State Hub
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
1–25 of 38City of Providence
RI1592024 · 333,142 served
Pawtucket Water Supply Board Veolia-na
RI1592021 · 98,130 served
Kent County Water Authority
RI1559511 · 88,779 served
City of Warwick
RI1615627 · 73,289 served
Bristol County Water Authority
RI1647515 · 49,000 served
City of East Providence
RI1615610 · 47,618 served
Woonsocket Water Division
RI1559518 · 45,828 served
City of Newport
RI1592010 · 42,155 served
Westerly Water Department
RI1559512 · 35,298 served
Town of North Kingstown
RI1559517 · 27,732 served
Veolia Water Wakefield Rhode Island Inc
RI1615624 · 22,347 served
Lincoln Water Commission
RI1858423 · 21,664 served
Town of Cumberland
RI1647530 · 21,235 served
University of Rhode Island
RI1858422 · 19,354 served
Portsmouth Water & Fire District
RI1592022 · 17,090 served
Cne - New London Turnpike Entry Point
RI2980453 · 9,999 served
Block Island Water Company
RI1858430 · 9,999 served
Greenville Water District
RI1858410 · 9,500 served
Smithfield Water Supply Board
RI1615616 · 9,460 served
North Tiverton Fire District
RI1592018 · 8,969 served
Narragansett Water System-point Judith
RI1858428 · 8,210 served
Naval Station, Newport
RI1000016 · 7,870 served
South Kingstown-south Shore
RI1615623 · 6,170 served
Clear River Electric and Water District
RI1858411 · 6,000 served
Narragansett Water Dept-north End
RI1858429 · 4,432 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
Quick Links
Data source: Utility data from EPA SDWIS. 38 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-23