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
Concord Water Dept Concord, NH 44,215 4 Clean
Clwsc Canyon Lake Shores Canyon Lake, TX 44,196 142 Detected
University of Central Florida Orlando, FL 44,103 144 Clean
Saginaw, City Of Saginaw, MI 44,058 10 Detected
Mountain Water Dist Pikeville, KY 44,057 574 Clean
Bancroft Clover WSD Lakewood, CO 44,000 0 -
Battle Creek - Verona System Battle Creek, MI 43,975 48 Detected
Pittsfield Dpu Water Dept Pittsfield, MA 43,927 144 Clean
North Brunswick W Dept Franklin, NJ 43,905 75 Clean
Delaware City PWS Delaware, OH 43,895 18 Clean
Rohnert Park, City Of Rohnert Park, CA 43,821 561 Detected
Elk Grove Water District Elk Grove, CA 43,813 6 Detected
El Centro, City Of El Centro, CA 43,772 12 Clean
Wenatchee City Of Wenatchee, WA 43,690 91 Clean
City of Sherman Sherman, TX 43,645 49 Detected
Coachella Water Authority Coachella, CA 43,590 24 Clean
Issaquah Water System Issaquah, WA 43,584 257 Clean
Texas State University - San Marcos San Marcos, TX 43,552 52 Clean
Mission Springs WD Desert Hot Springs, CA 43,484 21 Clean
City of Hattiesburg Hattiesburg, MS 43,449 811 Clean
Huber Heights Public Water System Huber Heights, OH 43,439 39 Clean
Liberty Utilities Pine Bluff, AR 43,438 4 Clean
Diablo Water District Oakley, CA 43,357 0 Clean
Springfield Water System Springfield, TN 43,338 53 Detected
PA American Water Co Butler New Castle, PA 43,286 9 Clean
PA Amer Water Co New Castle New Castle, PA 43,279 7 Detected
Fort Campbell Water System Ft. Campbell, TN 43,270 248 Detected
Buffalo Grove Buffalo Grove, IL 43,212 13 Clean
City of Coppell Coppell, TX 43,193 6 Detected
City of Friendswood Friendswood, TX 43,190 4 Detected
Gswc - Norwalk Anaheim, CA 43,176 3 Detected
Leesburg, City Of Leesburg, FL 43,148 79 Detected
Monroe, City Of Monroe, NC 43,081 90 Detected
St. Augustine WS St. Augustine, FL 43,069 30 Clean
Southington Water Department Southington, CT 43,069 1,028 Detected
Danville, City Of Danville, VA 43,055 16 Detected
Lexington Park California, MD 43,030 31 Clean
Aqua PA Roaring Creek Division Shamokin, PA 43,000 17 Clean
Massapequa WD Massapequa, NY 43,000 346 Clean
Manhasset Lakeville WD Great Neck, NY 43,000 1,476 Detected
Poughkeepsie Townwide WD Poughkeepsie, NY 43,000 6 Clean
Walla Walla Water Division Walla Walla, WA 42,959 141 Clean
Fuquay-Varina, Town Of Fuquay-Varina, NC 42,954 64 Detected
Southwest Regional Water District Hamilton, OH 42,856 0 Detected
Mankato Mankato, MN 42,803 4 Clean
Manassas, City Of Manassas, VA 42,696 58 Detected
Bonney Lake Water Department City Buckley, WA 42,654 151 Detected
Town of Prosper Prosper, TX 42,598 5 Detected
Midland, City Of Midland, MI 42,547 0 Detected
Maine Water Company Biddeford Saco Div Poland, ME 42,508 39 Clean
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