Wisconsin water providers — page 2

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.

• Delavan WaterworksWI2650113 · CWS · Population served: 9,028
• Rice Lake WaterworksWI6030138 · CWS · Population served: 9,012
• Plymouth UtilitiesWI4600446 · CWS · Population served: 8,964
• Sheboygan Falls UtilitiesWI4600455 · CWS · Population served: 8,687
• Pewaukee City Water And Sewer UtilityWI2680214 · CWS · Population served: 8,671
• Monona WaterworksWI1130245 · CWS · Population served: 8,624
• Rhinelander Water & WastewaterWI7440126 · CWS · Population served: 8,234
• Mukwonago WaterworksWI2680209 · CWS · Population served: 8,190
• Pewaukee Village WaterworksWI2680229 · CWS · Population served: 8,166
• Muskego Water UtilityWI2681741 · CWS · Population served: 8,150
• Waupun UtilitiesWI1140131 · CWS · Population served: 8,056
• Ashland Water UtilityWI8020373 · CWS · Population served: 8,000
• Jefferson WaterworksWI1280104 · CWS · Population served: 7,926
• Jackson WaterworksWI2670111 · CWS · Population served: 7,844
• Antigo WaterworksWI7340086 · CWS · Population served: 7,780
• Mt Horeb WaterworksWI1130247 · CWS · Population served: 7,756
• Ripon Water UtilityWI4200476 · CWS · Population served: 7,716
• Kimberly WaterworksWI4450342 · CWS · Population served: 7,608
• Ledgeview Tn Sanitary Dist 2WI4051418 · CWS · Population served: 7,602
• New London WaterworksWI4690398 · CWS · Population served: 7,187
• Lake Geneva Utility CommissionWI2650066 · CWS · Population served: 7,107
• Kronenwetter Water & Sewer UtilityWI7371700 · CWS · Population served: 6,931
• Fox Point WaterworksWI2410584 · CWS · Population served: 6,808
• Village of Lake Hallie WaterworksWI6090849 · CWS · Population served: 6,701
• Town of Brookfield San Dist 4WI2680239 · CWS · Population served: 6,419
• Rib Mountain Water UtilityWI7370660 · CWS · Population served: 6,398
• Lake Mills WaterworksWI1280108 · CWS · Population served: 6,211
• Waupaca WaterworksWI4690402 · CWS · Population served: 6,062
• Prairie Du Chien WaterworksWI6120250 · CWS · Population served: 6,005
• Evansville WaterworksWI1540047 · CWS · Population served: 5,703
• Slinger Water UtilityWI2670116 · CWS · Population served: 5,659
• Milton WaterworksWI1540130 · CWS · Population served: 5,588
• Berlin WaterworksWI4240216 · CWS · Population served: 5,524
• Edgerton WaterworksWI1540119 · CWS · Population served: 5,512
• Harrison Utilities - Fka Waverly SdWI4080076 · CWS · Population served: 5,500
• North Fond Du Lac WaterworksWI4200405 · CWS · Population served: 5,414
• Lawrence WaterworksWI4051625 · CWS · Population served: 5,398
• Waterford WaterworksWI2520202 · CWS · Population served: 5,368
• Sand Pillow055295011 · CWS · Population served: 5,230
• Columbus UtilitiesWI1110038 · CWS · Population served: 5,173
• Mayville WaterworksWI1140057 · CWS · Population served: 5,112
• Richland Center WaterworksWI1530068 · CWS · Population served: 5,100
• East Troy WaterworksWI2650123 · CWS · Population served: 5,054
• West Salem WaterworksWI6320334 · CWS · Population served: 5,045
• Shawano Lk San Dist 1WI4590457 · CWS · Population served: 4,950
• Union Grove WaterworksWI2520200 · CWS · Population served: 4,900
• Suamico WaterworksWI4051031 · CWS · Population served: 4,697
• Clintonville UtilitiesWI4690391 · CWS · Population served: 4,635
