Cottonwood County, Minnesota — public water systems
At a glance
11 active public water systems are filed under Cottonwood County, Minnesota in EPA's SDWIS records, together reporting 14,164 people served. The largest is Red Rock Rural Water System, which reports serving 5,840 people. 9 are community water systems serving people where they live; the other 2 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
11
Population served
14.2K
Community systems
9
Groundwater share
100%
How does Cottonwood County compare with other Minnesota counties?
Cottonwood County has the 84th-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 14,164 people served in total, the 54th-largest county figure in the state and 0.3% of the statewide total. The average system here reports serving 1,288 people, about 57% above 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 Cottonwood County's drinking water come from?
By primary water source, Cottonwood County's active systems draw on groundwater (7, 64%) and purchased groundwater (4, 36%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 98% and 1.5% across Minnesota. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Red Rock Rural Water System, draws primarily on groundwater.
What kinds of water systems operate in Cottonwood County?
Cottonwood County's active systems break down as 9 community systems (82%) and 2 transient non-community systems (18%). 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 (73%) and private (27%).
Water systems in Cottonwood County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Red Rock Rural Water System | Cottonwood | 5,840 | Community | Groundwater |
| 2 | Windom | Cottonwood | 4,646 | Community | Groundwater |
| 3 | Mountain Lake | Cottonwood | 2,018 | Community | Groundwater |
| 4 | Westbrook | Cottonwood | 785 | Community | Groundwater |
| 5 | Jeffers | Cottonwood | 369 | Community | Purchased groundwater |
| 6 | Storden | Cottonwood | 215 | Community | Purchased groundwater |
| 7 | Bingham Lake | Cottonwood | 128 | Community | Purchased groundwater |
| 8 | Delft | Cottonwood | 58 | Community | Purchased groundwater |
| 9 | Neuhof Hutterian Brethren | Cottonwood | 55 | Community | Groundwater |
| 10 | Shalom Hill Farm | Cottonwood | 25 | Transient non-community | Groundwater |
| 11 | Amo Lutheran Church | Cottonwood | 25 | Transient non-community | Groundwater |
Cottonwood County water systems: frequently asked questions
How many public water systems are in Cottonwood County, Minnesota?
EPA's SDWIS records file 11 active public water systems under Cottonwood County, Minnesota: 9 community systems (82%) and 2 transient non-community systems (18%).
Who supplies drinking water in Cottonwood County, MN?
The largest community water systems filed under Cottonwood County are Red Rock Rural Water System (5,840 people served), Windom (4,646 people served) and Mountain Lake (2,018 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 Cottonwood County's drinking water come from groundwater or surface water?
Of the 11 active public water systems in Cottonwood County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Red Rock Rural Water System, uses groundwater.
Where can I find a water quality report for Cottonwood 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 Cottonwood 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 Cottonwood 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
- Red Lake County· 12 systems
- Traverse County· 12 systems
- Watonwan County· 12 systems
- Wilkin County· 12 systems
- Kittson County· 8 systems
- Lincoln County· 8 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 Cottonwood County, Minnesota”, https://aquacensus.com/water-systems/minnesota/cottonwood (data as of October 1, 2026).