WaterVerge is a free online resource that helps people explore drinking water quality across the United States. Using data from the EPA’s SDWIS and UCMR 5 databases, the site provides water quality grades and scores for more than 15,383 cities and water systems across all 50 states. Visitors can search by city or ZIP code to review information on lead levels, PFAS, regulatory violations, and other water quality indicators.

The platform offers city and state rankings, interactive maps, PFAS contamination tracking, and detailed guides explaining its data and scoring methodology. WaterVerge’s scores weigh health-based violations, lead and copper levels, PFAS concentrations, and compliance practices. Its resources also highlight water systems with reported contamination concerns and those with stronger reported results, helping users compare local data and understand potential issues. The site presents EPA-based findings and filter recommendations, alongside news, alerts, a glossary, and reports covering contaminants such as HAA5 byproducts and chromium-6. Data is updated quarterly, with the displayed dataset identified as current through March 2026.