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Carlton County, Minnesota — public water systems

At a glance

75 active public water systems are filed under Carlton County, Minnesota in EPA's SDWIS records, together reporting 23,773 people served. The largest is Cloquet, which reports serving 12,864 people. 10 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

75

Population served

23.8K

Community systems

10

Groundwater share

100%

How does Carlton County compare with other Minnesota counties?

Carlton County has the 28th-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 23,773 people served in total, the 37th-largest county figure in the state and 0.4% of the statewide total. The average system here reports serving 317 people, about 61% 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 Carlton County's drinking water come from?

By primary water source, Carlton County's active systems draw on groundwater (72, 96%), groundwater under influence of surface water (2, 2.7%) and purchased groundwater (1, 1.3%). 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, Cloquet, draws primarily on groundwater.

What kinds of water systems operate in Carlton County?

Carlton County's active systems break down as 10 community systems (13%), 10 non-transient non-community systems (13%) and 55 transient non-community systems (73%). 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 (83%), local government (15%) and state government (2.7%).

The 50 largest water systems in Carlton County

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Active public water systems in Carlton County, Minnesota
#Water systemCountyPopulation servedTypeSource
1CloquetCarlton12,864CommunityGroundwater
2Moose LakeCarlton1,782CommunityGroundwater
3Esko Public School, Isd #99Carlton1,200Non-transient non-communityGroundwater
4CarltonCarlton1,146CommunityGroundwater
5ScanlonCarlton1,003CommunityPurchased groundwater
6Mn Correctional Facility - Moose LakeCarlton975CommunityGroundwater
7BarnumCarlton621CommunityGroundwater
8WrenshallCarlton399CommunityGroundwater
9CromwellCarlton250CommunityGroundwater
10Kettle RiverCarlton168CommunityGroundwater
11Apostolic Lutheran ChurchCarlton150Transient non-communityGroundwater
12The Lounge on Big LakeCarlton150Transient non-communityGroundwater
13Farmer'S Co-Op CompanyCarlton120Transient non-communityGroundwater
14Covenant Park Bible CampCarlton120Transient non-communityGroundwater
15Esko Sports ComplexCarlton100Transient non-communityGroundwater
16Sweetly Kismet Candy StoreCarlton100Transient non-communityGroundwater
17Knife Island CampgroundCarlton100Transient non-communityGroundwater under influence of surface water
18Big Lake Golf ResortCarlton100Transient non-communityGroundwater
19Caywood Country Store EskoCarlton100Transient non-communityGroundwater
20St. Matthew'S Lutheran ChurchCarlton100Non-transient non-communityGroundwater
21Rugged Spruce Golf CourseCarlton75Transient non-communityGroundwater
22Elim Lutheran ChurchCarlton75Transient non-communityGroundwater
23Tequi TownCarlton75Transient non-communityGroundwater
24West Side ChurchCarlton75Transient non-communityGroundwater
25Cloquet/Duluth KoaCarlton75Transient non-communityGroundwater
26Elmwood InnCarlton70Transient non-communityGroundwater
27Salem Lutheran ChurchCarlton70Transient non-communityGroundwater
28Bent Trout Lake CampgroundCarlton60Transient non-communityGroundwater
29Ram Mutual Insurance CompanyCarlton60Non-transient non-communityGroundwater
30Evangelical Free ChurchCarlton60Transient non-communityGroundwater
31Family Worship ChurchCarlton60Transient non-communityGroundwater
32Big Lake Shores CampgroundCarlton50Transient non-communityGroundwater
33Park Lake Restaurant and SaloonCarlton50Transient non-communityGroundwater
34Route 61 Lounge and BowlingCarlton50Transient non-communityGroundwater
35Bethany Lutheran ChurchCarlton50Transient non-communityGroundwater
36Island Lake CampgroundCarlton50Transient non-communityGroundwater
37Moose Lake State ParkCarlton50Transient non-communityGroundwater
38Mini Mos Child CareCarlton50Non-transient non-communityGroundwater
39Mash-Ka-Wisen Treatment CenterCarlton50Non-transient non-communityGroundwater
40Mahtowa TavernCarlton50Transient non-communityGroundwater
41Lake Venoah CommunityCarlton45Transient non-communityGroundwater
42Kalli'S PlaceCarlton45Transient non-communityGroundwater
43Sonlife Community ChurchCarlton40Transient non-communityGroundwater
44Mahtowa Covenant ChurchCarlton40Transient non-communityGroundwater
45Esko Public School - Community Ed BldgCarlton40Non-transient non-communityGroundwater
46Utopia BorealisCarlton35Transient non-communityGroundwater
47Thomson Town HallCarlton35Transient non-communityGroundwater
48Northwood United Methodist ChurchCarlton35Non-transient non-communityGroundwater
49Red Fox Campground and Rv ParkCarlton30Transient non-communityGroundwater
50U of M Cloquet Forestry CenterCarlton30Non-transient non-communityGroundwater

All other water systems in Carlton County (25)

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

Carlton County water systems: frequently asked questions

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

EPA's SDWIS records file 75 active public water systems under Carlton County, Minnesota: 10 community systems (13%), 10 non-transient non-community systems (13%) and 55 transient non-community systems (73%).

Who supplies drinking water in Carlton County, MN?

The largest community water systems filed under Carlton County are Cloquet (12,864 people served), Moose Lake (1,782 people served) and Carlton (1,146 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 Carlton County's drinking water come from groundwater or surface water?

Of the 75 active public water systems in Carlton County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Cloquet, uses groundwater.

Where can I find a water quality report for Carlton 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. 10 community systems are filed under Carlton 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 Carlton 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 Carlton County, Minnesota”, https://aquacensus.com/water-systems/minnesota/carlton (data as of October 1, 2026).