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| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Darlington Waterworks | Lafayette | 2,235 | Community | Groundwater |
| 2 | Shullsburg Waterworks | Lafayette | 1,222 | Community | Groundwater |
| 3 | Belmont Waterworks | Lafayette | 991 | Community | Groundwater |
| 4 | Benton Waterworks | Lafayette | 976 | Community | Groundwater |
| 5 | Argyle Waterworks | Lafayette | 823 | Community | Groundwater |
| 6 | Blanchardville Waterworks | Lafayette | 810 | Community | Groundwater |
| 7 | Lake Joy Showers and Laundry | Lafayette | 500 | Transient non-community | Groundwater |
| 8 | South Wayne Waterworks | Lafayette | 478 | Community | Groundwater |
| 9 | Wi Dnr Yellowstone Campground | Lafayette | 285 | Transient non-community | Groundwater |
| 10 | Wi Dnr Yellowstone New Shower Building | Lafayette | 285 | Transient non-community | Groundwater |
| 11 | Gratiot Waterworks | Lafayette | 224 | Community | Groundwater |
| 12 | Cole Acres Country Club | Lafayette | 210 | Transient non-community | Groundwater |
| 13 | Wi Dnr Yellowstone East Fts Well | Lafayette | 162 | Transient non-community | Groundwater |
| 14 | Backyard Campground | Lafayette | 159 | Transient non-community | Groundwater |
| 15 | Cornerstone Lutheran Church | Lafayette | 150 | Transient non-community | Groundwater |
| 16 | V & V Supremo - Chula Vista Cheese | Lafayette | 130 | Non-transient non-community | Groundwater |
| 17 | Yellowstone Golf Course | Lafayette | 110 | Transient non-community | Groundwater |
| 18 | Yellowstone Lake Chalet | Lafayette | 104 | Transient non-community | Groundwater |
| 19 | Wi Dnr Yellowstone Dairy Restaurant | Lafayette | 104 | Transient non-community | Groundwater |
| 20 | Roelli Cheese Company | Lafayette | 102 | Transient non-community | Groundwater |
| 21 | Belmont Sales Barn Rls LLC | Lafayette | 101 | Transient non-community | Groundwater |
| 22 | Reds Supper Club | Lafayette | 100 | Transient non-community | Groundwater |
| 23 | Wiota Sanitary District | Lafayette | 98 | Community | Groundwater |
| 24 | Cork Down Saloon and Campground | Lafayette | 82 | Transient non-community | Groundwater |
| 25 | Pleasant View Primitive Methodist Church | Lafayette | 60 | Transient non-community | Groundwater |
| 26 | Yellowstone Lutheran Church | Lafayette | 60 | Transient non-community | Groundwater |
| 27 | Darlington Golf and Country Club | Lafayette | 58 | Transient non-community | Groundwater |
| 28 | Wi Dnr Yellowstone Main Use Area | Lafayette | 56 | Transient non-community | Groundwater |
| 29 | Lake Joy House and Campground | Lafayette | 47 | Transient non-community | Groundwater |
| 30 | Bank of New Glarus - Gratiot | Lafayette | 47 | Transient non-community | Groundwater |
| 31 | Rut-Rohs Fayette Saloon | Lafayette | 46 | Transient non-community | Groundwater |
| 32 | Blackhawk Memorial Park | Lafayette | 45 | Transient non-community | Groundwater |
| 33 | Wi Dnr Yellowstone Office | Lafayette | 33 | Transient non-community | Groundwater |
| 34 | Lead Mine Tavern | Lafayette | 32 | Transient non-community | Groundwater |
| 35 | Darlington Ridge Farms | Lafayette | 32 | Non-transient non-community | Groundwater |
| 36 | Wi Dnr Yellowstone Below Dam | Lafayette | 30 | Transient non-community | Groundwater |
| 37 | New Diggings General Store & Inn | Lafayette | 27 | Transient non-community | Groundwater |
| 38 | Dollar General Argyle #20120 | Lafayette | 27 | Transient non-community | Groundwater |
| 39 | Lamont United Methodist Ch | Lafayette | 25 | Transient non-community | Groundwater |
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
- All Wisconsin public water systems· 11,056 active
- Green County· 52 systems
- Crawford County· 51 systems
- Calumet County· 50 systems
- Florence County· 45 systems
- Richland County· 38 systems
- Pepin County· 22 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
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).