Watonwan County, Minnesota — public water systems
At a glance
12 active public water systems are filed under Watonwan County, Minnesota in EPA's SDWIS records, together reporting 8,336 people served. The largest is Saint James, which reports serving 4,611 people. 8 are community water systems serving people where they live; the other 4 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
12
Population served
8.3K
Community systems
8
Groundwater share
100%
How does Watonwan County compare with other Minnesota counties?
Watonwan County has the 82nd-most active public water systems among the 94 counties listed for active Minnesota systems in EPA records; among the 87 with 3 or more systems, the median has 49. Its systems report 8,336 people served in total, the 68th-largest county figure in the state and 0.2% of the statewide total. The average system here reports serving 695 people, about 15% below the Minnesota average of 820. 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 Watonwan County's drinking water come from?
By primary water source, Watonwan County's active systems draw on purchased groundwater (6, 50%) and groundwater (6, 50%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 98% and 1.5% across Minnesota. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. The county's largest system, Saint James, draws primarily on groundwater.
What kinds of water systems operate in Watonwan County?
Watonwan County's active systems break down as 8 community systems (67%) and 4 transient non-community systems (33%). 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 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 local government (75%) and private (25%).
Water systems in Watonwan County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Saint James | Watonwan | 4,611 | Community | Groundwater |
| 2 | Madelia | Watonwan | 2,319 | Community | Groundwater |
| 3 | Butterfield | Watonwan | 586 | Community | Purchased groundwater |
| 4 | Lewisville | Watonwan | 225 | Community | Purchased groundwater |
| 5 | Ormsby | Watonwan | 129 | Community | Purchased groundwater |
| 6 | Odin | Watonwan | 109 | Community | Purchased groundwater |
| 7 | St. James Golf Course/River'S Edge Grill | Watonwan | 100 | Transient non-community | Groundwater |
| 8 | Lasalle | Watonwan | 90 | Community | Purchased groundwater |
| 9 | Darfur | Watonwan | 87 | Community | Purchased groundwater |
| 10 | Crystal Valley-Madelia Hwy 60 | Watonwan | 30 | Transient non-community | Groundwater |
| 11 | Sands Country Cove Campground | Watonwan | 25 | Transient non-community | Groundwater |
| 12 | Watonwan County Eagles Nest Park | Watonwan | 25 | Transient non-community | Groundwater |
Watonwan County water systems: frequently asked questions
How many public water systems are in Watonwan County, Minnesota?
EPA's SDWIS records file 12 active public water systems under Watonwan County, Minnesota: 8 community systems (67%) and 4 transient non-community systems (33%).
Who supplies drinking water in Watonwan County, MN?
The largest community water systems filed under Watonwan County are Saint James (4,611 people served), Madelia (2,319 people served) and Butterfield (586 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 Watonwan County's drinking water come from groundwater or surface water?
Of the 12 active public water systems in Watonwan County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Saint James, uses groundwater.
Where can I find a water quality report for Watonwan 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. 8 community systems are filed under Watonwan 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 Watonwan 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 Minnesota water systems
- All Minnesota public water systems· 6,465 active
- Yellow Medicine County· 13 systems
- Pipestone County· 12 systems
- Red Lake County· 12 systems
- Traverse County· 12 systems
- Wilkin County· 12 systems
- Cottonwood County· 11 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 Watonwan County, Minnesota”, https://aquacensus.com/water-systems/minnesota/watonwan (data as of October 1, 2026).