Is Jamestown Water Department Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: Newport

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

100

violations on file

still open

Violation	Type	Status	Period
MRDL	Health-based	Resolved	2016-05-01 → 2016-05-31
MRDL	Health-based	Resolved	2016-05-01 → 2016-05-31
MRDL	Health-based	Resolved	2016-05-01 → 2016-05-31
MRDL	Health-based	Resolved	2016-05-01 → 2016-05-31
MRDL	Health-based	Resolved	2016-05-01 → 2016-05-31
MRDL	Health-based	Resolved	2016-04-01 → 2016-04-30
MRDL	Health-based	Resolved	2016-04-01 → 2016-04-30
MRDL	Health-based	Resolved	2016-04-01 → 2016-04-30
MRDL	Health-based	Resolved	2016-04-01 → 2016-04-30
MRDL	Health-based	Resolved	2016-04-01 → 2016-04-30

PFAS detected

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

Contaminant	Max	Detection rate	Period
Pfba	0.0120 µg/L	1/4	2023

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
Chlorite	244 µg/L 24% of the EPA limit 1000 µg/L worst single sample: 870 µg/L	253/288	SYR4	2012–2019
Nitrate	560 µg/L 5.6% of the EPA limit 10000 µg/L worst single sample: 1020 µg/L	44/44	SYR4	2012–2019
TTHM	70.426 µg/L 88% of the EPA limit 80 µg/L worst single sample: 72 µg/L	32/32	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	37.23 µg/L 62% of the EPA limit 60 µg/L worst single sample: 41.9 µg/L	30/32	SYR4	2012–2019
Lead	0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L	26/26	LCR	2025
Copper	130.9 µg/L 10% of the EPA limit 1300 µg/L worst single sample: 338 µg/L	20/20	SYR4	2016–2019
Barium	14.3 µg/L 0.7% of the EPA limit 2000 µg/L worst single sample: 17 µg/L	19/19	SYR4	2012–2019
Bromodichloromethane	13.155 µg/L No EPA limit set worst single sample: 13.2 µg/L	10/10	SYR4	2017–2019
Chloroform	45.61 µg/L No EPA limit set worst single sample: 46.6 µg/L	10/10	SYR4	2017–2019
Dibromochloromethane	3.075 µg/L No EPA limit set worst single sample: 3.3 µg/L	10/10	SYR4	2017–2019
Dichloroacetic Acid	17.865 µg/L No EPA limit set worst single sample: 18 µg/L	10/10	SYR4	2017–2019
Trichloroacetic Acid	12.115 µg/L No EPA limit set worst single sample: 14.5 µg/L	10/10	SYR4	2017–2019
Lead	3.4 µg/L 23% of the EPA limit 15 µg/L worst single sample: 4 µg/L	7/20	SYR4	2016–2019
Nitrate-Nitrite	728 µg/L 7.3% of the EPA limit 10000 µg/L worst single sample: 810 µg/L	5/5	SYR4	2013–2019
Monochloroacetic Acid	3.695 µg/L No EPA limit set worst single sample: 3.8 µg/L	4/10	SYR4	2017–2019
Arsenic	2 µg/L 20% of the EPA limit 10 µg/L	1/19	SYR4	2012–2019
Chromium	3 µg/L 3% of the EPA limit 100 µg/L	1/19	SYR4	2012–2019
Fluoride	200 µg/L 5% of the EPA limit 4000 µg/L	1/19	SYR4	2012–2019
Lasso	0.1000 µg/L 5% of the EPA limit 2 µg/L	1/6	SYR4	2014–2017
Selenium	3 µg/L 6% of the EPA limit 50 µg/L	1/19	SYR4	2012–2019

86 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: GRAY, MICHAEL
Phone: 401-423-7225
Email: [email protected]

Frequently asked questions about Jamestown Water Department

Is Jamestown Water Department tap water safe to drink?

EPA monitoring detected 21 contaminants in Jamestown 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 Jamestown Water Department's water?

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

How many people does Jamestown Water Department serve?

Jamestown Water Department reports serving 3,348 people in Rhode Island, per its EPA record.

Has Jamestown Water Department had any water quality violations?

The EPA has 100 violations on file for Jamestown Water Department, 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.