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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

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Active public water systems in Watonwan County, Minnesota
#Water systemCountyPopulation servedTypeSource
1Saint JamesWatonwan4,611CommunityGroundwater
2MadeliaWatonwan2,319CommunityGroundwater
3ButterfieldWatonwan586CommunityPurchased groundwater
4LewisvilleWatonwan225CommunityPurchased groundwater
5OrmsbyWatonwan129CommunityPurchased groundwater
6OdinWatonwan109CommunityPurchased groundwater
7St. James Golf Course/River'S Edge GrillWatonwan100Transient non-communityGroundwater
8LasalleWatonwan90CommunityPurchased groundwater
9DarfurWatonwan87CommunityPurchased groundwater
10Crystal Valley-Madelia Hwy 60Watonwan30Transient non-communityGroundwater
11Sands Country Cove CampgroundWatonwan25Transient non-communityGroundwater
12Watonwan County Eagles Nest ParkWatonwan25Transient non-communityGroundwater

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

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).