Skip to content
AquaCensus

Clay County, Minnesota — public water systems

At a glance

47 active public water systems are filed under Clay County, Minnesota in EPA's SDWIS records, together reporting 60,153 people served. The largest is Moorhead, which reports serving 44,583 people. 13 are community water systems serving people where they live; the other 34 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

47

Population served

60.2K

Community systems

13

Groundwater share

95.7%

How does Clay County compare with other Minnesota counties?

Clay County has the 45th-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 60,153 people served in total, the 14th-largest county figure in the state and 1.1% of the statewide total. The average system here reports serving 1,280 people, about 56% 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 Clay County's drinking water come from?

By primary water source, Clay County's active systems draw on groundwater (45, 96%), purchased surface water (1, 2.1%) and surface water (1, 2.1%). Overall, 96% rely mainly on groundwater (including purchased groundwater) and 4.3% 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, Moorhead, draws primarily on surface water.

What kinds of water systems operate in Clay County?

Clay County's active systems break down as 13 community systems (28%), 2 non-transient non-community systems (4.3%) and 32 transient non-community systems (68%). 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 (62%), local government (32%) and state government (6.4%).

Water systems in Clay County

🔒 Create a free account to export CSV
Active public water systems in Clay County, Minnesota
#Water systemCountyPopulation servedTypeSource
1MoorheadClay44,583CommunitySurface water
2DilworthClay4,918CommunityPurchased surface water
3BarnesvilleClay2,784CommunityGroundwater
4HawleyClay2,267CommunityGroundwater
5GlyndonClay1,386CommunityGroundwater
6SabinClay629CommunityGroundwater
7UlenClay500CommunityGroundwater
8The PitchforkClay250Transient non-communityGroundwater
9HitterdalClay208CommunityGroundwater
10Spring Prairie ColonyClay200CommunityGroundwater
11FeltonClay178CommunityGroundwater
12Lysne Lutheran ChurchClay135Transient non-communityGroundwater
13North Buffalo Lutheran ChurchClay125Transient non-communityGroundwater
14John Bouton Housing DevelopmentClay125CommunityGroundwater
15Buffalo River State ParkClay120Transient non-communityGroundwater
16Regional Science CenterClay100Transient non-communityGroundwater
17Vintage GardensClay100Transient non-communityGroundwater
18Lee Veterinary ClinicClay100Transient non-communityGroundwater
19Mainline Bar and GrillClay100Transient non-communityGroundwater
20Hoff Lutheran ChurchClay100Transient non-communityGroundwater
21Lee Lake CampgroundsClay100Transient non-communityGroundwater
22Rollag Lutheran ChurchClay100Transient non-communityGroundwater
23ComstockClay95CommunityGroundwater
24GeorgetownClay76CommunityGroundwater
25Dee'S Drive InnClay75Transient non-communityGroundwater
26Hegland Lutheran ChurchClay75Transient non-communityGroundwater
27Solem Lutheran ChurchClay75Transient non-communityGroundwater
28Park Lutheran ChurchClay60Transient non-communityGroundwater
29Romantic Moon Event CenterClay50Transient non-communityGroundwater
30West Central AgClay42Transient non-communityGroundwater
31Concordia Lutheran ChurchClay40Transient non-communityGroundwater
32Willow Creek Golf CourseClay40Transient non-communityGroundwater
33Baker-Downer Presbyterian ChurchClay35Transient non-communityGroundwater
34Gran Lutheran ChurchClay35Transient non-communityGroundwater
35Titan MachineryClay34Non-transient non-communityGroundwater
36Alderon IndustriesClay30Non-transient non-communityGroundwater
37Mac'S, Inc..Clay30Transient non-communityGroundwater
38Wagner ParkClay28Transient non-communityGroundwater
39Sandbeck Race DevelopmentClay25Transient non-communityGroundwater
40Moorhead Municipal AirportClay25Transient non-communityGroundwater
41Agassiz Valley Grain LLCClay25Transient non-communityGroundwater
42Hawley Municipal AirportClay25Transient non-communityGroundwater
43Highland HideawayClay25Transient non-communityGroundwater
44Western Minnesota SteamClay25Transient non-communityGroundwater
45Rustic OaksClay25Transient non-communityGroundwater
46Red River Weigh Station MndotClay25Transient non-communityGroundwater
47Casey Jo'S CateringClay25Transient non-communityGroundwater

Clay County water systems: frequently asked questions

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

EPA's SDWIS records file 47 active public water systems under Clay County, Minnesota: 13 community systems (28%), 2 non-transient non-community systems (4.3%) and 32 transient non-community systems (68%).

Who supplies drinking water in Clay County, MN?

The largest community water systems filed under Clay County are Moorhead (44,583 people served), Dilworth (4,918 people served) and Barnesville (2,784 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 Clay County's drinking water come from groundwater or surface water?

Of the 47 active public water systems in Clay County, 96% draw mainly on groundwater and 4.3% on surface water, counting purchased supplies. The largest system, Moorhead, uses surface water.

Where can I find a water quality report for Clay 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. 13 community systems are filed under Clay 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 Clay 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 Clay County, Minnesota”, https://aquacensus.com/water-systems/minnesota/clay (data as of October 1, 2026).