Mille Lacs County, Minnesota — public water systems
At a glance
91 active public water systems are filed under Mille Lacs County, Minnesota in EPA's SDWIS records, together reporting 20,104 people served. The largest is Princeton, which reports serving 5,421 people. 8 are community water systems serving people where they live; the other 83 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
91
Population served
20.1K
Community systems
8
Groundwater share
100%
How does Mille Lacs County compare with other Minnesota counties?
Mille Lacs County has the 23rd-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 20,104 people served in total, the 41st-largest county figure in the state and 0.4% of the statewide total. The average system here reports serving 221 people, well 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 Mille Lacs County's drinking water come from?
By primary water source, Mille Lacs County's active systems draw on groundwater (91, 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, Princeton, draws primarily on groundwater.
What kinds of water systems operate in Mille Lacs County?
Mille Lacs County's active systems break down as 8 community systems (8.8%), 1 non-transient non-community systems (1.1%) and 82 transient non-community systems (90%). 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 (86%), local government (9.9%) and state government (4.4%).
The 50 largest water systems in Mille Lacs County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Princeton | Mille Lacs | 5,421 | Community | Groundwater |
| 2 | Milaca | Mille Lacs | 3,043 | Community | Groundwater |
| 3 | New Life Christian Center | Mille Lacs | 1,000 | Transient non-community | Groundwater |
| 4 | Onamia | Mille Lacs | 831 | Community | Groundwater |
| 5 | Isle | Mille Lacs | 820 | Community | Groundwater |
| 6 | Broberg'S Country Store | Mille Lacs | 500 | Transient non-community | Groundwater |
| 7 | Foreston | Mille Lacs | 340 | Community | Groundwater |
| 8 | Koch'S Hardware Hank | Mille Lacs | 300 | Transient non-community | Groundwater |
| 9 | Carefree Acres Campsite Assn. | Mille Lacs | 300 | Transient non-community | Groundwater |
| 10 | Dairy Queen-Onamia | Mille Lacs | 275 | Transient non-community | Groundwater |
| 11 | Rum River Wayside Rest Mndot | Mille Lacs | 250 | Transient non-community | Groundwater |
| 12 | Izatys Townhouse Association | Mille Lacs | 250 | Transient non-community | Groundwater |
| 13 | Pease | Mille Lacs | 242 | Community | Groundwater |
| 14 | Zion Lutheran Church | Mille Lacs | 230 | Transient non-community | Groundwater |
| 15 | Milaca Alliance Church | Mille Lacs | 210 | Transient non-community | Groundwater |
| 16 | Father Hennepin State Park | Mille Lacs | 200 | Transient non-community | Groundwater |
| 17 | Bethel Christian Reformed Church | Mille Lacs | 200 | Transient non-community | Groundwater |
| 18 | Happy'S Drive in | Mille Lacs | 200 | Transient non-community | Groundwater |
| 19 | Hairy Mosquito Trading Company | Mille Lacs | 200 | Transient non-community | Groundwater |
| 20 | Kingdom Hall of Jehovah'S Witnesses | Mille Lacs | 180 | Transient non-community | Groundwater |
| 21 | Gateway One Stop | Mille Lacs | 150 | Transient non-community | Groundwater |
| 22 | Msa Flagship Inn | Mille Lacs | 150 | Transient non-community | Groundwater |
| 23 | Sacred Heart of Jesus Church | Mille Lacs | 150 | Transient non-community | Groundwater |
| 24 | Mille Lacs Super Stop | Mille Lacs | 150 | Transient non-community | Groundwater |
| 25 | Rough Cut Bar and Grill | Mille Lacs | 150 | Transient non-community | Groundwater |
| 26 | Izaty'S Resort | Mille Lacs | 150 | Transient non-community | Groundwater |
| 27 | Northern Lights Ballroom & Banquet Cente | Mille Lacs | 150 | Transient non-community | Groundwater |
| 28 | Reed'S Mille Lacs Lake Outpost Store | Mille Lacs | 125 | Transient non-community | Groundwater |
| 29 | Clyde'S Wood Fire Grill | Mille Lacs | 125 | Transient non-community | Groundwater |
| 30 | Estes Brook Evangelical Free Church | Mille Lacs | 120 | Transient non-community | Groundwater |
| 31 | Timber Bay Camp and Retreat Center | Mille Lacs | 120 | Transient non-community | Groundwater |
