West Virginia, Louisiana and New Mexico ranked highest on Civic Forecast's drinking water violation index, October 2026
West Virginia scores 97: 13.2% of people served are on a community water system with a health-based violation in three years, and 368 per 1,000 systems are serious violators. It averages each state's percentile rank on those two EPA measures across the 50 states scored (of 51): a rank, not a level. Civic Forecast index from state-reported EPA SDWIS data via ECHO, file of October 2026.
Induced by API Automations for Civic Forecast from federal open data. Each finding names the datasets it was computed from. How this is calculated.