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Nicollet County, Minnesota — public water systems

At a glance

26 active public water systems are filed under Nicollet County, Minnesota in EPA's SDWIS records, together reporting 31,366 people served. The largest is North Mankato, which reports serving 14,448 people. 6 are community water systems serving people where they live; the other 20 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

26

Population served

31.4K

Community systems

6

Groundwater share

100%

How does Nicollet County compare with other Minnesota counties?

Nicollet County has the 62nd-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 31,366 people served in total, the 25th-largest county figure in the state and 0.6% of the statewide total. The average system here reports serving 1,206 people, about 47% 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 Nicollet County's drinking water come from?

By primary water source, Nicollet County's active systems draw on groundwater (26, 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, North Mankato, draws primarily on groundwater.

What kinds of water systems operate in Nicollet County?

Nicollet County's active systems break down as 6 community systems (23%), 7 non-transient non-community systems (27%) and 13 transient non-community systems (50%). 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 (69%), local government (23%) and state government (7.7%).

Water systems in Nicollet County

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Active public water systems in Nicollet County, Minnesota
#Water systemCountyPopulation servedTypeSource
1North MankatoNicollet14,448CommunityGroundwater
2Saint PeterNicollet12,198CommunityGroundwater
3NicolletNicollet1,117CommunityGroundwater
4CourtlandNicollet635CommunityGroundwater
5LafayetteNicollet504CommunityGroundwater
6Scandian Grove Lutheran ChurchNicollet400Transient non-communityGroundwater
7Minnesota Valley Lutheran High SchoolNicollet300Non-transient non-communityGroundwater
8Norseland Lutheran ChurchNicollet275Transient non-communityGroundwater
9Immanuel Lutheran School and ChurchNicollet255Non-transient non-communityGroundwater
10Fort Ridgely State ParkNicollet200Transient non-communityGroundwater
11St. George Catholic ChurchNicollet150Transient non-communityGroundwater
12Irene E. Gluek Memorial Camp BuildingNicollet100Transient non-communityGroundwater
13Seven Mile Creek ParkNicollet100Transient non-communityGroundwater
14Bernadotte Lutheran ChurchNicollet80Transient non-communityGroundwater
15Oakhaven CampgroundsNicollet80Transient non-communityGroundwater
16Zion Evangelical Lutheran ChurchNicollet75Transient non-communityGroundwater
17Peaceful Valley CampsitesNicollet70Transient non-communityGroundwater
18Michael Foods Egg Products Co.Nicollet60Non-transient non-communityGroundwater
19Klossner Water AssociationNicollet54CommunityGroundwater
20Norseland Scout CampNicollet50Transient non-communityGroundwater
21N.U.Q.Q.Nicollet50Transient non-communityGroundwater
22New Sweden DairyNicollet50Non-transient non-communityGroundwater
23Northern Plains DairyNicollet30Non-transient non-communityGroundwater
24Nicollet Conservation ClubNicollet30Transient non-communityGroundwater
25High Island DairyNicollet30Non-transient non-communityGroundwater
26Wis-Pak, Inc..Nicollet25Non-transient non-communityGroundwater

Nicollet County water systems: frequently asked questions

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

EPA's SDWIS records file 26 active public water systems under Nicollet County, Minnesota: 6 community systems (23%), 7 non-transient non-community systems (27%) and 13 transient non-community systems (50%).

Who supplies drinking water in Nicollet County, MN?

The largest community water systems filed under Nicollet County are North Mankato (14,448 people served), Saint Peter (12,198 people served) and Nicollet (1,117 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 Nicollet County's drinking water come from groundwater or surface water?

Of the 26 active public water systems in Nicollet County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, North Mankato, uses groundwater.

Where can I find a water quality report for Nicollet 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. 6 community systems are filed under Nicollet 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 Nicollet 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 Nicollet County, Minnesota”, https://aquacensus.com/water-systems/minnesota/nicollet (data as of October 1, 2026).