• Windsor Water Utility SouthWI1130267 · CWS · Population served: 4,607
• Sheboygan Tn WaterworksWI4600403 · CWS · Population served: 4,596
• Dodgeville WaterworksWI1250079 · CWS · Population served: 4,583
• Oconto WaterworksWI4430495 · CWS · Population served: 4,583
• Mauston WaterworksWI7290129 · CWS · Population served: 4,456
• Baldwin WaterworksWI6560119 · CWS · Population served: 4,440
• Oneida #1 Or Site #1055295703 · CWS · Population served: 4,393
• Viroqua WaterworksWI6630263 · CWS · Population served: 4,362
• Medford WaterworksWI8610125 · CWS · Population served: 4,318
• Kewaskum WaterworksWI2670112 · CWS · Population served: 4,309
• Saukville WaterworksWI2460134 · CWS · Population served: 4,268
• Prescott WaterworksWI6480243 · CWS · Population served: 4,258
• Chilton WaterworksWI4080222 · CWS · Population served: 4,191
• Cross Plains WaterworksWI1130219 · CWS · Population served: 4,100
• Village of BloomfieldWI2651469 · CWS · Population served: 4,071
• Pulaski WaterworksWI4050355 · CWS · Population served: 4,040
• Prairie Du Sac WaterworksWI1570100 · CWS · Population served: 4,006
• Keshena055295508 · CWS · Population served: 3,960
• Algoma Tn Sanitary Dist 1WI4711611 · CWS · Population served: 3,935
• Kiel WaterworksWI4360427 · CWS · Population served: 3,932
• Lancaster WaterworksWI1220107 · CWS · Population served: 3,907
• Marshall WaterworksWI1130237 · CWS · Population served: 3,862
• Wrightstown WaterworksWI4050464 · CWS · Population served: 3,815
• Arcadia WaterworksWI6620319 · CWS · Population served: 3,737
• Waupun Correctional InstWI1140142 · CWS · Population served: 3,706
• Horicon WaterworksWI1140146 · CWS · Population served: 3,682
• Bloomer WaterworksWI6090448 · CWS · Population served: 3,680
• Hobart Waterworks S A 1WI4051698 · CWS · Population served: 3,670
• Omro WaterworksWI4710357 · CWS · Population served: 3,629
• Combined Locks WaterworksWI4450409 · CWS · Population served: 3,609
• Black River Falls WaterworksWI6270244 · CWS · Population served: 3,608
• Seymour WaterworksWI4450337 · CWS · Population served: 3,601
• Waterloo WaterworksWI1280115 · CWS · Population served: 3,520
• Sauk City WaterworksWI1570105 · CWS · Population served: 3,518
• Stanley WaterworksWI6090462 · CWS · Population served: 3,500
• Barron Light & Water DeptWI6030125 · CWS · Population served: 3,423
• Peshtigo WaterworksWI4380442 · CWS · Population served: 3,420
• Mosinee WaterworksWI7370159 · CWS · Population served: 3,406
• Somerset WaterworksWI6560137 · CWS · Population served: 3,334
• Johnson Creek WaterworksWI1280107 · CWS · Population served: 3,318
• Ellsworth WaterworksWI6480239 · CWS · Population served: 3,304
• Brillion WaterworksWI4080221 · CWS · Population served: 3,262
• Freedom Sanitary DistrictWI4451607 · CWS · Population served: 3,260
• Boscobel WaterworksWI1220089 · CWS · Population served: 3,237
• Wisconsin Dells WaterworksWI1110113 · CWS · Population served: 3,232
• Algoma WaterworksWI4310280 · CWS · Population served: 3,219
• Brodhead WaterworksWI1230072 · CWS · Population served: 3,216
• Rothschild WaterworksWI7370161 · CWS · Population served: 3,190
• Ladysmith WaterworksWI8550131 · CWS · Population served: 3,184
• Tomahawk WaterworksWI7350127 · CWS · Population served: 3,180
• Lodi WaterworksWI1110100 · CWS · Population served: 3,146
• Sherwood WaterworksWI4080271 · CWS · Population served: 3,114