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Tap water quality report

Centerville Osterville Marstons Mills Wd

EPA monitoring tested this supplier for 91 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

91
contaminants tested
11
detected
50,000
people served
3
health-based violations
Massachusetts rankingsLead in MassachusettsPFAS in Massachusetts
Water source
Ground water
Ownership
Local government
Counties served
Barnstable

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.

3
health-based violations
27
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2013-09-01 → 2013-09-30
MCL Health-based Resolved 2013-09-01 → 2013-09-30
MCL Health-based Resolved 1998-01-01 → 1998-01-31
MR Monitoring Archived 2024-04-01 → 2024-06-30
MR Monitoring Archived 1996-07-01 → 1996-09-30
MR Monitoring Archived 1996-07-01 → 1996-09-30
MR Monitoring Archived 1996-07-01 → 1996-09-30
MR Monitoring Archived 1996-07-01 → 1996-09-30
MR Monitoring Archived 1996-07-01 → 1996-09-30
MR Monitoring Archived 1996-07-01 → 1996-09-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfhxa 0.0069 µg/L 7/30 2025
Pfpea 0.0075 µg/L 7/30 2025
PFBS 0.0040 µg/L 3/30 2025
PFOA 0.0049 µg/L 3/30 2025
PFHXS 0.0031 µg/L 2/30 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
Nitrate
4940 µg/L 49%
of the EPA limit 10000 µg/L
worst single sample: 6000 µg/L
330/342 SYR4 2012–2019
Copper
27.25 µg/L 2.1%
of the EPA limit 1300 µg/L
worst single sample: 40 µg/L
26/30 SYR4 2013–2017
Lead
0.0024 mg/L 16%
of the EPA limit 0.0150 mg/L
 21/21 LCR 2025
Barium
69.3 µg/L 3.5%
of the EPA limit 2000 µg/L
worst single sample: 70 µg/L
8/8 SYR4 2014–2017
Fluoride
100 µg/L 2.5%
of the EPA limit 4000 µg/L
 2/8 SYR4 2014–2017
Nitrite
440 µg/L 44%
of the EPA limit 1000 µg/L
 1/39 SYR4 2014–2017
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-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CRAIG A CROCKER
Phone
5084286691
Email
[email protected]

Frequently asked questions about Centerville Osterville Marstons Mills Wd

Is Centerville Osterville Marstons Mills Wd tap water safe to drink?

EPA monitoring detected 11 contaminants in Centerville Osterville Marstons Mills Wd'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 Centerville Osterville Marstons Mills Wd's water?

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

How many people does Centerville Osterville Marstons Mills Wd serve?

Centerville Osterville Marstons Mills Wd reports serving 50,000 people in Massachusetts, per its EPA record.

Has Centerville Osterville Marstons Mills Wd had any water quality violations?

The EPA has 27 violations on file for Centerville Osterville Marstons Mills Wd, of which 3 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.