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 |
|---|---|---|---|---|
| Signal Hill - City, Water Dept. | Signal Hill, CA | 11,848 | 21 | Clean |
| Rathbun Reg Water Assn (Ft Madison) | Centerville, IA | 11,840 | 16 | Detected |
| Harris County MUD 368 | Houston, TX | 11,835 | 7 | Detected |
| Mid-Dakota Rural Water | Miller, SD | 11,833 | 3 | Clean |
| Tri Community Water System | Millbrook, AL | 11,832 | 5 | Detected |
| Pearl River Central W/A | McNeill, MS | 11,830 | 739 | Clean |
| Walterboro City of (1510004) | Walterboro, SC | 11,829 | 16 | Clean |
| Clawson | Clawson, MI | 11,825 | 21 | Clean |
| Fort Belvoir North Area | Usag Fort Belvoir, VA | 11,822 | 1 | Detected |
| Smyrna Water Department | Smyrna, DE | 11,813 | 7 | Detected |
| Warrenton, Town Of | Warrenton, VA | 11,801 | 34 | Detected |
| Cedarburg L & W Commission | Cedarburg, WI | 11,800 | 107 | Clean |
| Forest Lake | Forest Lake, MN | 11,800 | 21 | Clean |
| Larchmont Estates Subdivision | Savannah, GA | 11,799 | 117 | Clean |
| Amherst City PWS | Amherst, OH | 11,797 | 9 | Clean |
| Wrentham Water Division | Wrentham, MA | 11,795 | 125 | Detected |
| NJ American Water - Roxbury | Washington, NJ | 11,793 | 210 | Clean |
| Berkeley Twp Mua | Berkeley Twp, NJ | 11,792 | 112 | Clean |
| Towns County | Young Harris, GA | 11,791 | 15 | Clean |
| Prvwsd-Pelahatchie Bay | Ridgeland, MS | 11,790 | 965 | Clean |
| Independence Township | Clarkston, MI | 11,790 | 36 | Detected |
| Hanscom Afb | Bedford, MA | 11,789 | 41 | Clean |
| Saint Peter | St. Peter, MN | 11,784 | 0 | Clean |
| Rogers Co RWD # 5 | Claremore, OK | 11,782 | 79 | Clean |
| Port Labelle | Labelle, FL | 11,782 | 49 | Clean |
| Fox Lake | Ingleside, IL | 11,780 | 49 | Detected |
| Town of Hillsborough | Hillsborough, CA | 11,766 | 5 | Clean |
| Sussex Village Hall & Water Utility | Sussex, WI | 11,750 | 1,254 | Clean |
| Fenton, City Of | Fenton, MI | 11,746 | 17 | Detected |
| Gowc East Water System | West Monroe, LA | 11,742 | 0 | Clean |
| Southwest Milam WSC | Rockdale, TX | 11,739 | 13 | Clean |
| Macedonia Eylau MUD 1 | Texarkana, TX | 11,739 | 50 | Clean |
| Spring Creek Utility District | The Woodlands, TX | 11,733 | 4 | Clean |
| Severance Town Of | Severance, CO | 11,733 | 30 | Clean |
| Culkin Water Dist | Vicksburg, MS | 11,730 | 140 | Clean |
| Winfield, City Of | Winfield, KS | 11,726 | 34 | Clean |
| Spring Lake, Town Of | Spring Lake, NC | 11,725 | 137 | Detected |
| Sonoma, City Of | Sonoma, CA | 11,725 | 17 | Detected |
| Chowan Co Water System | Edenton, NC | 11,722 | 42 | Clean |
| River Forest | River Forest, IL | 11,717 | 17 | Clean |
| Jackson Water Works & Sewer Board | Jackson, AL | 11,715 | 56 | Detected |
| Schiller Park | Schiller Park, IL | 11,709 | 54 | Clean |
| Deschutes Valley Water Dist | Madras, OR | 11,700 | 59 | Clean |
| White Bear Township | White Bear Lake, MN | 11,699 | 6 | Detected |
| Vermillion | Vermillion, SD | 11,695 | 3 | Clean |
| South Middleton Twp Water Auth | Boiling Springs, PA | 11,695 | 354 | Detected |
| Celina City | Celina, OH | 11,682 | 451 | Detected |
| Federal Heights City Of | Federal Heights, CO | 11,678 | 4 | Clean |
| Columbiana, the Ww Board of the Town Of | Columbiana, AL | 11,664 | 150 | Clean |
| Houma Water Treatment Service Area | Houma, LA | 11,658 | 20 | Detected |