Water quality by location
Water quality by state
Drinking-water quality for 21,455 public water systems, from EPA records — the contaminants found, PFAS monitoring, and the certified filters that remove them. Pick your state, then your city.
Know your ZIP? Skip straight to your water system's full report.
Check my water by ZIP → Alabama 344 Alaska 339 American Samoa 6 AP 1 Arizona 517 Arkansas 379 California 1,285 Colorado 509 Connecticut 391 Delaware 36 District of Columbia 12 Florida 1,015 Georgia 363 Guam 4 Hawaii 47 Idaho 229 Illinois 837 Indiana 322 Iowa 281 Kansas 173 Kentucky 292 Louisiana 616 Maine 129 Maryland 75 Massachusetts 278 MB 1 Michigan 587 Minnesota 378 Mississippi 405 Missouri 559 Montana 219 Nebraska 177 Nevada 141 New Hampshire 180 New Jersey 422 New Mexico 413 New York 472 North Carolina 711 North Dakota 57 Northern Mariana Islands 19 Ohio 677 Oklahoma 672 Oregon 538 Pennsylvania 1,388 Puerto Rico 282 Rhode Island 53 South Carolina 259 South Dakota 191 Tennessee 321 Texas 1,898 U.S. Virgin Islands 4 Utah 298 Vermont 129 Virginia 289 Washington 563 West Virginia 295 Wisconsin 293 Wyoming 84