Skip to content
AquaCensus

Adams County, Wisconsin — public water systems

At a glance

202 active public water systems are filed under Adams County, Wisconsin in EPA's SDWIS records, together reporting 24,041 people served. The largest is Rome Water Utility, which reports serving 2,775 people. 11 are community water systems serving people where they live; the other 191 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

202

Population served

24K

Community systems

11

Groundwater share

100%

How does Adams County compare with other Wisconsin counties?

Adams County has the 15th-most active public water systems among the 90 counties listed for active Wisconsin systems in EPA records; among the 74 with 3 or more systems, the median has 140. Its systems report 24,041 people served in total, the 43rd-largest county figure in the state and 0.5% of the statewide total. The average system here reports serving 119 people, well below the Wisconsin average of 469. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Adams County's drinking water come from?

By primary water source, Adams County's active systems draw on groundwater (201, 100%) and purchased groundwater (1, 0.5%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 99% and 0.6% across Wisconsin. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Rome Water Utility, draws primarily on groundwater.

What kinds of water systems operate in Adams County?

Adams County's active systems break down as 11 community systems (5.4%), 4 non-transient non-community systems (2%) and 187 transient non-community systems (93%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (91%), local government (6.4%), state government (1.5%) and federal government (1%).

The 50 largest water systems in Adams County

🔒 Create a free account to export CSV
Active public water systems in Adams County, Wisconsin
#Water systemCountyPopulation servedTypeSource
1Rome Water UtilityAdams2,775CommunityGroundwater
2Adams WaterworksAdams1,847CommunityGroundwater
3Federal Correctional InstitutionAdams1,550CommunityGroundwater
4Friendship WaterworksAdams781CommunityPurchased groundwater
5Emrick Lake Cmpgrnd Main WellAdams750Transient non-communityGroundwater
6Emrick Lake Cmpgrnd East SitesAdams750Transient non-communityGroundwater
7Emrick Lake Cmpgrnd CabinsAdams750Transient non-communityGroundwater
8Emrick Lake Cmpgrnd HandpumpAdams750Transient non-communityGroundwater
9Emrick Lake Cmpgrnd Reserve AreaAdams750Transient non-communityGroundwater
10Emrick Lake Cmpgrnd East Shower HouseAdams750Transient non-communityGroundwater
11Emrick Lake Cmpgrnd OfficeAdams750Transient non-communityGroundwater
12Sand Valley Golf Resort Hole 11Adams500Transient non-communityGroundwater
13Petenwell Co Park 10-West Pump HouseAdams410Transient non-communityGroundwater
14Petenwell Co Park 9Adams405Transient non-communityGroundwater
15Sand Valley Golf Resort Lido Pro Shelter & BathAdams400Transient non-communityGroundwater
16Sand Valley Golf Resort Mammoth Dunes Hole 15Adams400Transient non-communityGroundwater
17Petenwell Co Park Atv CampgroundAdams400Transient non-communityGroundwater
18Sand Valley Golf Resort Mammoth Dunes TurnstandAdams400Transient non-communityGroundwater
19Sand Valley Golf Resort Lido Pro ShopAdams400Transient non-communityGroundwater
20Castle Rock Co Park 2-ShopAdams210Transient non-communityGroundwater
21Holiday Shores Cmpgd 6 EastAdams205Transient non-communityGroundwater
22Petenwell Co Park 11Adams205Transient non-communityGroundwater
23Westwind EstatesAdams160CommunityGroundwater
24Four Seasons Mini MartAdams154Transient non-communityGroundwater
25Kamado Flo at the Swan Barn DoorAdams153Transient non-communityGroundwater
26Wagon Wheel CampgroundAdams152Transient non-communityGroundwater
27Stuffs RestaurantAdams150Transient non-communityGroundwater
28Blue Lake Community LLCAdams102Transient non-communityGroundwater
29Dollar General #24419Adams100Transient non-communityGroundwater
30Boomers Pub Inc.Adams100Transient non-communityGroundwater
31Dellwood PavilionAdams100Transient non-communityGroundwater
32Cold Water Canyon Shore LandingAdams100Transient non-communityGroundwater
33Ponderosa Pines - Campground 2Adams90Transient non-communityGroundwater
34Trinity Lutheran Ch Ed BldgAdams85Transient non-communityGroundwater
35Ponderosa Pines - BathhouseAdams85Transient non-communityGroundwater
36Moundview Golf CourseAdams78Transient non-communityGroundwater
37Dells Club Condo Assoc 1Adams75CommunityGroundwater
38Sunset Condominiums - Condo 17Adams75Transient non-communityGroundwater
39Sunset Condominiums - Condo 22Adams75Transient non-communityGroundwater
40Sunset Condominiums - Condo 21Adams75Transient non-communityGroundwater
41Sunset Condominiums - Condo 16Adams75Transient non-communityGroundwater
42Sunset Condominiums - Condo 20Adams75Transient non-communityGroundwater
43Sunset Condominiums - Condo 14Adams75Transient non-communityGroundwater
44Sunset Condominiums - Condo 12Adams75Transient non-communityGroundwater
45Sunset Condominiums - Condo 11Adams75Transient non-communityGroundwater
46Sunset Condominiums - Condo 10Adams75Transient non-communityGroundwater
47Sunset Condominiums - Condo 9Adams75Transient non-communityGroundwater
48Pineland Camping Park 1 PoolAdams75Transient non-communityGroundwater
49Pineland Camping Park 3 Site 125Adams75Transient non-communityGroundwater
50Pineland Camping Park 4 Pumphouse BpAdams75Transient non-communityGroundwater

All other water systems in Adams County (152)

The remaining active systems filed under Adams County, largest first, with the population each reports serving.

Adams County water systems: frequently asked questions

How many public water systems are in Adams County, Wisconsin?

EPA's SDWIS records file 202 active public water systems under Adams County, Wisconsin: 11 community systems (5.4%), 4 non-transient non-community systems (2%) and 187 transient non-community systems (93%).

Who supplies drinking water in Adams County, WI?

The largest community water systems filed under Adams County are Rome Water Utility (2,775 people served), Adams Waterworks (1,847 people served) and Federal Correctional Institution (1,550 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does Adams County's drinking water come from groundwater or surface water?

Of the 202 active public water systems in Adams County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Rome Water Utility, uses groundwater.

Where can I find a water quality report for Adams County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 11 community systems are filed under Adams County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in Adams County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More Wisconsin water systems

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Public water systems in Adams County, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/adams (data as of October 1, 2026).