Minnesota county well guide

Well Water in Aitkin County, MN: Testing, Contractors and Rules

About 5,005 households in Aitkin County, 80% of the county, rely on a private well. Nobody tests that water unless the owner does.

Labs within 40 milesLicensed contractors
80%of households on a private well
Share on wells, county vs state
Aitkin County80%
Minnesota average22%
3licensed contractors serve the county
36 mito the nearest certified lab, A.W. Research Laboratories, Inc.
Nostatewide test required when a home is sold

Most homes in Aitkin County are on a private well: about 5,005 households, 80% of the county. That makes Aitkin County one of the places in Minnesota where the water department is the homeowner.

Local rules for wells in Aitkin County

Minnesota’s well code (Rules Chapter 4725) applies in Aitkin County: the licensed well contractor files a notification with the Department of Health before drilling and must have the new well tested for coliform bacteria, nitrate and arsenic before it is used. At sale, state law requires a well disclosure statement and certificate listing every well on the property, but no water test.

At a glance

Water test for a new wellRequired

The licensed well contractor must have every new well tested for coliform bacteria, nitrate and arsenic before it is put into service, and must file a well notification with MDH before drilling. Results go to the owner and to MDH.

Water test when a home is soldNot required statewide

No water test is required, but Minnesota requires a Well Disclosure Statement in the purchase agreement and a Well Disclosure Certificate filed with the deed listing every well on the property and whether it is in use or sealed.

What the state recommends

MDH recommends testing for coliform bacteria every year, nitrate every other year (every year if an infant or pregnant woman drinks the water), and arsenic, lead and manganese at least once. Retest after any repair, flooding or change in taste, color or odor.

Free or low-cost testingAvailable

The Minnesota Department of Agriculture and many counties and soil and water conservation districts run free or low-cost nitrate screening clinics; several county health departments run accredited labs that accept homeowner samples.

Getting your water tested near Aitkin County

2 certified labs within 40 miles serve Aitkin County, starting with A.W. Research Laboratories, Inc. in Brainerd (about 36 miles from the county center). Each card below shows whether the lab takes homeowner samples and which tests it is certified for.

2 certified labs within 40 miles

Licensed well contractors serving Aitkin County

3 licensed contractors serve Aitkin County, including H & H Services, LLC and Hanni Plumbing and Heating. Each profile carries the state license number and the date we checked it, and the filters below sort them by drilling, pump work or treatment.

Well depth and water chemistry

What comes up with the water depends on the aquifer. A first full panel tells you which of them apply to your well.

Typical well depth

Varies by location. Check the state well record search for logs of nearby wells.

Contaminants to test for
  • Arsenic (about 1 in 10 wells statewide exceed the standard)
  • Nitrate (southeast karst and central sands)
  • Manganese
  • Coliform bacteria
  • Iron
  • Hardness
  • Fluoride
  • Radium and radon (bedrock aquifers)
  • PFAS (east metro and airport areas)

Neighboring counties: Crow Wing County, Kanabec County, Pine County, Cass County.

What well work costs in Aitkin County

Bacteria test (coliform and E. coli)$50published Minnesota lab fees
Nitrate testOften freepublished Minnesota lab fees
Broad panel (metals and minerals)$85 to $450state and university lab packages
Well inspection$250 to $550$350 to $900 with water testing
Submersible pump replacement$1,000 to $2,500installed; deep wells cost more
Pressure tank replacement$800 to $1,500installed
One treatment unit$700 to $3,500softener, iron filter or UV, installed
Multi-stage whole-house treatment$2,500 to $10,000+several units or whole-house RO, installed
New well, complete$6,000 to $16,000typical 200 ft well with pump; drilling alone about $20 to $30 per foot; deeper wells cost more
Shock chlorination$80 to $200by a contractor; under $30 to do yourself

County lab bacteria test ($50 in Fillmore County); many counties and the state agriculture department run free nitrate screening clinics. Installed costs are national 2026 ranges; local quotes vary with depth, access and materials. Sources, checked September 2026: Fillmore SWCD water lab, Minnesota Department of Agriculture: nitrate testing, HomeGuide cost guides, Angi: cost to shock a well.

Questions Aitkin County well owners ask

How many homes in Aitkin County are on a well?

About 5,005, or 80% of households, based on Census housing data and state well surveys. The share is highest outside the towns with public water.

Where is the closest certified lab to Aitkin County?

A.W. Research Laboratories, Inc. in Brainerd, about 36 miles away. It accepts homeowner samples.

Do I need a permit to drill a well in Aitkin County?

Yes. The licensed well contractor files a well notification with the Minnesota Department of Health before drilling. Some counties (for example Dakota and Olmsted) run delegated well programs with their own permit.

What does a well test cost near Aitkin County?

A bacteria and nitrate test runs $25 to $75 at most certified labs; a full panel with metals is $150 to $400. County health department labs and soil and water conservation districts run low-cost nitrate clinics, and MDH-accredited labs list which of them accept homeowner samples.