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 |
|---|---|---|---|---|
| Fairbury, City Of | Fairbury, NE | 3,707 | 38 | Clean |
| Hunter Hill Safety Roadside Rest Area | Fairfield, CA | 3,707 | 10 | - |
| Waupun Correctional Inst | Madison, WI | 3,706 | 58 | Clean |
| Malden PWS | Malden, MO | 3,706 | 69 | Clean |
| Gooding City Of | Gooding, ID | 3,706 | 61 | Clean |
| Harris County MUD 361 | The Woodlands, TX | 3,705 | 1 | Detected |
| Oneill, City Of | O'Neill, NE | 3,705 | 70 | Clean |
| St John Water District 2 | Laplace, LA | 3,702 | 130 | Detected |
| Eagle, City of (Eastern Zone) | Eagle, ID | 3,702 | 51 | Clean |
| Kaunakakai | Wailuku, HI | 3,702 | 76 | Clean |
| Dakota Dunes Cid | Dakota Dunes, SD | 3,700 | 3 | - |
| Cooper Twp Municipal Auth | Morrisdale, PA | 3,700 | 520 | Clean |
| Brackenridge Boro Water Dept | Brackenridge, PA | 3,700 | 137 | Clean |
| Bristow Municipal Authority | Bristow, OK | 3,700 | 1,176 | Clean |
| Ticonderoga WD | Ticonderoga, NY | 3,700 | 47 | Detected |
| South Central Regional Water District | Bismarck, ND | 3,700 | 0 | Detected |
| Ashland PWS | Ashland, MO | 3,700 | 8 | Clean |
| Mgm Grand Casino-Detroit | Detroit, MI | 3,700 | 0 | - |
| Knox Water Works | Knox, IN | 3,700 | 85 | Clean |
| Lummi Tribal Water District | Bellingham, 10 | 3,699 | 271 | Clean |
| Two Harbors | Two Harbors, MN | 3,698 | 13 | Clean |
| Fry Road MUD | Houston, TX | 3,696 | 28 | Clean |
| Cherry Valley/ Rochdale Water District | Rochdale, MA | 3,696 | 227 | Detected |
| Walmart | Bentonville, NJ | 3,695 | 22 | Clean |
| Abita Springs Water System | Abita Springs, LA | 3,693 | 47 | Clean |
| Cal Am - Oakhurst | Sacramento, CA | 3,693 | 231 | Clean |
| Mifflinburg Boro Water Dept | Mifflinburg, PA | 3,690 | 440 | Clean |
| Atchison Co RWD 5C | Lancaster, KS | 3,690 | 46 | Clean |
| City of Carrabelle Water System | Carrabelle, FL | 3,690 | 319 | - |
| Pfeiffer Water Authority | Batesville, AR | 3,690 | 18 | - |
| Shadyside Public Water System | Barnesville, OH | 3,689 | 66 | Detected |
| Harrisburg, City Of | Harrisburg, OR | 3,684 | 332 | Clean |
| Santa Claus Water Utility | Santa Claus, IN | 3,683 | 66 | Clean |
| Horicon Waterworks | Horicon, WI | 3,682 | 64 | Clean |
| Bloomer Waterworks | Bloomer, WI | 3,680 | 147 | Clean |
| Ashburnham Water Department | Ashburnham, MA | 3,680 | 214 | Clean |
| Northwest Freeway MUD | Houston, TX | 3,678 | 7 | Clean |
| Melrose | Melrose, MN | 3,677 | 25 | Detected |
| Paoli Water Department | Orleans, IN | 3,677 | 494 | Clean |
| Lake Cushman System 5 | Hoodsport, WA | 3,675 | 58 | Detected |
| Montgomery County MUD 99 | Houston, TX | 3,675 | 0 | - |
| Essex Water Dept. | Essex, MA | 3,675 | 43 | - |
| Colorado Centre MD | Colorado Springs, CO | 3,675 | 32 | Clean |
| Lowndes County Water System | Hayneville, AL | 3,675 | 5 | Clean |
| Carey Village PWS | Carey, OH | 3,674 | 39 | Clean |
| Perry Village | Perry, NY | 3,673 | 64 | Clean |
| Verona Sud | Blue Ridge, TX | 3,672 | 27 | - |
| Whitesville Water Works | Whitesville, KY | 3,672 | 27 | Detected |
| Brundidge Water Department | Brundige, AL | 3,672 | 202 | Clean |
| Amicks Ferry Wtr System (Sc3250077) | Chapin, SC | 3,671 | 12 | Detected |