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 |
|---|---|---|---|---|
| Town of Avon | Avon, MA | 4,777 | 92 | Detected |
| Northwestern W and SD - Portage | Bowling Green, OH | 4,776 | 13 | Detected |
| Oak Park Heights | Oak Park Heights, MN | 4,776 | 16 | Detected |
| Metter | Metter, GA | 4,776 | 42 | Clean |
| Gibson Water Authority | Haubstadt, IN | 4,775 | 42 | Detected |
| Coldwater Village | Coldwater, OH | 4,774 | 309 | Clean |
| Union Public Utility District | Murphys, CA | 4,774 | 37 | Clean |
| Loretto Water Department | Loretto, TN | 4,773 | 76 | Clean |
| Clinton Water Utility | Clinton, IN | 4,773 | 589 | Detected |
| Breese | Breese, IL | 4,772 | 54 | Clean |
| London Grove Twp Mun Auth | West Grove, PA | 4,770 | 117 | Detected |
| Dallas | Dallas, GA | 4,770 | 31 | Clean |
| Boiling Springs, Town Of | Boiling Springs, NC | 4,769 | 56 | Clean |
| City of Belzoni | Belzoni, MS | 4,768 | 940 | Clean |
| Melrose WSC | Nacogdoches, TX | 4,767 | 430 | - |
| Dobbin Plantersville WSC 1 | Plantersville, TX | 4,767 | 172 | Clean |
| Newport City Water System | Newport, VT | 4,766 | 91 | Clean |
| Sac & Fox (Meskwaki) in Iowa | Tama, 07 | 4,765 | 154 | Clean |
| Eutaw Water Department | Eutaw, AL | 4,764 | 120 | Clean |
| Lakeport, City Of | Lakeport, CA | 4,762 | 9 | Clean |
| East Palestine Village PWS | East Palestine, OH | 4,761 | 37 | Clean |
| St Landry Water Works District 2 Rural | Sunset, LA | 4,761 | 31 | Clean |
| Buckingham Twp Cold Spring | Buckingham, PA | 4,760 | 54 | Detected |
| Huttonsville Psd | Mill Creek, WV | 4,758 | 126 | Clean |
| Harris County MUD 119 | Houston, TX | 4,758 | 8 | Detected |
| Hcwrc/Pebble Creek Subdivision | Tampa, FL | 4,757 | 57 | Detected |
| Harris County Wcid 92 | Houston, TX | 4,752 | 9 | Clean |
| Lobelville Water Dept | Lobelville, TN | 4,752 | 34 | - |
| Upmc Shadyside Hillman Campus | Pittsburgh, PA | 4,750 | 52 | Clean |
| Jefferson Regional Water Authority | Miamisburg, OH | 4,750 | 190 | Detected |
| Arizona Water Co - San Manuel | Phoenix, AZ | 4,748 | 38 | Clean |
| Forks Municipal Water Dept | Forks, WA | 4,744 | 15 | Clean |
| Harris County MUD 50 | Crosby, TX | 4,743 | 26 | Clean |
| Cinco MUD 2 | Houston, TX | 4,743 | 0 | Clean |
| Alligator Rural Water (Sc1320004) | McBee, SC | 4,743 | 38 | Clean |
| Byron | Byron, IL | 4,743 | 423 | Clean |
| Denali - Main / Front Country | Denali Park, AK | 4,741 | 91 | Clean |
| Harris County MUD 501 | Houston, TX | 4,740 | 1 | - |
| Oak Hill Water Assn | Pontotoc, MS | 4,739 | 465 | Clean |
| Salem PWS | Salem, MO | 4,736 | 31 | Clean |
| Houlton Water Company | Houlton, ME | 4,735 | 30 | Detected |
| Rincon WSC | Taft, TX | 4,734 | 36 | Detected |
| Jefferson Co PWSD 8 | Cedar Hill, MO | 4,733 | 4 | Clean |
| Crystal City PWS | Crystal City, MO | 4,733 | 31 | Detected |
| Holdenville | Holdenville, OK | 4,732 | 599 | Detected |
| Cherry Valley | Cherry Valley, IL | 4,731 | 22 | Clean |
| North Overton Utility District | Allons, TN | 4,729 | 41 | Detected |
| Lexington PWS | Lexington, MO | 4,729 | 110 | Clean |
| Sullivan | Sullivan, IL | 4,729 | 31 | Clean |
| Shrewsbury Borough | Shrewsbury, PA | 4,727 | 754 | Detected |