Public Water Systems
143,076 active public water systems, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Owatonna | Owatonna, MN | 26,430 | 7 | Clean |
| Williston City Of | Williston, ND | 26,426 | 42 | Clean |
| HI Desert WD | Yucca Valley, CA | 26,411 | 17 | Detected |
| Mountlake Terrace City Of | Mountlake Terrace, WA | 26,402 | 12 | Clean |
| Porter Special Utility District | Porter, TX | 26,388 | 44 | Clean |
| Liberty Utilities - Compton | Downey, CA | 26,371 | 7 | Clean |
| East Chicago Water Works | East Chicago, IN | 26,370 | 148 | Clean |
| City of Sanger | Sanger, CA | 26,357 | 18 | Detected |
| Lexington Water Systems | Lexington, TN | 26,322 | 159 | Clean |
| Troy City PWS | Rossburg, OH | 26,305 | 5 | Clean |
| Murray Water System | Murray, KY | 26,302 | 401 | Clean |
| City of Alvin | Alvin, TX | 26,244 | 16 | Clean |
| Gswc-South San Gabriel | San Dimas, CA | 26,240 | 1 | Detected |
| Chicago Heights | Chicago Heights, IL | 26,184 | 40 | Clean |
| Monroe Municipal Utilities Authority | Williamstown, NJ | 26,179 | 818 | Detected |
| Austin Utilities | Austin, MN | 26,174 | 4 | Clean |
| City of Ocean Springs | Ocean Springs, MS | 26,168 | 1,403 | Clean |
| Norfolk, City Of | Norfolk, NE | 26,147 | 7 | Clean |
| East Central Sud | Adkins, TX | 26,137 | 66 | Clean |
| Big Bear Lake Dwp - Big Bear System | Big Bear Lake, CA | 26,132 | 3 | Detected |
| Holland Township Consolidated | Holland, MI | 26,100 | 0 | Clean |
| Batavia | Batavia, IL | 26,098 | 289 | Clean |
| San Lorenzo Urbano | San Lorenzo, PR | 26,094 | 260 | Clean |
| Superior Water Light & Power Company | Superior, WI | 26,084 | 30 | Clean |
| South River Sanitary District | Verona, VA | 26,083 | 32 | Clean |
| Dcws Ashley Phosphate (Sc1820008) | Summerville, SC | 26,076 | 11 | Detected |
| Reedley, City Of | Reedley, CA | 26,076 | 26 | Clean |
| Franklin County Water & Sewer | Youngsville, NC | 26,060 | 84 | - |
| City of Colleyville | Colleyville, TX | 26,057 | 13 | Detected |
| Epcor - Chaparral City | El Mirage, AZ | 26,026 | 492 | Clean |
| Odenville, the Util Board of the Town Of | Odenville, AL | 26,022 | 163 | Detected |
| Hollister, City Of | Hollister, CA | 26,017 | 35 | Clean |
| Burlington Municipal Waterworks | Burlington, IA | 26,015 | 12 | Detected |
| Carlisle Water Trmt Plt | Carlisle, PA | 26,000 | 67 | Detected |
| Horsham Water&sewer Authority | Horsham, PA | 26,000 | 572 | Detected |
| Virgin Valley Water District | Mesquite, NV | 26,000 | 2,313 | Clean |
| Wall Twp Water Dept | Wall Twp, NJ | 26,000 | 52 | Detected |
| Shoreview | Shoreview, MN | 26,000 | 19 | Detected |
| Moscow Water Dept | Moscow, ID | 26,000 | 73 | Clean |
| Davie, Town of, #3 ; #5 | Davie, FL | 26,000 | 66 | Clean |
| Grand Junction City Of | Grand Junction, CO | 26,000 | 22 | Clean |
| Medina City PWS | Medina, OH | 25,956 | 62 | Detected |
| Wildwood, City of (7 Wps) | Wildwood, FL | 25,941 | 64 | Detected |
| Brockport Village | Brockport, NY | 25,918 | 36 | Clean |
| Montgomery Trace Water System | Navasota, TX | 25,917 | 12 | Detected |
| Wilsonville, City Of | Wilsonville, OR | 25,915 | 44 | Clean |
| City of Corsicana | Corsicana, TX | 25,885 | 14 | Detected |
| Wyandotte | Wyandotte, MI | 25,883 | 2 | Clean |
| Cash Sud | Greenville, TX | 25,875 | 11 | Detected |
| Fort Dodge Water Supply | Fort Dodge, IA | 25,874 | 80 | Clean |