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Drinking Water Violations
Unit: violations · Direction: lower is better
Count of reported Safe Drinking Water Act violations across public water systems serving residents in the CBSA. Sourced from EPA SDWIS. A higher count indicates more reported events, not necessarily worse water — enforcement activity and system size both drive the count.
Ranked metros
No metros have ranked values yet — every row is pending data (see below).
Data pending
These metros are in the CBSA universe but do not yet have a ranked value — the upstream connector has not produced data, or the sample size is below the threshold. Rule 5 (graceful status): pending rows remain visible rather than being silently dropped.
- Houston-The Woodlands-Sugar Land · TX pending
- Los Angeles-Long Beach-Anaheim · CA pending
- New York-Newark-Jersey City · NY pending
Methodology & sources
Source: EPA SDWIS
Definition: Count of reported Safe Drinking Water Act violations across public water systems serving residents in the CBSA. Sourced from EPA SDWIS. A higher count indicates more reported events, not necessarily worse water — enforcement activity and system size both drive the count.
Cadence: Quarterly (SDWIS data lag is typically one full quarter).
Compliance ≠ exposure. Regulatory counts indicate reporting activity — not measured health outcomes. See why compliance is not exposure for how to read these numbers.