Check your water system’s federal record.
Use your address for the fastest answer. Search by utility, city, ZIP, or water body when you need a manual match. Or browse water systems by state, county and town.
In 2015, nearly 21 million people relied on community water systems that violated a health-based standard. Source: Allaire, Wu and Lall, PNAS, 2018, from EPA violation data.
More than 67,000 public water systems are now required by federal law to report their lead service line inventory to EPA. Source: EPA service line inventory data, 2025 Q4.
Browse by state
Every state, county and town- Alabama 502 systems
- Alaska 407 systems
- American Samoa 10 systems
- Arizona 921 systems
- Arkansas 664 systems
- California 2,931 systems
- Colorado 1,058 systems
- Connecticut 476 systems
- Delaware 207 systems
- District of Columbia 4 systems
- Florida 1,596 systems
- Georgia 1,742 systems
- Guam 5 systems
- Hawaii 118 systems
- Idaho 777 systems
- Illinois 1,788 systems
- Indiana 770 systems
- Iowa 1,079 systems
- Kansas 859 systems
- Kentucky 375 systems
- Louisiana 911 systems
- Maine 385 systems
- Maryland 463 systems
- Massachusetts 527 systems
- Michigan 1,392 systems
- Minnesota 997 systems
- Mississippi 1,016 systems
- Missouri 1,431 systems
- Montana 848 systems
- Nebraska 593 systems
- Nevada 219 systems
- New Hampshire 706 systems
- New Jersey 555 systems
- New Mexico 660 systems
- New York 2,249 systems
- North Carolina 1,986 systems
- North Dakota 320 systems
- Northern Mariana Islands 36 systems
- Ohio 1,127 systems
- Oklahoma 900 systems
- Oregon 946 systems
- Pennsylvania 1,851 systems
- Puerto Rico 401 systems
- Rhode Island 89 systems
- South Carolina 563 systems
- South Dakota 508 systems
- Tennessee 447 systems
- Texas 4,742 systems
- U.S. Virgin Islands 77 systems
- Utah 521 systems
- Vermont 404 systems
- Virginia 1,059 systems
- Washington 2,377 systems
- West Virginia 417 systems
- Wisconsin 1,050 systems
- Wyoming 327 systems
What this is
EPA publishes every drinking water violation for every public system in the country, but the records are coded for regulators. I built Tap Truth so you can type in an address, find the utility that serves it, and read that record in plain English, including the lead pipe inventory your utility filed.
It shows the federal record and nothing more: it does not test your water, it does not cover private wells, and it does not give your water a grade.
Where the data comes from
- EPA ECHO SDWA Downloads 2026 Q1 release, records through March 2026 Water systems and violations. Federal rules only, not state limits or health advisories.
- EPA service line inventory 2025 Q4 Lead pipe counts each utility filed. Covers the utility's pipes, not the plumbing inside your home.
- EPA Service Area Boundaries Version 2.1, November 2025, via EPIC Matches an address to a system. Not every system has a published boundary.
- Census ZIP-County Crosswalk 2020 Census Used for ZIP and county matching when no boundary covers the address.
- U.S. Census Geocoder Live service Turns an address into a map point. Some new or rural addresses do not geocode.