PlainWater

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
Lares Espino Santurce, PR 16,676 200 Detected
Douglas City Of Douglas, AZ 16,656 929 Clean
Rincon Water System Rincon, GA 16,654 41 Clean
Harriman Utility Board Harriman, TN 16,653 41 Clean
Russellville Water Works Russellville, AL 16,650 9 Clean
MO American Platte County Parkville, MO 16,645 4 Clean
Yelm City Of Yelm, WA 16,633 9 Clean
Douglas Water Authority Douglas, AL 16,632 186 Clean
Sonterra MUD Austin, TX 16,614 23 Detected
Ukiah, City Of Ukiah, CA 16,607 4 Detected
PA American Water Co Clarion New Castle, PA 16,600 9 Clean
Fulton City Fulton, NY 16,600 13 Clean
Phoenixville Water Dept Phoenixville, PA 16,599 502 Detected
Naval Air Station/Whidbey Island NAS Whidbey Island, WA 16,595 10 Clean
Olivehurst Public U.d. Olivehurst, CA 16,595 28 Clean
Grand Canyon National Park Grand Canyon, AZ 16,590 424 Clean
Johnson City Water Works Johnson City, NY 16,578 114 Detected
Waterford Wpca Waterford, CT 16,578 104 Clean
Pineville Water System Pineville, KY 16,573 734 Clean
Wright-Patterson Afb Area a PWS Vandalia, OH 16,551 32 Detected
Jefferson County PWSD 2 Eureka, MO 16,548 78 Clean
Cole County PWSD 1 Jefferson City, MO 16,548 6 Detected
Harris County MUD 26 Houston, TX 16,518 3 Clean
Newton Water Supply Newton, IA 16,518 34 Clean
Notla Water Authority Blairsville, GA 16,518 112 Clean
Ohio County Water District Hartford, KY 16,511 411 Clean
City of Highland Village Highland Village, TX 16,500 25 Detected
Country Club Hills Country Club Hills, IL 16,500 24 Clean
Defiance City Defiance, OH 16,494 386 Detected
Frenchtown Township Monroe, MI 16,481 168 Detected
Opa Locka, City Of Opalocka, FL 16,479 67 Detected
Ramsey Water Company, Inc. Ramsey, IN 16,475 29 Detected
Safety Harbor Water Dept Safety Harbor, FL 16,473 26 Detected
Bridgeview Bridgeview, IL 16,467 21 Clean
Park Ridge Water Dept Park Ridge, NJ 16,466 512 Detected
Red Wing Red Wing, MN 16,459 45 Clean
City of Groves Groves, TX 16,452 27 Clean
North Peninsula Poulsbo, WA 16,449 31 Clean
El Segundo-City, Water Dept. El Segundo, CA 16,445 4 Clean
Jackson County PWSD 2 Raytown, MO 16,440 19 Clean
Chatham Chatham, IL 16,423 39 Clean
Frankfort Water Works Frankfort, IN 16,422 193 Clean
Barbourville Utilities Barbourville, KY 16,420 347 Detected
Fillmore Water Dept Fillmore, CA 16,419 13 Clean
Olympic View Water & Sewer District Edmonds, WA 16,403 14 Clean
City of Royse City Royse City, TX 16,400 55 Detected
Hazel Park Hazel Park, MI 16,400 0 Clean
Allen County Water District Scottsville, KY 16,398 37 Clean
Harris County MUD 55 Heritage Park Houston, TX 16,392 20 Detected
City of Cleveland Cleveland, MS 16,392 389 Clean
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