Is Swansea Water District Tap Water Safe? Quality Report

Water source: Surface 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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	2020-01-01 → 2020-03-31
MCL	Health-based	Archived	2019-10-01 → 2019-12-31
MCL	Health-based	Archived	2019-07-01 → 2019-09-30
MCL	Health-based	Archived	2019-04-01 → 2019-06-30
MCL	Health-based	Archived	2019-01-01 → 2019-03-31
MCL	Health-based	Archived	2018-10-01 → 2018-12-31
MCL	Health-based	Archived	2018-07-01 → 2018-09-30
TT	Health-based	Archived	2017-05-01 → 2017-05-31
MCL	Health-based	Archived	2017-01-01 → 2017-03-31
MCL	Health-based	Archived	2017-01-01 → 2017-03-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
PFBS	0.0035 µg/L	3/12	2024
PFOA	0.0051 µg/L	3/12	2024
Pfba	0.0109 µg/L	2/12	2024
PFHXS	0.0077 µg/L	2/12	2024
Pfpea	0.0049 µg/L	2/12	2024
Pfhxa	0.0040 µg/L	1/12	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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
TTHM	136.25 µg/L 170% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 162 µg/L	116/116	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	50.725 µg/L 85% of the EPA limit 60 µg/L worst single sample: 83.2 µg/L	116/116	SYR4	2012–2019
Bromodichloromethane	21.67 µg/L No EPA limit set worst single sample: 49.1 µg/L	100/100	SYR4	2013–2019
Chloroform	50.925 µg/L No EPA limit set worst single sample: 86 µg/L	100/100	SYR4	2013–2019
Dibromochloromethane	33.045 µg/L No EPA limit set worst single sample: 48.5 µg/L	100/100	SYR4	2013–2019
Trichloroacetic Acid	27.55 µg/L No EPA limit set worst single sample: 38.5 µg/L	91/100	SYR4	2013–2019
Dichloroacetic Acid	19.11 µg/L No EPA limit set worst single sample: 35.6 µg/L	79/100	SYR4	2013–2019
Nitrate	2343 µg/L 23% of the EPA limit 10000 µg/L worst single sample: 3510 µg/L	78/92	SYR4	2012–2019
Bromoform	80.3 µg/L No EPA limit set worst single sample: 92.9 µg/L	69/100	SYR4	2013–2019
Dibromoacetic Acid	13.34 µg/L No EPA limit set worst single sample: 20.9 µg/L	57/100	SYR4	2013–2019
Copper	95 µg/L 7.3% of the EPA limit 1300 µg/L worst single sample: 140 µg/L	27/41	SYR4	2013–2019
Fluoride	1300 µg/L 33% of the EPA limit 4000 µg/L worst single sample: 1370 µg/L	24/27	SYR4	2012–2019
Monochloroacetic Acid	6.395 µg/L No EPA limit set worst single sample: 8.7 µg/L	24/100	SYR4	2013–2019
Monobromoacetic Acid	3.06 µg/L No EPA limit set worst single sample: 3.6 µg/L	19/100	SYR4	2013–2019
Lead	0.0020 mg/L 13% of the EPA limit 0.0150 mg/L	15/15	LCR	2025

82 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, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: JEFFREY H SUTHERLAND
Phone: 5086769097
Email: [email protected]

Frequently asked questions about Swansea Water District

Is Swansea Water District tap water safe to drink?

EPA monitoring detected 21 contaminants in Swansea Water District'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 Swansea Water District's water?

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

How many people does Swansea Water District serve?

Swansea Water District reports serving 17,375 people in Massachusetts, per its EPA record.

Has Swansea Water District had any water quality violations?

The EPA has 19 violations on file for Swansea Water District, of which 15 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.