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Browse Water Systems

23,975 public water systems in WI.

Public Water Systems Database

Browse 23,975 EPA-regulated public water systems with identifiers, population served, and water source type. Use the filters below to narrow results by state, system type, or name.

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System Name PWSID State Type Population Served
MILWAUKEE WATERWORKS WI2410100 Wisconsin Community 626,000
MADISON WATER UTILITY WI1130224 Wisconsin Community 272,000
GREEN BAY WATERWORKS WI4050356 Wisconsin Community 107,369
RACINE WATERWORKS WI2520062 Wisconsin Community 105,100
KENOSHA WATER UTILITY WI2300046 Wisconsin Community 99,218
APPLETON WATERWORKS WI4450333 Wisconsin Community 74,511
WAUKESHA WATER UTILITY WI2680238 Wisconsin Community 70,718
EAU CLAIRE WATERWORKS WI6180230 Wisconsin Community 70,587
JANESVILLE WATER UTILITY WI1540127 Wisconsin Community 64,415
WEST ALLIS WATERWORKS WI2410595 Wisconsin Community 63,240
OSHKOSH WATERWORKS WI4710457 Wisconsin Community 63,000
LA CROSSE WATERWORKS WI6320309 Wisconsin Community 53,000
MAYFAIR MALL WI2410926 Wisconsin Non-Transient Non-Community 50,500
SHEBOYGAN WATER UTILITIES WI4600354 Wisconsin Community 49,931
WAUWATOSA WATERWORKS WI2410596 Wisconsin Community 49,064
FOND DU LAC WATERWORKS WI4200469 Wisconsin Community 44,303
WAUSAU WATERWORKS WI7370102 Wisconsin Community 39,994
BELOIT CITY OF WI1540112 Wisconsin Community 36,677
NORTH SHORE WATER COMMISSION WI2413515 Wisconsin Community 35,598
MANITOWOC WATERWORKS WI4360364 Wisconsin Community 34,500
SUN PRAIRIE UTILITIES WI1130258 Wisconsin Community 33,966
OAK CREEK WATERWORKS WI2410172 Wisconsin Community 32,104
WEST BEND WATERWORKS WI2670120 Wisconsin Community 31,752
BROOKFIELD WATER UTILITY WI2680253 Wisconsin Community 29,070
NEW BERLIN WATER UTILITY WI2680217 Wisconsin Community 27,899
NEENAH WATERWORKS WI4710348 Wisconsin Community 27,506
STEVENS POINT WATERWORKS WI7500141 Wisconsin Community 26,717
SUPERIOR WATER LIGHT & POWER COMPANY WI8160147 Wisconsin Community 26,084
DE PERE WATERWORKS SA 1 WI4050453 Wisconsin Community 25,660
FITCHBURG UTILITY DIST 1 WI1130231 Wisconsin Community 24,500
WATERTOWN WATERWORKS WI1280044 Wisconsin Community 23,945
MIDDLETON WATERWORKS WI1130242 Wisconsin Community 23,868
MENOMONEE FALLS WW - SURFACE WATER WI2680082 Wisconsin Community 23,867
FRANKLIN WATER UTILITY WI2410563 Wisconsin Community 22,500
CALEDONIA WATER UTILITY - VILLAGE OF WI2520184 Wisconsin Community 21,819
GRAND CHUTE TN SAN DIST 1 WI4450429 Wisconsin Community 21,583
SOUTH MILWAUKEE WATERWORKS WI2410144 Wisconsin Community 21,340
HOWARD WATERWORKS WI4050468 Wisconsin Community 21,133
GERMANTOWN WATER UTILITY WI2670105 Wisconsin Community 20,027
WIS RAPIDS WATER WORKS & LIGHTING COMM WI7720108 Wisconsin Community 20,000
MARSHFIELD UTILITIES WI7720165 Wisconsin Community 18,815
CUDAHY WATERWORKS WI2410169 Wisconsin Community 18,659
ONALASKA WATERWORKS WI6320327 Wisconsin Community 18,000
FOX CROSSING UTILITIES WEST WI4710358 Wisconsin Community 18,000
ASHWAUBENON WATERWORKS WI4050456 Wisconsin Community 17,730
HUDSON WATERWORKS WI6560087 Wisconsin Community 17,635
KAUKAUNA UTILITIES WI4450336 Wisconsin Community 17,493
BELLEVUE WATERWORKS WI4050459 Wisconsin Community 16,715
BEAVER DAM WATER UTILITY WI1140059 Wisconsin Community 16,200
WESTON MUNICIPAL UTILITIES WI7370163 Wisconsin Community 16,000