Moderate-low record-based concern — Population-weighted indicator 82/100
State Overview
Water quality across Rhode Island receives an overall grade of B (Moderate-low record-based concern) with an average score of 82 out of 100, based on EPA compliance data from 57 ZIP codes statewide. This places Rhode Island 7 points above the national average of 75, indicating relatively strong water quality management across the state. Approximately 9% of ZIP codes (5 areas) receive a D or F grade, indicating communities with notable water quality concerns that warrant attention. The lowest-scoring area is ZIP code 02808 (Bradford) with a score of 40/100. Scores are calculated from EPA Safe Drinking Water Information System (SDWIS) violation records, lead and copper testing results, PFAS monitoring data from UCMR5, and enforcement actions over the past 5 years.
Lowest Scoring ZIP Codes