Skip to content
AquaCensus

Lafayette County, Wisconsin — public water systems

At a glance

39 active public water systems are filed under Lafayette County, Wisconsin in EPA's SDWIS records, together reporting 11,066 people served. The largest is Darlington Waterworks, which reports serving 2,235 people. 9 are community water systems serving people where they live; the other 30 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

39

Population served

11.1K

Community systems

9

Groundwater share

100%

How does Lafayette County compare with other Wisconsin counties?

Lafayette County has the 69th-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 11,066 people served in total, the 60th-largest county figure in the state and 0.2% of the statewide total. The average system here reports serving 284 people, about 39% 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 Lafayette County's drinking water come from?

By primary water source, Lafayette County's active systems draw on groundwater (39, 100%). 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, Darlington Waterworks, draws primarily on groundwater.

What kinds of water systems operate in Lafayette County?

Lafayette County's active systems break down as 9 community systems (23%), 2 non-transient non-community systems (5.1%) and 28 transient non-community systems (72%). 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 (56%), local government (26%) and state government (18%).

Water systems in Lafayette County

🔒 Create a free account to export CSV
Active public water systems in Lafayette County, Wisconsin
#Water systemCountyPopulation servedTypeSource
1Darlington WaterworksLafayette2,235CommunityGroundwater
2Shullsburg WaterworksLafayette1,222CommunityGroundwater
3Belmont WaterworksLafayette991CommunityGroundwater
4Benton WaterworksLafayette976CommunityGroundwater
5Argyle WaterworksLafayette823CommunityGroundwater
6Blanchardville WaterworksLafayette810CommunityGroundwater
7Lake Joy Showers and LaundryLafayette500Transient non-communityGroundwater
8South Wayne WaterworksLafayette478CommunityGroundwater
9Wi Dnr Yellowstone CampgroundLafayette285Transient non-communityGroundwater
10Wi Dnr Yellowstone New Shower BuildingLafayette285Transient non-communityGroundwater
11Gratiot WaterworksLafayette224CommunityGroundwater
12Cole Acres Country ClubLafayette210Transient non-communityGroundwater
13Wi Dnr Yellowstone East Fts WellLafayette162Transient non-communityGroundwater
14Backyard CampgroundLafayette159Transient non-communityGroundwater
15Cornerstone Lutheran ChurchLafayette150Transient non-communityGroundwater
16V & V Supremo - Chula Vista CheeseLafayette130Non-transient non-communityGroundwater
17Yellowstone Golf CourseLafayette110Transient non-communityGroundwater
18Yellowstone Lake ChaletLafayette104Transient non-communityGroundwater
19Wi Dnr Yellowstone Dairy RestaurantLafayette104Transient non-communityGroundwater
20Roelli Cheese CompanyLafayette102Transient non-communityGroundwater
21Belmont Sales Barn Rls LLCLafayette101Transient non-communityGroundwater
22Reds Supper ClubLafayette100Transient non-communityGroundwater
23Wiota Sanitary DistrictLafayette98CommunityGroundwater
24Cork Down Saloon and CampgroundLafayette82Transient non-communityGroundwater
25Pleasant View Primitive Methodist ChurchLafayette60Transient non-communityGroundwater
26Yellowstone Lutheran ChurchLafayette60Transient non-communityGroundwater
27Darlington Golf and Country ClubLafayette58Transient non-communityGroundwater
28Wi Dnr Yellowstone Main Use AreaLafayette56Transient non-communityGroundwater
29Lake Joy House and CampgroundLafayette47Transient non-communityGroundwater
30Bank of New Glarus - GratiotLafayette47Transient non-communityGroundwater
31Rut-Rohs Fayette SaloonLafayette46Transient non-communityGroundwater
32Blackhawk Memorial ParkLafayette45Transient non-communityGroundwater
33Wi Dnr Yellowstone OfficeLafayette33Transient non-communityGroundwater
34Lead Mine TavernLafayette32Transient non-communityGroundwater
35Darlington Ridge FarmsLafayette32Non-transient non-communityGroundwater
36Wi Dnr Yellowstone Below DamLafayette30Transient non-communityGroundwater
37New Diggings General Store & InnLafayette27Transient non-communityGroundwater
38Dollar General Argyle #20120Lafayette27Transient non-communityGroundwater
39Lamont United Methodist ChLafayette25Transient non-communityGroundwater

Lafayette County water systems: frequently asked questions

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

EPA's SDWIS records file 39 active public water systems under Lafayette County, Wisconsin: 9 community systems (23%), 2 non-transient non-community systems (5.1%) and 28 transient non-community systems (72%).

Who supplies drinking water in Lafayette County, WI?

The largest community water systems filed under Lafayette County are Darlington Waterworks (2,235 people served), Shullsburg Waterworks (1,222 people served) and Belmont Waterworks (991 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 Lafayette County's drinking water come from groundwater or surface water?

Of the 39 active public water systems in Lafayette County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Darlington Waterworks, uses groundwater.

Where can I find a water quality report for Lafayette 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. 9 community systems are filed under Lafayette 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 Lafayette 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 Lafayette County, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/lafayette (data as of October 1, 2026).