Wisconsin water providers — page 3

Find published drinking-water records, providers, and official agency resources for Wisconsin. Review sources, sample dates, and coverage.

Official drinking-water resources

• Wisconsin Department of Natural Resources - Drinking Water and Groundwater Program
• Wisconsin Drinking Water System Portal

The responsible agency may differ for tribal systems. Record availability and sample dates vary by provider.

Community systems appear first. Sort: Population served · A–Z

Public water systems

11,023 systems in the imported directory. Includes community systems, schools, workplaces, and other public systems.

• Oostburg WaterworksWI4600445 · CWS · Population served: 3,110
• Lake Como Sanitary Dist 1WI2651536 · CWS · Population served: 3,038
• Dry Town055295310 · CWS · Population served: 3,030
• Hortonville Water UtilityWI4450411 · CWS · Population served: 3,028
• New Holstein WaterworksWI4080270 · CWS · Population served: 3,012
• Park Falls WaterworksWI8510130 · CWS · Population served: 2,993
• Amery WaterworksWI6490328 · CWS · Population served: 2,962
• Lac Du Flambeau055295401 · CWS · Population served: 2,962
• Lake Delton WaterworksWI1570664 · CWS · Population served: 2,914
• Oconto Falls WaterworksWI4430496 · CWS · Population served: 2,892
• Kewaunee WaterworksWI4310281 · CWS · Population served: 2,848
• South-Central Water System055295003 · CWS · Population served: 2,805
• Mendota Mental Health InstWI1130235 · CWS · Population served: 2,787
• Rome Water UtilityWI7010108 · CWS · Population served: 2,775
• Genoa City WaterworksWI2650058 · CWS · Population served: 2,766
• Luxemburg WaterworksWI4310282 · CWS · Population served: 2,737
• Belleville WaterworksWI1130209 · CWS · Population served: 2,712
• Lomira WaterworksWI1140151 · CWS · Population served: 2,701
• Brockway Sanitary Dist 1WI6270299 · CWS · Population served: 2,692
• Denmark WaterworksWI4050351 · CWS · Population served: 2,684
• Osceola WaterworksWI6490341 · CWS · Population served: 2,680
• Mondovi WaterworksWI6060193 · CWS · Population served: 2,667
• Spooner WaterworksWI8660305 · CWS · Population served: 2,653
• Juneau WaterworksWI1140058 · CWS · Population served: 2,627
• Williams Bay WaterworksWI2650060 · CWS · Population served: 2,601
• Hayward Water UtilityWI8580532 · CWS · Population served: 2,552
• New Lisbon WaterworksWI7290132 · CWS · Population served: 2,526
• Poynette WaterworksWI1110037 · CWS · Population served: 2,520
• Deerfield WaterworksWI1130223 · CWS · Population served: 2,510
• Fennimore WaterworksWI1220096 · CWS · Population served: 2,507
• Abbotsford WaterworksWI7370148 · CWS · Population served: 2,502
• Winneconne WaterworksWI4710354 · CWS · Population served: 2,502
• Belgium WaterworksWI2460107 · CWS · Population served: 2,493
• Mineral Point WaterworksWI1250084 · CWS · Population served: 2,487
• Westby WaterworksWI6630267 · CWS · Population served: 2,400
• Nekoosa WaterworksWI7720169 · CWS · Population served: 2,394
• Neillsville WaterworksWI6100330 · CWS · Population served: 2,384
• Lakeland Sanitary Dist 1WI7440116 · CWS · Population served: 2,381
• Dousman Water UtilityWI2680197 · CWS · Population served: 2,350
• New Glarus WaterworksWI1230084 · CWS · Population served: 2,348
• Cumberland WaterworksWI6030132 · CWS · Population served: 2,311
• Walworth WaterworksWI2650149 · CWS · Population served: 2,304
• Washburn WaterworksWI8040132 · CWS · Population served: 2,280
• Wautoma Water DeptWI4700718 · CWS · Population served: 2,280
• Fredonia WaterworksWI2460109 · CWS · Population served: 2,279
