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
Arvada City Of Arvada, CO 171,610 18 Clean
Oceanside, City Of Oceanside, CA 171,483 12 Clean
North Alamo WSC Edinburg, TX 171,195 93 Detected
Moulton Niguel Water District Laguna Hills, CA 170,236 0 Clean
Elsinore Valley MWD Lake Elsinore, CA 169,455 22 Detected
Lafayette Utilities Water System Lafayette, LA 169,389 2 Clean
Savannah-Main Port Wentworth, GA 168,958 29 Clean
Suburban Water Systems-San Jose Covina, CA 168,843 10 Detected
Pwcsa - East Woodbridge, VA 168,747 1 Detected
Corona, City Of Corona, CA 168,575 36 Detected
Santa Margarita Water District Rancho Santa Margarita, CA 168,289 2 Clean
Springfield Water and Sewer Commission Springfield, MA 167,954 41 Clean
Melbourne, City Of Melbourne, FL 167,753 50 Detected
Union County Water System Monroe, NC 167,554 45 Detected
Tuscaloosa Water & Sewer Tuscaloosa, AL 166,524 43 Clean
Kent Water Department Kent, WA 166,421 37 Detected
Boulder City Of Boulder, CO 166,080 31 Clean
Lansing Board of Water & Light Lansing, MI 166,000 18 Clean
City of Chesapeake - Northwest River Sys Chesapeake, VA 165,240 29 Clean
Tempe City Of Tempe, AZ 165,000 339 Detected
Pasadena Water and Power Pasadena, CA 164,344 8 Clean
Redmond Water System City Of Redmond, WA 163,335 2 Detected
City of Hayward Hayward, CA 162,954 6 Clean
Forsyth Co. Water & Sewer Cumming, GA 161,200 26 Clean
Bakersfield, City Of San Jose, CA 160,144 9 Detected
Joliet Joliet, IL 160,000 380 Clean
Alexandria, City Of Hopewell, VA 159,200 15 Detected
City of Sunnyvale Sunnyvale, CA 157,566 145 Clean
Asheville City Of Asheville, NC 157,431 25 Clean
City of Midland Water Purification Plant Midland, TX 157,000 460 Detected
Onslow Wtr and Sewer Authority Jacksonville, NC 156,755 247 Clean
Naperville Naperville, IL 156,406 5 Clean
City of Roseville Roseville, CA 155,612 7 Clean
Davidson Water Inc Welcome, NC 153,632 57 Clean
Kansas City Board of Public Utilities Kansas City, KS 152,960 58 Clean
California Water Service Co. - Ela San Jose, CA 152,474 13 Detected
Atlantic City Mua Atlantic City, NJ 152,415 122 Detected
City of Mesquite Mesquite, TX 152,020 9 Detected
City of Pasadena Pasadena, TX 152,000 31 Detected
Pomona - City, Water Dept. Pomona, CA 151,713 14 Detected
Mayaguez Mayaguez, PR 151,555 1,188 Clean
City of Killeen Killeen, TX 151,261 29 Detected
Montgomery County Water Services 1 PWS Kettering, OH 150,207 33 Detected
City of Denton Denton, TX 150,037 13 Detected
Del-Co Water Company, Inc. Delaware, OH 150,000 108 Detected
IL American-Champaign Godfrey, IL 150,000 7 Clean
Cws - Visalia San Jose, CA 148,496 4 Detected
Iowa-American Wtr Co-Davenport Davenport, IA 147,720 11 Detected
Hollywood, City Of Hollywood, FL 147,566 77 Detected
Meridian Water Dept Meridian, ID 147,340 64 Detected
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