Is North Smithfield, RI Tap Water Safe? Quality & Contaminants

What was found in North Smithfield's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Copper	35.75 µg/L 2.8% of the EPA limit 1300 µg/L Main supplier: SLATERSVILLE PUBLIC SUPPLY · 3,403 people · 2017 Highest in the city: 5207 µg/L — DOWLING VILLAGE · 2,720 people · 2019	2/2	SYR4
Lead	5.9 µg/L 39% of the EPA limit 15 µg/L Main supplier: SLATERSVILLE PUBLIC SUPPLY · 3,403 people · 2017 Highest in the city: 153.12 µg/L — DOWLING VILLAGE · 2,720 people · 2019	2/2	SYR4
TTHM	66.03 µg/L 83% of the EPA limit 80 µg/L Main supplier: SLATERSVILLE PUBLIC SUPPLY · 3,403 people · 2019	1/2	SYR4
Chloroform	40.44 µg/L No EPA limit set Main supplier: SLATERSVILLE PUBLIC SUPPLY · 3,403 people · 2019	1/2	SYR4
Total Haloacetic Acids (HAA5)	28.685 µg/L 48% of the EPA limit 60 µg/L Main supplier: SLATERSVILLE PUBLIC SUPPLY · 3,403 people · 2019	1/2	SYR4
Trichloroacetic Acid	20.54 µg/L No EPA limit set Main supplier: SLATERSVILLE PUBLIC SUPPLY · 3,403 people · 2019	1/2	SYR4
Bromodichloromethane	16.38 µg/L No EPA limit set Main supplier: SLATERSVILLE PUBLIC SUPPLY · 3,403 people · 2019	1/2	SYR4
Dichloroacetic Acid	13.6 µg/L No EPA limit set Main supplier: SLATERSVILLE PUBLIC SUPPLY · 3,403 people · 2019	1/2	SYR4
Dibromochloromethane	7.66 µg/L No EPA limit set Main supplier: SLATERSVILLE PUBLIC SUPPLY · 3,403 people · 2019	1/2	SYR4
Monochloroacetic Acid	5.58 µg/L No EPA limit set Main supplier: SLATERSVILLE PUBLIC SUPPLY · 3,403 people · 2019	1/2	SYR4
Dibromoacetic Acid	1.66 µg/L No EPA limit set Main supplier: SLATERSVILLE PUBLIC SUPPLY · 3,403 people · 2019	1/2	SYR4
Bromoform	1.27 µg/L No EPA limit set Main supplier: SLATERSVILLE PUBLIC SUPPLY · 3,403 people · 2019	1/2	SYR4
Lead	0.00070 mg/L 4.7% of the EPA limit 0.0150 mg/L Main supplier: SLATERSVILLE PUBLIC SUPPLY · 3,403 people · 2023	2/2	LCR

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 the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving North Smithfield

Supplier	Population served
SLATERSVILLE PUBLIC SUPPLY	3,403
DOWLING VILLAGE	2,720

Frequently asked questions about North Smithfield tap water

Is North Smithfield tap water safe to drink?

EPA testing detected 13 contaminants in the water serving North Smithfield. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve North Smithfield?

2 public water suppliers report drinking-water monitoring for North Smithfield, Rhode Island to the EPA. Each is listed above with its population served.

What contaminants are in North Smithfield's water?

The contaminants EPA monitoring detected in North Smithfield include Copper, Lead, TTHM, Chloroform, Total Haloacetic Acids (HAA5). The full list, with the level at the main supplier and the data source, is in the table above.

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.