• Kohler WaterworksWI4600444 · CWS · Population served: 2,271
• Geneva National Community ServicesWI2650907 · CWS · Population served: 2,250
• Darlington WaterworksWI1330073 · CWS · Population served: 2,235
• Cedar Grove WaterworksWI4600437 · CWS · Population served: 2,213
• Schofield WaterworksWI7370162 · CWS · Population served: 2,205
• Butler WaterworksWI2680191 · CWS · Population served: 2,181
• Pardeeville WaterworksWI1110049 · CWS · Population served: 2,151
• Cuba City WaterworksWI1220092 · CWS · Population served: 2,141
• Clinton WaterworksWI1540114 · CWS · Population served: 2,119
• Prairie Village Water TrustWI2680277 · CWS · Population served: 2,100
• Red Cliff North055295802 · CWS · Population served: 2,080
• St Croix Falls WaterworksWI6490343 · CWS · Population served: 2,079
• Redgranite WaterworksWI4700269 · CWS · Population served: 2,019
• Cex' Ha Ci055295015 · CWS · Population served: 2,002
• Crandon WaterworksWI7210107 · CWS · Population served: 1,958
• Eagle WaterworksWI2680198 · CWS · Population served: 1,950
• Harmony Grove San DistWI1110101 · CWS · Population served: 1,950
• Chetek WaterworksWI6030129 · CWS · Population served: 1,931
• Somers Water UtilityWI2301421 · CWS · Population served: 1,930
• Trempealeau WaterworksWI6620332 · CWS · Population served: 1,888
• Hammond WaterworksWI6560121 · CWS · Population served: 1,884
• Scott Water Utility DistWI4050071 · CWS · Population served: 1,875
• Roberts WaterworksWI6560134 · CWS · Population served: 1,872
• Durand WaterworksWI6470107 · CWS · Population served: 1,868
• Port Edwards Water UtilityWI7720113 · CWS · Population served: 1,866
• Fox Lake Correctional InstitutionWI1140144 · CWS · Population served: 1,850
• Spencer WaterworksWI7370108 · CWS · Population served: 1,848
• Adams WaterworksWI7010107 · CWS · Population served: 1,847
• Fontana Water UtilityWI2650128 · CWS · Population served: 1,839
• New Odanah055295102 · CWS · Population served: 1,839
• Colby WaterworksWI7370169 · CWS · Population served: 1,829
• Campbellsport WaterworksWI4200461 · CWS · Population served: 1,825
• Weyauwega WaterworksWI4690403 · CWS · Population served: 1,820
• Whitehall WaterworksWI6620275 · CWS · Population served: 1,820
• Wind Point Water DeptWI2520191 · CWS · Population served: 1,804
• Randolph Water DeptWI1110125 · CWS · Population served: 1,800
• Menomonee Falls Ww - GroundwaterWI2685747 · CWS · Population served: 1,796
• Fall River WaterworksWI1110098 · CWS · Population served: 1,793
• Cameron WaterworksWI6030127 · CWS · Population served: 1,787
• Palmyra WaterworksWI1280112 · CWS · Population served: 1,756
• Mazomanie WaterworksWI1130239 · CWS · Population served: 1,744
• Whiting WaterworksWI7500136 · CWS · Population served: 1,743
• Osseo WaterworksWI6620328 · CWS · Population served: 1,701
• Marathon City WaterworksWI7370151 · CWS · Population served: 1,695
• Galesville WaterworksWI6620271 · CWS · Population served: 1,679
• Shorewood Hills WaterworksWI1130236 · CWS · Population served: 1,670
• Stratford WaterworksWI7370168 · CWS · Population served: 1,643
• Cambridge Water & Sewer UtilityWI1130074 · CWS · Population served: 1,638
• Thorp WaterworksWI6100337 · CWS · Population served: 1,636
• Spring Green WaterworksWI1570109 · CWS · Population served: 1,626
• Fox Lake WaterworksWI1140145 · CWS · Population served: 1,610
• Random Lake WaterworksWI4600355 · CWS · Population served: 1,594
• Darien WaterworksWI2650057 · CWS · Population served: 1,573
• Elkhart Lake WaterworksWI4600439 · CWS · Population served: 1,567
• Niagara WaterworksWI4380439 · CWS · Population served: 1,561