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Tap water quality report

Smithfield, RI

EPA monitoring detected 18 contaminants across the 4 water suppliers serving Smithfield. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

4
water suppliers
19,699
people served
18
contaminants found
Rhode Island rankings Lead in Rhode Island PFAS in Rhode Island

What was found in 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.

ContaminantLevel vs EPA limitSuppliersSource
Copper
10 µg/L 0.8%
of the EPA limit 1300 µg/L
Main supplier: GREENVILLE WATER DISTRICT · 9,500 people · 2019
Highest in the city: 163.7 µg/L — LAKE FOREST HEALTH AND REHABILITATION · 268 people · 2018
4/4 SYR4
TTHM
71.765 µg/L 90%
of the EPA limit 80 µg/L
Main supplier: GREENVILLE WATER DISTRICT · 9,500 people · 2019
Highest in the city: 93.005 µg/L — SMITHFIELD WATER SUPPLY BOARD · 9,460 people · 2019
3/4 SYR4
Chloroform
44.63 µg/L
No EPA limit set
Main supplier: GREENVILLE WATER DISTRICT · 9,500 people · 2019
Highest in the city: 61.31 µg/L — PROVIDENCE-CITY OF - WHIPPLE · 471 people · 2017
3/4 SYR4
Total Haloacetic Acids (HAA5)
23.98 µg/L 40%
of the EPA limit 60 µg/L
Main supplier: GREENVILLE WATER DISTRICT · 9,500 people · 2019
Highest in the city: 28.3 µg/L — PROVIDENCE-CITY OF - WHIPPLE · 471 people · 2019
4/4 SYR4
Nitrite
27.5 µg/L 2.8%
of the EPA limit 1000 µg/L
Highest in the city: LAKE FOREST HEALTH AND REHABILITATION · 268 people · 2018
1/4 SYR4
Lead
12 µg/L 80%
of the EPA limit 15 µg/L
Main supplier: GREENVILLE WATER DISTRICT · 9,500 people · 2019
Highest in the city: 26.995 µg/L — PROVIDENCE-CITY OF - WHIPPLE · 471 people · 2019
4/4 SYR4
Barium
26 µg/L 1.3%
of the EPA limit 2000 µg/L
Highest in the city: LAKE FOREST HEALTH AND REHABILITATION · 268 people · 2018
1/4 SYR4
Dichloroacetic Acid
22.95 µg/L
No EPA limit set
Highest in the city: PROVIDENCE-CITY OF - WHIPPLE · 471 people · 2017
1/4 SYR4
Monochloroacetic Acid
15 µg/L
No EPA limit set
Highest in the city: LAKE FOREST HEALTH AND REHABILITATION · 268 people · 2018
2/4 SYR4
Combined Radium (-226 And -228)
6.341 pCi/L 127%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
Highest in the city: LAKE FOREST HEALTH AND REHABILITATION · 268 people · 2019
1/4 SYR4
Bromodichloromethane
3.963 µg/L
No EPA limit set
Highest in the city: PROVIDENCE-CITY OF - WHIPPLE · 471 people · 2017
2/4 SYR4
Chromium
2.8 µg/L 2.8%
of the EPA limit 100 µg/L
Highest in the city: LAKE FOREST HEALTH AND REHABILITATION · 268 people · 2018
1/4 SYR4
Toluene
2.2 µg/L 0.2%
of the EPA limit 1000 µg/L
Highest in the city: LAKE FOREST HEALTH AND REHABILITATION · 268 people · 2019
1/4 SYR4
Trichloroacetic Acid
2.0115 µg/L
No EPA limit set
Highest in the city: PROVIDENCE-CITY OF - WHIPPLE · 471 people · 2017
1/4 SYR4
Arsenic
1.8 µg/L 18%
of the EPA limit 10 µg/L
Highest in the city: LAKE FOREST HEALTH AND REHABILITATION · 268 people · 2018
1/4 SYR4
Dibromoacetic Acid
1.5 µg/L
No EPA limit set
Highest in the city: PROVIDENCE-CITY OF - WHIPPLE · 471 people · 2017
2/4 SYR4
Dibromochloromethane
0.7290 µg/L
No EPA limit set
Main supplier: GREENVILLE WATER DISTRICT · 9,500 people · 2019
2/4 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: GREENVILLE WATER DISTRICT · 9,500 people · 2023
Highest in the city: 0.0170 mg/L — LAKE FOREST HEALTH AND REHABILITATION · 268 people · 2025
4/4 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 Smithfield

SupplierPopulation served
GREENVILLE WATER DISTRICT 9,500
SMITHFIELD WATER SUPPLY BOARD 9,460
PROVIDENCE-CITY OF - WHIPPLE 471
LAKE FOREST HEALTH AND REHABILITATION 268

Frequently asked questions about Smithfield tap water

Is Smithfield tap water safe to drink?

EPA testing detected 18 contaminants in the water serving 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 Smithfield?

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

What contaminants are in Smithfield's water?

The contaminants EPA monitoring detected in Smithfield include Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), Nitrite. 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.