Rhode Island Water Quality Rankings
35 cities ranked · Data from EPA SDWIS
Rhode Island water quality overview
Rhode Island's drinking water quality is fair overall, with a state average score of 69.1 out of 100 — 5.1 points below the national average of 74.2. The median city score is 75.8, reflecting how water quality is distributed across the state's 35 ranked cities. The state shows a mixed picture: 5 cities earned an A grade while 6 cities received an F. The majority fall in the B–C range. PFAS "forever chemicals" were detected in 20 of 35 cities (57%). Of those, 13 cities exceed the 2024 EPA maximum contaminant levels — a health concern requiring action. 1 city has lead levels exceeding the EPA action level of 15 ppb, typically a sign of aging lead service lines or lead solder in older plumbing. Residents in these areas should use an NSF 53-certified filter. 34 cities have recorded health-based violations with the EPA — meaning contaminant levels exceeded safe limits or required testing was missed. Use the table below to find your city's specific record.
How Rhode Island cities scored
Score distribution by range
State vs national average
Water quality across Rhode Island
Each dot is a city, colored by grade. Size reflects population served. Click any city to view its full report.
Top & bottom cities in Rhode Island
Best 10 cities
All 35 cities in Rhode Island
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Barrington | A | 92.4 | 49K | 38 | Health Unresolved | |
| 2 | Lincoln | A | 90.6 | 22K | 4 | Unresolved | |
| 3 | Cumberland | A- | 87.5 | 98K | 13 | Health Unresolved | |
| 4 | Cumberland | A- | 87.5 | 98K | 13 | Health Unresolved | |
| 5 | East Providence | A- | 86.5 | 48K | 12 | Health Unresolved | |
| 6 | Jamestown | B+ | 84.2 | 3K | 22 | Health Unresolved | |
| 7 | Cranston | B+ | 82.3 | 333K | 11 | Health Unresolved | |
| 8 | Cranston | B+ | 82.3 | 333K | 11 | Health Unresolved | |
| 9 | Cranston | B+ | 82.3 | 333K | 11 | Health Unresolved | |
| 10 | Barrington | B+ | 82.3 | 49K | 44 | Health Unresolved | |
| 11 | Coventry | B+ | 82 | 89K | 8 | Health PFAS Unresolved | |
| 12 | Coventry | B+ | 82 | 89K | 8 | Health PFAS Unresolved | |
| 13 | Coventry | B+ | 81.7 | 117K | 59 | Health PFAS Unresolved | |
| 14 | New Shoreham | B+ | 80.1 | 10K | 77 | Health Unresolved | |
| 15 | Coventry | B | 80 | 89K | 20 | Health PFAS Unresolved | |
| 16 | Middletown | B | 77.2 | 50K | 65 | Health Unresolved | |
| 17 | Middletown | B | 77.2 | 42K | 45 | Health Unresolved | |
| 18 | Cumberland | B | 75.8 | 119K | 43 | Health PFAS Unresolved | |
| 19 | Woonsocket | B- | 73.2 | 46K | 28 | Health PFAS Unresolved | |
| 20 | Cranston | B- | 72.2 | 422K | 19 | Health PFAS Unresolved | |
| 21 | Barrington | B- | 70.9 | 49K | 88 | Health Unresolved | |
| 22 | Coventry | C+ | 69.1 | 164K | 40 | Health PFAS Unresolved | |
| 23 | Smithfield | C+ | 68.5 | 20K | 54 | Health Unresolved | |
| 24 | Coventry | C+ | 66.2 | 90K | 42 | Health PFAS Unresolved | |
| 25 | North Smithfield | C+ | 65.6 | 6K | 36 | Health Unresolved | |
| 26 | Westerly | C | 60.4 | 35K | 70 | Health PFAS Unresolved | |
| 27 | Richmond | C- | 55.7 | 3K | 48 | Health Unresolved | |
| 28 | Narragansett | D+ | 52.4 | 13K | 44 | Health PFAS Unresolved | |
| 29 | Tiverton | D | 46.5 | 15K | 173 | Health Unresolved | |
| 30 | Burrillville | F | 43 | 8K | 179 | Health Unresolved | |
| 31 | Charlestown | F | 43 | 2K | 173 | Health Unresolved | |
| 32 | Middletown | F | 41.8 | 61K | 151 | Health Unresolved | |
| 33 | Coventry | F | 36.1 | 99K | 128 | Health PFAS Unresolved | |
| 34 | South Kingstown | F | 32.5 | 53K | 240 | Health PFAS Unresolved | |
| 35 | Exeter | F | 29 | 1K | 226 | Health Lead Unresolved |