Is Your Water Utility in Violation? How to Check

Thousands of US water systems violate federal standards. Here's how to find out about yours.

How to Check

The fastest way to check your utility's compliance record is the EPA's ECHO database (Enforcement and Compliance History Online) at echo.epa.gov. Search by your water system name or zip code to see a complete history of violations, enforcement actions, and inspection results. Every public water system in the country is tracked here.

You can also search your city on CheckMyTap, where we compile EPA compliance data alongside actual contaminant levels. Your utility's annual Consumer Confidence Report (CCR), published by July 1 each year, must disclose any violations that occurred during the reporting period -- though the language is often buried in fine print and written to minimize alarm.

For a deeper look, the EPA's SDWIS (Safe Drinking Water Information System) database provides detailed violation records going back decades. You can search by state, county, or specific water system. The data is public, free, and updated quarterly.

Common Violations

Not all violations are created equal. The most common type is a monitoring and reporting violation -- the utility failed to test the water on schedule or failed to submit results to the state. These violations may not mean your water is unsafe, but they do mean nobody was checking. A utility that is not testing is a utility that could be missing real problems.

Maximum Contaminant Level (MCL) violations are more serious. These mean a contaminant was detected above the legal limit. The most common MCL violations involve total coliform bacteria, disinfection byproducts (trihalomethanes and haloacetic acids), nitrate, and arsenic. Lead violations under the Lead and Copper Rule work differently -- they are triggered when more than 10% of sampled homes exceed the 15 ppb action level.

Treatment technique violations mean the utility failed to properly operate its treatment system -- for example, not maintaining adequate disinfection or failing to optimize corrosion control for lead. These are particularly concerning because they indicate systemic operational problems, not a one-time test result. Utilities with repeated treatment technique violations are the ones most likely to experience water quality emergencies.

What It Means

A single monitoring violation on an otherwise clean record is usually not cause for alarm -- it often reflects an administrative lapse, not a health risk. But patterns matter. If your utility has repeated violations, MCL exceedances, or unresolved enforcement actions, that signals a system under stress.

The EPA tracks approximately 150,000 public water systems in the US. In any given year, roughly 10-15% of community water systems have at least one violation. The majority of violating systems are small (serving under 3,300 people) and located in rural areas where staffing and funding are limited. Large metro systems violate less frequently but serve vastly more people when they do.

Important context: a violation means the utility exceeded a legal limit, but legal limits are not the same as health limits. The EPA's Maximum Contaminant Level Goals (MCLGs) -- the levels at which no health effects are expected -- are often set lower than the enforceable MCLs. Lead's MCLG is zero. PFOA and PFOS MCLGs are zero. A utility can be in full compliance and still deliver water with contaminants at levels that health scientists consider concerning.

Take Action

If your utility has violations, your first step is understanding what is actually in your water. Search your city on CheckMyTap for specific contaminant data, then decide whether a point-of-use filter makes sense for your situation. For lead and PFAS violations, an NSF 53 / NSF P473 certified filter or reverse osmosis system provides immediate protection while you wait for your utility to resolve the problem.

You can also take civic action. Attend your water utility's public board meetings, which are required for publicly-owned systems. File a complaint with your state drinking water program if you believe violations are not being addressed. Contact your state representative -- water infrastructure funding is allocated at the state level, and elected officials respond to constituent pressure.

For persistent violators, the EPA maintains a formal complaint process. You can report concerns to the Safe Drinking Water Hotline at 800-426-4791 or through the EPA's online complaint form. In cases where state enforcement has failed, the EPA can step in directly, as it did in Jackson, Mississippi and Flint, Michigan.