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Rhode Island Water Quality
38
Utilities in database
1.1M
Residents served
12%
On private wells
2
Key contaminants tracked
Drinking Water in Rhode Island
Rhode Island has 38 community water systems serving approximately 1.1 million residents. Primary water sources include surface water. The most commonly reported contaminants include disinfection byproducts, lead. 12% of Rhode Island residents rely on private wells. DEM holds primary enforcement authority under the Safe Drinking Water Act.
Utilities in Rhode Island
26–38 of 38Kingston Water District
RI1858421 · 3,968 served
Slatersville Public Supply
RI1615614 · 3,403 served
Jamestown Water Department
RI1858419 · 3,348 served
Tiverton Water Authority, Town Hall
RI1900042 · 3,213 served
Stone Bridge Fire District
RI1615619 · 2,793 served
Dowling Village
RI2980476 · 2,720 served
Town of Richmond
RI1000040 · 2,671 served
Warwick-potowomut
RI1900051 · 2,163 served
Prudence Island Water District
RI1592023 · 1,500 served
Scituate High School & Middle School
RI1615612 · 1,426 served
Maplehill Mobile Home Park
RI2973130 · 750 served
South Kingstown-middlebridge
RI1000015 · 694 served
Eleanor Slater Hospital Zambarano Unit
RI1647516 · 540 served
Key Contaminant Concerns in Rhode Island
Lead
Lead is a naturally occurring heavy metal that was widely used in plumbing infrastructure until it was banned for new installations in 1986. An estimated 9.2 million lead service lines still connect homes to public water mains across the United States, along with millions of homes with lead solder in their internal plumbing.
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
Rhode Island Water FAQs
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Data source: Utility data from EPA SDWIS. 38 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-23