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 |
|---|---|---|---|---|
| Macbee Sud | Wills Point, TX | 7,548 | 41 | Detected |
| Blue Ridge West MUD | Houston, TX | 7,545 | 35 | Detected |
| City of Louisville | Louisville, MS | 7,545 | 238 | Clean |
| Piedmont Municipal Authority | Piedmont, OK | 7,542 | 395 | Detected |
| Harris County Wcid 1 | Highlands, TX | 7,539 | 13 | Detected |
| Creston Water Supply | Creston, IA | 7,536 | 72 | Detected |
| Globe City Of | Globe, AZ | 7,536 | 846 | Detected |
| Pottawatomie Co RWD 1 | Saint George, KS | 7,535 | 8 | Clean |
| Nsa Hampton Roads, Main Base | Norfolk, VA | 7,533 | 0 | - |
| Tuckaseigee Water & Sewer Auth | Sylva, NC | 7,528 | 132 | Clean |
| Senoia | Senoia, GA | 7,528 | 64 | Detected |
| New Paltz (Village) Water Dist | New Paltz, NY | 7,523 | 121 | Clean |
| Sebastopol, City Of | Sebastopol, CA | 7,522 | 19 | Clean |
| Winnsboro Water System | Winnsboro, LA | 7,518 | 70 | Clean |
| Castroville Community Services District | Castroville, CA | 7,515 | 13 | Clean |
| St James Water District 2 | Convent, LA | 7,513 | 134 | Detected |
| Fort Scott, City Of | Fort Scott, KS | 7,513 | 50 | Detected |
| Mansfield Water System | Mansfield, LA | 7,512 | 236 | Detected |
| Tallassee Water Works | Tallassees, AL | 7,512 | 43 | Detected |
| Eagle Town Of | Eagle, CO | 7,511 | 100 | Clean |
| Maidencreek Twp Water Auth | Blandon, PA | 7,505 | 351 | Detected |
| Morgan County Water District | West Liberty, KY | 7,502 | 54 | Clean |
| Folsom State Prison | Represa, CA | 7,502 | 4 | Detected |
| Lexington, City Of | Lexington, VA | 7,500 | 44 | Clean |
| Carroll Regional Water System | Hillsville, VA | 7,500 | 97 | Clean |
| Locust Valley WD | Locust Valley, NY | 7,500 | 6 | Detected |
| Keyport Water Dept | Keansburg, NJ | 7,500 | 82 | Detected |
| Livingston City Of | Livingston, MT | 7,500 | 980 | Clean |
| Jefferson County PWSD 6 | House Springs, MO | 7,500 | 20 | Detected |
| Adair County PWSD 1 | Kirksville, MO | 7,500 | 7 | Detected |
| Iron Mountain | Iron Mountain, MI | 7,500 | 59 | Clean |
| St Mary Water & Sewer Comm #3 | Centerville, LA | 7,500 | 37 | Detected |
| Mountain Home Air Force Base | Mountain Home Afb, ID | 7,500 | 574 | Detected |
| Dahlonega | Dahlonega, GA | 7,500 | 33 | Clean |
| USA-Hunter Army Airfield - Main | Fort Stewart, GA | 7,500 | 16 | Clean |
| Patrick Space Force Base(consec) | Patrick Air Force Base, FL | 7,500 | 50 | Clean |
| Lamar City Of | Lamar, CO | 7,500 | 79 | Detected |
| Parkville WD | Leadville, CO | 7,500 | 1,268 | Clean |
| Florence City Of | Florence, CO | 7,500 | 214 | Clean |
| Caltrans-Willows Reststop-Sb | Willows, CA | 7,500 | 13 | - |
| Caltrans-Willows Reststop-Nb | Willows, CA | 7,500 | 12 | - |
| North Chelmsford Water Dist | North Chelmsford, MA | 7,498 | 14 | Clean |
| Hawkinsville | Hawkinsville, GA | 7,491 | 47 | Clean |
| Stevens Co PUD - Suncrest | Loon Lake, WA | 7,484 | 496 | Detected |
| Seaside Water Department | Seaside, OR | 7,482 | 138 | Clean |
| Pine Ridge Water System | Pine Ridge, 08 | 7,482 | 114 | Clean |
| Hughson, City Of | Hughson, CA | 7,481 | 87 | Clean |
| Aquarion-Ridgefield | Shelton, CT | 7,476 | 93 | Detected |
| Silvis | Silvis, IL | 7,473 | 278 | Clean |
| Lawrence Co Reg Water Dist | Pocahontas, AR | 7,469 | 30 | Clean |