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 |
|---|---|---|---|---|
| Los Angeles Cwwd 40 Reg 4 & 34 Lancaster | Alhambra, CA | 208,129 | 11 | Clean |
| York Water Co | York, PA | 206,762 | 30 | Clean |
| Ocud/Western Regional Wtr Sys (5 Wps) | Orlando, FL | 206,742 | 40 | Detected |
| Worcester Dpwp, Water Supply Division | Worcester, MA | 206,518 | 47 | Detected |
| Augusta-Richmond Co WS | Augusta, GA | 204,000 | 19 | Detected |
| Westminster City Of | Westminster, CO | 202,078 | 18 | Clean |
| City of Grand Prairie | Grand Prairie, TX | 201,843 | 15 | Detected |
| Amarillo Municipal Water System | Amarillo, TX | 201,291 | 402 | Detected |
| Brownsville Public Utilities Board | Brownsville, TX | 201,249 | 7 | Detected |
| City of Huntington Beach | Huntington Beach, CA | 201,000 | 9 | Detected |
| Tallahassee, City Of | Tallahassee, FL | 200,480 | 22 | Detected |
| Oxnard Water Dept | Oxnard, CA | 200,232 | 14 | Clean |
| Alderwood Water District | Lynnwood, WA | 200,000 | 6 | Clean |
| West View Water Authority | Pittsburgh, PA | 200,000 | 290 | Clean |
| Salem Public Works | Salem, OR | 199,820 | 24 | Clean |
| Northern Kentucky Water District | Ft. Thomas, KY | 199,460 | 674 | Detected |
| Cfpua-Wilmington | Wilmington, NC | 198,740 | 43 | Detected |
| Contra Costa Water District | Concord, CA | 198,000 | 4 | Clean |
| Gru - Murphree WTP | Gainesville, FL | 195,681 | 30 | Clean |
| Sacramento Suburban Water District | Sacramento, CA | 194,444 | 23 | Detected |
| Lakeland, City Of | Lakeland, FL | 193,297 | 16 | Clean |
| Kalamazoo | Kalamazoo, MI | 192,992 | 28 | Detected |
| Shreveport Water System | Shreveport, LA | 192,378 | 135 | Detected |
| Syracuse City | Syracuse, NY | 192,000 | 106 | Clean |
| City of Georgetown | Georgetown, TX | 191,639 | 15 | Detected |
| City of Stockton | Stockton, CA | 191,302 | 24 | Detected |
| Sweetwater Authority | Chula Vista, CA | 191,282 | 15 | Detected |
| McAllen Public Utility | McAllen, TX | 189,957 | 12 | Detected |
| City of Jackson | Jackson, MS | 189,673 | 357 | Clean |
| Glendale-City, Water Dept. | Glendale, CA | 188,784 | 2 | Detected |
| Peoria City Of | Peoria, AZ | 187,676 | 2,461 | Detected |
| Pembroke Pines, City Of | Pembroke Pines, FL | 187,459 | 131 | Detected |
| Marin Municipal Water District | Corte Madera, CA | 186,895 | 1 | Clean |
| Fort Lauderdale, City Of | Ft Lauderdale, FL | 185,163 | 144 | Detected |
| Ontario Municipal Utilities Company | Ontario, CA | 185,010 | 9 | Detected |
| Scwa - Laguna/Vineyard | Sacramento, CA | 184,896 | 2 | Detected |
| San Francisco International Airport | San Francisco, CA | 183,386 | 11 | Clean |
| Aurora | Aurora, IL | 183,000 | 55 | Detected |
| Western Virginia Water Authority | Roanoke, VA | 182,700 | 14 | Detected |
| Evansville Water Utility | Evansville, IN | 182,444 | 34 | Clean |
| North Miami Beach | Miami Garden, FL | 180,000 | 46 | Detected |
| Ft Collins City Of | Fort Collins, CO | 179,901 | 49 | Clean |
| Dallas Fort Worth International Airport | Dallas, TX | 177,673 | 12 | Detected |
| California Water Service - Stockton | San Jose, CA | 176,266 | 2 | Detected |
| Henry County Water Authority | Jackson, GA | 176,038 | 14 | Detected |
| Eugene Water & Electric Board | Eugene, OR | 176,000 | 12 | Clean |
| Santa Rosa, City Of | Santa Rosa, CA | 175,396 | 4 | Clean |
| City of Garden Grove | Garden Grove, CA | 174,226 | 0 | Detected |
| Cape Coral, City Of | Cape Coral, FL | 172,693 | 28 | Clean |
| Charlotte County Utilities | Port Charlotte, FL | 172,040 | 7 | Detected |