| 32 | Mugg'S of Mille Lacs | Mille Lacs | 100 | Transient non-community | Groundwater |
| 33 | Nitti'S Hunter'S Point Resort | Mille Lacs | 100 | Transient non-community | Groundwater |
| 34 | Morning Star Market | Mille Lacs | 100 | Transient non-community | Groundwater |
| 35 | Long Siding Station | Mille Lacs | 100 | Transient non-community | Groundwater |
| 36 | Eddy'S Resort, LLC | Mille Lacs | 100 | Transient non-community | Groundwater |
| 37 | Tulibee Tavern | Mille Lacs | 100 | Transient non-community | Groundwater |
| 38 | Chico'S Place | Mille Lacs | 100 | Transient non-community | Groundwater |
| 39 | Breakers of Sunset Bay Association Inc.. | Mille Lacs | 100 | Transient non-community | Groundwater |
| 40 | Opstead Baptist Church | Mille Lacs | 100 | Transient non-community | Groundwater |
| 41 | Johnson'S Portside | Mille Lacs | 100 | Transient non-community | Groundwater |
| 42 | Mille Lacs Northern Skys Rv Resorts | Mille Lacs | 100 | Transient non-community | Groundwater |
| 43 | Veterans Club | Mille Lacs | 100 | Transient non-community | Groundwater |
| 44 | Blaze Credit Union | Mille Lacs | 100 | Transient non-community | Groundwater |
| 45 | Bock | Mille Lacs | 83 | Community | Groundwater |
| 46 | Beachside Resort | Mille Lacs | 80 | Transient non-community | Groundwater |
| 47 | St. Paul'S Lutheran Church | Mille Lacs | 80 | Transient non-community | Groundwater |
| 48 | Green Acres Mobile Home Park | Mille Lacs | 80 | Community | Groundwater |
| 49 | Kathio State Park | Mille Lacs | 75 | Transient non-community | Groundwater |
| 50 | North Star Resort | Mille Lacs | 75 | Transient non-community | Groundwater |
All other water systems in Mille Lacs County (41)
The remaining active systems filed under Mille Lacs County, largest first, with the population each reports serving.
- Bayview Bar and Grill75
- Stones Throw Golf Course75
- Rum River Campground75
- Milaca Unclaimed Freight75
- Faith Christian School75
- Moonshine Bar & Grill75
- Appeldoorn'S Sunset Bay Resort70
- Lighthouse Fellowship70
- Mln Enterprises68
- Cross of Life Community Church65
- Wahkon Presbyterian Church60
- Northwood Hills Golf Course60
- Minobimaadiziwin Hotel56
- Mille Lacs Wildlife Mgmt. Headquarters50
- Princeton Lanes and Lounge50
- Camp Onomia50
- Mac'S Twin Bay Resort50
- Fiddlestix Rv & Golf Course50
- Northland Auto Center Inc..45
- Rocky Reef Resort40
- Little Whitefish Resort40
- Good Shepherd Lutheran Church40
- Sunset Properties30
- Sasker Manufacturing30
- Princeton Dental Center25
- Lakeside Manor Hoa of Mille Lacs County25
- Wahkon City Park25
- White Cap Inn Resort25
- Alpha & Omega Pizza Farm25
- Milaca Alano25
- Copper Fox25
- Midwest Machinery25
- Wahkon City Hall25
- Shooter'S Sports Bar25
- A-Z Restaurant Equipment25
- Island View Resort25
- Soo Line Trail /Onamia Mn Koa25
- Edgewater Resort25
- Stocky'S Harbor Estates25
- Village at Izaty'S Association25
- Frederickson'S Marina LLC25
Mille Lacs County water systems: frequently asked questions
How many public water systems are in Mille Lacs County, Minnesota?
EPA's SDWIS records file 91 active public water systems under Mille Lacs County, Minnesota: 8 community systems (8.8%), 1 non-transient non-community systems (1.1%) and 82 transient non-community systems (90%).
Who supplies drinking water in Mille Lacs County, MN?
The largest community water systems filed under Mille Lacs County are Princeton (5,421 people served), Milaca (3,043 people served) and Onamia (831 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 Mille Lacs County's drinking water come from groundwater or surface water?
Of the 91 active public water systems in Mille Lacs County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Princeton, uses groundwater.
Where can I find a water quality report for Mille Lacs 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. 8 community systems are filed under Mille Lacs 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 Mille Lacs 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
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- 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 Mille Lacs County, Minnesota”, https://aquacensus.com/water-systems/minnesota/mille-lacs (data as of October 1, 2026).