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Winona County, Minnesota — public water systems

At a glance

77 active public water systems are filed under Winona County, Minnesota in EPA's SDWIS records, together reporting 51,279 people served. The largest is Winona, which reports serving 27,782 people. 12 are community water systems serving people where they live; the other 65 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

77

Population served

51.3K

Community systems

12

Groundwater share

100%

How does Winona County compare with other Minnesota counties?

Winona County has the 27th-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 51,279 people served in total, the 17th-largest county figure in the state and 1% of the statewide total. The average system here reports serving 666 people, about 19% 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 Winona County's drinking water come from?

By primary water source, Winona County's active systems draw on groundwater (77, 100%). 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, Winona, draws primarily on groundwater.

What kinds of water systems operate in Winona County?

Winona County's active systems break down as 12 community systems (16%), 6 non-transient non-community systems (7.8%) and 59 transient non-community systems (77%). 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 (71%), local government (17%), state government (9.1%) and federal government (2.6%).

The 50 largest water systems in Winona County

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Active public water systems in Winona County, Minnesota
#Water systemCountyPopulation servedTypeSource
1WinonaWinona27,782CommunityGroundwater
2GoodviewWinona4,158CommunityGroundwater
3Saint CharlesWinona3,825CommunityGroundwater
4Kwik Trip No. 497Winona1,600Transient non-communityGroundwater
5LewistonWinona1,512CommunityGroundwater
6Enterprise Rest Area MndotWinona1,220Transient non-communityGroundwater
7Dresbach Information Center MndotWinona1,058Transient non-communityGroundwater
8StocktonWinona697CommunityGroundwater
9RollingstoneWinona664CommunityGroundwater
10Whitewater State ParkWinona600Transient non-communityGroundwater
11Whitewater Travel Plaza, Inc..Winona600Transient non-communityGroundwater
12Lock and Dam No. 7Winona600Transient non-communityGroundwater
13Witoka TavernWinona500Transient non-communityGroundwater
14AlturaWinona493CommunityGroundwater
15Hidden Valley Mobile Home ParkWinona464CommunityGroundwater
16Grace Lutheran Church - RidgewayWinona400Transient non-communityGroundwater
17St. John'S Lutheran Church and SchoolWinona360Non-transient non-communityGroundwater
18St. John'S Lutheran ChurchWinona300Transient non-communityGroundwater
19UticaWinona293CommunityGroundwater
20Grace Lutheran ChurchWinona270Transient non-communityGroundwater
21Trinity Evangelical Lutheran ChurchWinona200Transient non-communityGroundwater
22St. Luke'S Evangelical Lutheran ChurchWinona200Transient non-communityGroundwater
23Lazy D CampgroundWinona150Transient non-communityGroundwater
24Berea Moravian ChurchWinona150Transient non-communityGroundwater
25Lock and Dam No. 5, Corps of EngineersWinona150Transient non-communityGroundwater
26Cedar Valley Golf CourseWinona150Transient non-communityGroundwater
27ElbaWinona146CommunityGroundwater
28Bass Camp ResortWinona135Transient non-communityGroundwater
29Immanuel Lutheran Church and SchoolWinona130Non-transient non-communityGroundwater
30Prairie Island CampgroundWinona120Transient non-communityGroundwater
31St. Paul'S Catholic ChurchWinona120Transient non-communityGroundwater
32Technical Die-Casting, Inc..Winona120Non-transient non-communityGroundwater
33Lewiston Church of the BrethrenWinona105Transient non-communityGroundwater
34Buck'S Bar - Minneiska MeatsWinona100Transient non-communityGroundwater
35Ridgeway Water AssociationWinona100Transient non-communityGroundwater
36First Evangelical Lutheran ChurchWinona100Transient non-communityGroundwater
37Green Terrace Mobile EstatesWinona86CommunityGroundwater
38Ridgeway Community SchoolWinona85Non-transient non-communityGroundwater
39Camp EverydayWinona80Transient non-communityGroundwater
40Twin Bluffs BarWinona75Transient non-communityGroundwater
41Riverside United Methodist ChurchWinona70Transient non-communityGroundwater
42Consolidated Energy CompanyWinona60Transient non-communityGroundwater
43Bethany Water CompanyWinona60CommunityGroundwater
44Z&A Country MarketWinona59Transient non-communityGroundwater
45Black Horse Bar & GrillWinona50Transient non-communityGroundwater
46Forest River Campground and MarinaWinona50Transient non-communityGroundwater
47Chs, St. CharlesWinona50Transient non-communityGroundwater
48Pete'S InnWinona50Transient non-communityGroundwater
49Eagle View Bar & GrillWinona50Transient non-communityGroundwater
50Whitewater Valley CampgroundWinona45Transient non-communityGroundwater

All other water systems in Winona County (27)

The remaining active systems filed under Winona County, largest first, with the population each reports serving.

Winona County water systems: frequently asked questions

How many public water systems are in Winona County, Minnesota?

EPA's SDWIS records file 77 active public water systems under Winona County, Minnesota: 12 community systems (16%), 6 non-transient non-community systems (7.8%) and 59 transient non-community systems (77%).

Who supplies drinking water in Winona County, MN?

The largest community water systems filed under Winona County are Winona (27,782 people served), Goodview (4,158 people served) and Saint Charles (3,825 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 Winona County's drinking water come from groundwater or surface water?

Of the 77 active public water systems in Winona County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Winona, uses groundwater.

Where can I find a water quality report for Winona 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. 12 community systems are filed under Winona 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 Winona 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 Winona County, Minnesota”, https://aquacensus.com/water-systems/minnesota/winona (data as of October 1, 2026).