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Check Your Water Quality

Enter your ZIP code to see which public water systems serve your area and whether any drinking water violations have been recorded.

How It Works

1

Enter Your ZIP Code

Type your 5-digit ZIP code above. We'll look up all EPA-registered public water systems that serve your area.

2

Review Results

See how many water systems serve your ZIP code, their violation history, and whether any health-based violations have been recorded.

3

Check Details

Click any water system to see its full record — every violation, contaminant, compliance date, and enforcement action from the EPA database.

Frequently Asked Questions

This tool searches the EPA's Safe Drinking Water Information System (SDWIS) for all public water systems registered in your ZIP code. It shows their violation history, including health-based violations where contaminant levels exceeded EPA limits.

A health-based violation means a water system exceeded the EPA's Maximum Contaminant Level (MCL) for a specific substance — such as lead, arsenic, nitrates, or coliform bacteria. These violations indicate a potential risk to drinking water safety.

Some areas rely on private wells rather than public water systems. Private wells are not tracked in the EPA database. You may also try a nearby ZIP code, as water system service areas don't always align exactly with ZIP code boundaries.

No EPA violations on record is a good sign, but it doesn't guarantee water safety. Some contaminants may not be tested for, and violations only reflect issues that were detected and reported. For the most accurate information, request a Consumer Confidence Report from your local water utility.