg/L
19/20 SYR4 2015–2019
Total Haloacetic Acids (HAA5)
2.9505 µg/L 4.9%
of the EPA limit 60 µg/L
worst single sample: 3.09 µg/L
10/34 SYR4 2012–2019
Dibromoacetic Acid
2.829 µg/L
No EPA limit set
worst single sample: 3.09 µg/L
7/20 SYR4 2015–2019
Lead
14.05 µg/L 94%
of the EPA limit 15 µg/L
worst single sample: 16 µg/L
6/30 SYR4 2016
Trichloroethylene
0.8005 µg/L 16%
of the EPA limit 5 µg/L
worst single sample: 0.8100 µg/L
2/89 SYR4 2012–2019
Dichloroacetic Acid
1 µg/L
No EPA limit set
 1/20 SYR4 2015–2019
87 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-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneFluorideHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneToxapheneTrichloroacetic AcidVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
PETER GORDON
Phone
5088304162
Email
[email protected]

Frequently asked questions about Plymouth Water Department

Is Plymouth Water Department tap water safe to drink?

EPA monitoring detected 17 contaminants in Plymouth 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 Plymouth Water Department's water?

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

How many people does Plymouth Water Department serve?

Plymouth Water Department reports serving 47,100 people in Massachusetts, per its EPA record.

Has Plymouth Water Department had any water quality violations?

The EPA has 13 violations on file for Plymouth 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.