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
Le-Ax Regional Water District PWS Athens, OH 19,311 74 Clean
Ferndale Ferndale, WA 19,305 20 Clean
Montrose City Of Montrose, CO 19,305 4 Clean
City of Orange Orange, TX 19,300 118 Clean
Scituate Water Division Scituate, MA 19,297 94 Detected
Springboro PWS Springboro, OH 19,263 41 Detected
Santa Fe Springs - City, Water Dept. Santa Fe Springs, CA 19,219 11 Detected
City of West University Place West University Place, TX 19,200 80 Detected
Mount Holly, City Of Mount Holly, NC 19,200 86 Clean
Montana State University Bozeman Bozeman, MT 19,200 0 Clean
Deerfield Deerfield, IL 19,196 44 Clean
Elizabeth City, City Of Elizabeth City, NC 19,187 22 Clean
City of Murphy Murphy, TX 19,185 18 Detected
Southbridge Water Department Southbridge, MA 19,180 24 Detected
Junction City, City Of Junction City, KS 19,167 107 Clean
Norton Water Department Norton, MA 19,161 23 Detected
Bellwood Bellwood, IL 19,156 53 Clean
Pickerington City PWS Pickerington, OH 19,141 9 Clean
City of Greenwood Greenwood, MS 19,140 698 Clean
Stucker Fork Water Utility Scottsburg, IN 19,120 636 Clean
City of Alice Alice, TX 19,104 25 Detected
Quartz Hill Water Dist. Quartz Hill, CA 19,100 4 Clean
Indiana American Water - Shelbyville Greenwood, IN 19,093 2 Clean
Nellis Air Force Base Nellis Afb, NV 19,081 42 Clean
Alpha-Talbott Utility District Talbott, TN 19,075 3 Detected
Blount County Water Authority Cleveland, AL 19,074 247 Clean
Alsip Alsip, IL 19,063 22 Clean
Lamont Public Utility Dist Lamont, CA 19,057 128 Clean
Western Allegheny County Mun A Oakdale, PA 19,031 101 Detected
Eastern Heights Utilities Bloomfield, IN 19,028 88 Clean
Clive Water Department Clive, IA 19,010 19 Clean
West Warren-Viola U.d. Smartt, TN 19,009 49 Clean
Quantico Marine Base-Mainside McIncr, McB Quantico, VA 19,000 204 Clean
Heber City Water System Heber City, UT 19,000 75 Clean
Payson City Water System Payson, UT 19,000 135 Clean
Elizabethtown Area Water Elizabethtown, PA 19,000 405 Detected
Center Twp Water Auth Aliquippa, PA 19,000 513 Clean
Otsego Otsego, MN 19,000 18 Clean
IL American-Streator Godfrey, IL 19,000 71 Detected
Willows WD Centennial, CO 19,000 2 -
Harris County MUD 82 Houston, TX 18,990 29 Clean
Spo Co Water Dist 3 Sys 1 Spokane, WA 18,983 124 Clean
Greenfield, City Of Greenfield, CA 18,967 13 Clean
San Jacinto, City Of San Jacinto, CA 18,950 11 Clean
Lebanon, City Of Lebanon, OR 18,945 42 Clean
Coastside County Water District Half Moon Bay, CA 18,940 33 Clean
Orleans Water Department Orleans, MA 18,921 40 Clean
City of Rio Grande City Rio Grande, TX 18,912 76 Detected
South Bay Rod & Gun Club Inc. San Diego, CA 18,900 55 -
City of Brownwood Brownwood, TX 18,862 13 Detected
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