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| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Moorhead | Clay | 44,583 | Community | Surface water |
| 2 | Dilworth | Clay | 4,918 | Community | Purchased surface water |
| 3 | Barnesville | Clay | 2,784 | Community | Groundwater |
| 4 | Hawley | Clay | 2,267 | Community | Groundwater |
| 5 | Glyndon | Clay | 1,386 | Community | Groundwater |
| 6 | Sabin | Clay | 629 | Community | Groundwater |
| 7 | Ulen | Clay | 500 | Community | Groundwater |
| 8 | The Pitchfork | Clay | 250 | Transient non-community | Groundwater |
| 9 | Hitterdal | Clay | 208 | Community | Groundwater |
| 10 | Spring Prairie Colony | Clay | 200 | Community | Groundwater |
| 11 | Felton | Clay | 178 | Community | Groundwater |
| 12 | Lysne Lutheran Church | Clay | 135 | Transient non-community | Groundwater |
| 13 | North Buffalo Lutheran Church | Clay | 125 | Transient non-community | Groundwater |
| 14 | John Bouton Housing Development | Clay | 125 | Community | Groundwater |
| 15 | Buffalo River State Park | Clay | 120 | Transient non-community | Groundwater |
| 16 | Regional Science Center | Clay | 100 | Transient non-community | Groundwater |
| 17 | Vintage Gardens | Clay | 100 | Transient non-community | Groundwater |
| 18 | Lee Veterinary Clinic | Clay | 100 | Transient non-community | Groundwater |
| 19 | Mainline Bar and Grill | Clay | 100 | Transient non-community | Groundwater |
| 20 | Hoff Lutheran Church | Clay | 100 | Transient non-community | Groundwater |
| 21 | Lee Lake Campgrounds | Clay | 100 | Transient non-community | Groundwater |
| 22 | Rollag Lutheran Church | Clay | 100 | Transient non-community | Groundwater |
| 23 | Comstock | Clay | 95 | Community | Groundwater |
| 24 | Georgetown | Clay | 76 | Community | Groundwater |
| 25 | Dee'S Drive Inn | Clay | 75 | Transient non-community | Groundwater |
| 26 | Hegland Lutheran Church | Clay | 75 | Transient non-community | Groundwater |
| 27 | Solem Lutheran Church | Clay | 75 | Transient non-community | Groundwater |
| 28 | Park Lutheran Church | Clay | 60 | Transient non-community | Groundwater |
| 29 | Romantic Moon Event Center | Clay | 50 | Transient non-community | Groundwater |
| 30 | West Central Ag | Clay | 42 | Transient non-community | Groundwater |
| 31 | Concordia Lutheran Church | Clay | 40 | Transient non-community | Groundwater |
| 32 | Willow Creek Golf Course | Clay | 40 | Transient non-community | Groundwater |
| 33 | Baker-Downer Presbyterian Church | Clay | 35 | Transient non-community | Groundwater |
| 34 | Gran Lutheran Church | Clay | 35 | Transient non-community | Groundwater |
| 35 | Titan Machinery | Clay | 34 | Non-transient non-community | Groundwater |
| 36 | Alderon Industries | Clay | 30 | Non-transient non-community | Groundwater |
| 37 | Mac'S, Inc.. | Clay | 30 | Transient non-community | Groundwater |
| 38 | Wagner Park | Clay | 28 | Transient non-community | Groundwater |
| 39 | Sandbeck Race Development | Clay | 25 | Transient non-community | Groundwater |
| 40 | Moorhead Municipal Airport | Clay | 25 | Transient non-community | Groundwater |
| 41 | Agassiz Valley Grain LLC | Clay | 25 | Transient non-community | Groundwater |
| 42 | Hawley Municipal Airport | Clay | 25 | Transient non-community | Groundwater |
| 43 | Highland Hideaway | Clay | 25 | Transient non-community | Groundwater |
| 44 | Western Minnesota Steam | Clay | 25 | Transient non-community | Groundwater |
| 45 | Rustic Oaks | Clay | 25 | Transient non-community | Groundwater |
| 46 | Red River Weigh Station Mndot | Clay | 25 | Transient non-community | Groundwater |
| 47 | Casey Jo'S Catering | Clay | 25 | Transient non-community | Groundwater |
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
- All Minnesota public water systems· 6,465 active
- Meeker County· 54 systems
- Mower County· 54 systems
- Le Sueur County· 50 systems
- Wabasha County· 49 systems
- Houston County· 46 systems
- Wadena County· 43 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 Clay County, Minnesota”, https://aquacensus.com/water-systems/minnesota/clay (data as of October 1, 2026).