Community water systems across the US: what EPA records show

• PFOA or PFOS averaged above 4.0 ppt
• Lead above the 15 ppb action level
• Health-standard violation
• More than one of these results
• None of these results in EPA records
• No data
• Dashed outline: boundary is a modeled estimate

• Illustrative estimate: city limits. Drawn by ScoreYourWater.com from Census city boundaries, for a city's own water system that has no service-area boundary we can show. It isn't a utility map.
• Several water systems placed at the same center: one marker, with a list.
• Illustrative location marker, sized by people served. Placed at the center of the city or county the system serves; it doesn't show the area the system serves.
• Your water bill names your utility.
• Illustrative estimates are shown for 14,584 water systems without a boundary we can show.

No boundary shown: EPA's data has no service-area boundary for the system, or the boundary's source doesn't allow us to show it.

Service areas are from EPA's community water system boundary data. Some are modeled estimates, not utility maps; your water bill names your utility. About 16% of people live in areas whose boundary EPA modeled.

Service-area boundaries: EPA Community Water System Service Area Boundaries (v3), including data provided by states and utilities. License and credits · Report an error