Is your tap water clean?
Here’s the official record.
Look up EPA violation history for any U.S. public water system. Health-based alerts, open violations, and system details — free, no account required.
Why it matters
Most people never check their water system’s violation history.
A single lookup tells you if your utility has open health-based violations — cases where contaminants exceed federal safety limits. EPA is required to track every violation. We make that record searchable.
Look up your system →Popular lookups
Major city water systems
What we show
Everything EPA tracks about your water system.
Open Violations
Every unresolved EPA violation on record for the water system.
Health-Based Flags
Violations where contaminants exceed federal safety limits — the highest-priority issues.
Major Violation Status
Whether any violations are classified as major by EPA.
Population Served
How many people and service connections the system covers.
Water Source Type
Groundwater, surface water, or purchased — each has different treatment and risk profiles.
System Type
Community, transient, or non-transient non-community — defines who the water serves.
School or Daycare Flag
Whether the system serves a school or daycare, which warrants closer scrutiny.
Return-to-Compliance Dates
When resolved violations were corrected and brought back into compliance.
All 50 States
Every EPA-registered public water system across the U.S.
What does your water system’s record look like?
Search by state and city. Results in seconds. Free, no account required.
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