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.

Population Violations Health Violations Name
System Name Location Population Violations PFAS
San Luis Obispo Water Department San Luis Obispo, CA 47,788 2 Clean
Lca Wlsa Central Division Allentown, PA 47,693 283 Detected
Farmington Water System Farmington, NM 47,655 37 Clean
East Providence-City Of East Providence, RI 47,618 60 Clean
Binghamton, City Of Binghamton, NY 47,600 27 Detected
University of South Florida Tampa, FL 47,586 106 Detected
Washington County Service Authority Abingdon, VA 47,574 34 Clean
Lajas Lajas, PR 47,531 337 Clean
Cerritos - City, Water Dept. Cerritos, CA 47,475 0 Detected
Beverly Water Dept Beverly, MA 47,461 9 Detected
NJ American Water - Mount Holly Delran, NJ 47,427 8 Detected
City of los Banos Los Banos, CA 47,419 10 Clean
Beckley Water Company Beckley, WV 47,386 49 Clean
City of Morgan Hill Morgann Hill, CA 47,374 256 Detected
City of Wylie Wylie, TX 47,322 11 Detected
Bloomfield Water Department Bloomfield, NJ 47,315 368 Clean
Roseville, City Of Roseville, MI 47,299 14 Detected
City of Rockwall Rockwall, TX 47,251 2 Detected
Spanish Fork City Spanish Fork, UT 47,169 586 Clean
Golden State Water Co. - Cordova Rancho Cordova, CA 47,161 12 Clean
Merchantville Pennsauken Pennsauken, NJ 47,144 307 Detected
Northeast Alabama Water, Sewer, and Fpd Fort Payne, AL 47,070 398 Detected
Shakopee Shakopee, MN 47,000 0 Detected
Orangeburg Dpu (Sc3810001) Orangeburg, SC 46,896 23 Detected
PA American Royersford Spring City, PA 46,847 146 Detected
Camarillo Water Dept Camarillo, CA 46,824 0 Clean
Plymouth Water Department Plymouth, MA 46,799 37 Detected
Riviera Beach Utility District, City Of Riviera Beach, FL 46,762 565 Detected
Jamestown Bpu Jamestown, NY 46,712 171 Clean
Attleboro Water Dept Attleboro, MA 46,654 38 Detected
Rockett Sud Red Oak, TX 46,614 43 Detected
Prattville, the Ww Board of the City Of Prattville, AL 46,614 337 Detected
O Fallon O'Fallon, IL 46,603 102 Detected
City of Camden Camden, NJ 46,585 198 Detected
Caguas Norte Caguas, PR 46,530 315 Detected
Colton, City Of Colton, CA 46,525 3 Detected
Salina, City Of Salina, KS 46,481 19 Detected
Kiryas Joel Monroe, NY 46,477 635 Detected
Elkhart Public Works and Utilities Elkhart, IN 46,455 200 Detected
Laguna Madre Water District Port Isabel, TX 46,341 140 Detected
Medina Co/Northwest PWS Medina, OH 46,324 27 Detected
Aqua Ohio - Marion Marion, OH 46,317 20 Clean
City of Keller Keller, TX 46,308 15 Detected
Arlington Water Dept. (Mwra) Arlington, MA 46,308 21 Clean
Bellflower - Somerset MWC Bellflower, CA 46,300 2 Detected
Portage Portage, MI 46,292 92 Detected
City of Haltom City Haltom City, TX 46,260 45 Detected
Frederick Water Winchester, VA 46,206 23 Detected
Gordons Corner Water Co Marlboro, NJ 46,196 24 Detected
Dunedin Water System Dunedin, FL 46,161 46 Clean
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