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 |
|---|---|---|---|---|
| Bloomingdale | Bloomingdale, IL | 22,018 | 79 | Clean |
| Tavares Water Department (4 Wps) | Tavares, FL | 22,007 | 103 | Clean |
| Christiansburg Town Of | Christiansburg, VA | 22,000 | 12 | Clean |
| North Ogden City | North Ogden, UT | 22,000 | 490 | Clean |
| Highland City | Lehi, UT | 22,000 | 850 | Clean |
| Hackettstown Mua | Hackettstown, NJ | 22,000 | 206 | Clean |
| Montville Twp Mua | Montville, NJ | 22,000 | 87 | Detected |
| West Deptford Twp Water Dept | West Deptford Township, NJ | 22,000 | 203 | Detected |
| Ozark PWS | Ozark, MO | 22,000 | 54 | Detected |
| Patuxent Naval Air Station (Navfac-Wash) | Patuxent River, MD | 22,000 | 164 | Clean |
| Fort Campbell | Fort Campbell, KY | 22,000 | 30 | - |
| South Holland | South Holland, IL | 22,000 | 37 | Detected |
| Usaf-Robins Ab Main | Robins Afb, GA | 22,000 | 39 | Clean |
| N.a.s. Jacksonville | Jacksonville, FL | 22,000 | 34 | Clean |
| Cherry Creek Valley WSD | Denver, CO | 22,000 | 0 | - |
| Nogales City Of | Nogales, AZ | 22,000 | 1,954 | Clean |
| Park Forest | Park Forest, IL | 21,975 | 154 | Clean |
| Temescal Valley Water District | Temescal Valley, CA | 21,971 | 16 | Clean |
| Niles City PWS | Niles, OH | 21,961 | 11 | Detected |
| PUD #1 of Asotin County | Clarkston, WA | 21,930 | 133 | Clean |
| Fernandina Beach WTP | Fernandina Beach, FL | 21,925 | 46 | Clean |
| Shafter, City Of | Shafter, CA | 21,915 | 39 | Clean |
| Southeastern Water Assoc/Nelson Valley | Somerset, KY | 21,895 | 21 | Clean |
| Charter Township of Delta | Lansing, MI | 21,856 | 0 | Clean |
| Selma, the Ww and Sb of the City Of | Selma, AL | 21,834 | 81 | Clean |
| Caledonia Water Utility - Village Of | Racine, WI | 21,819 | 29 | Clean |
| Adams County Regional WD PWS | West Union, OH | 21,810 | 21 | Clean |
| Mandan City Of | Mandan, ND | 21,769 | 0 | Clean |
| Campbell County Central System | Lynchburg, VA | 21,761 | 31 | Clean |
| Darien | Darien, IL | 21,751 | 15 | Clean |
| Chillicothe City PWS | Chillicothe, OH | 21,725 | 24 | Detected |
| Sedalia PWS | Sedalia, MO | 21,725 | 60 | Clean |
| Hamilton Township Mua | Mays Landing, NJ | 21,720 | 297 | Detected |
| Mount Pleasant | Mt Pleasant, MI | 21,688 | 19 | Clean |
| Lincoln Water Commission | Lincoln, RI | 21,664 | 18 | Clean |
| Linda County Water District | Marysville, CA | 21,654 | 25 | Clean |
| Scarsdale Water Department | Scarsdale, NY | 21,649 | 0 | Clean |
| Sylvania City | Sylvania, OH | 21,618 | 11 | Clean |
| Imperial, City Of | Imperial, CA | 21,591 | 39 | Clean |
| Nwwa Warrington Township | North Wales, PA | 21,588 | 1,675 | Detected |
| Grand Chute TN San Dist 1 | Grand Chute, WI | 21,583 | 38 | Clean |
| Santa Fe I.D. | Rancho Santa Fe, CA | 21,578 | 1 | Detected |
| Westborough Water Department | Westborough, MA | 21,567 | 147 | Detected |
| Lafayette Water System | Lafayette, TN | 21,551 | 63 | Clean |
| Muskingum County Water - SE | Zanesville, OH | 21,540 | 35 | Detected |
| Forest City, Town Of | Forest City, NC | 21,521 | 109 | Clean |
| Minneola Water Department (2 Wps) | Minneola, FL | 21,521 | 66 | Detected |
| Raymore PWS | Raymore, MO | 21,517 | 33 | Clean |
| Washington State University | Pullman, WA | 21,506 | 27 | Clean |
| Bartow, City Of | Bartow, FL | 21,501 | 14 | Detected |