Verified license

McCarthy Brothers Drilling

Halfway, MO · Polk CountyWell drilling

Call (417) 327-6797
WebsiteDirections
License status
Active
checked September 30, 2026
License number
003775, 003912
Missouri record
Services
4
Geothermal and more
Counties served
8
on the state record

About McCarthy Brothers Drilling

McCarthy Brothers Drilling is a well drilling contractor based in Halfway, MO (Polk County). The Missouri licensing program lists license 003775, 003912 as active, and we last checked the record on September 30, 2026.

The state record covers geothermal, well abandonment, well drilling and well repair. It lists 8 counties where the business works, including Polk County, Barry County and McDonald County.

This profile is built from public state license records checked on September 30, 2026. Well Water Insider does not rate or endorse contractors. Own this business? Claim the profile to add photos, hours and a description.

License record

Verified against state records
License number
003775, 003912
License type
Well drilling
Status
Active
Last verified
September 30, 2026

Check this license yourself on the official Missouri lookup.

What the state record says

Missouri permitted contractors at this business on the WIMS permit search: Jeremy L McCarthy (permit 003775: water well, monitoring well, heat pump well); Timothy R Stokes (permit 003912: water well). Missouri permits the individual under the Water Well Drillers' Act (RSMo 256.600 to 256.640) and the 10 CSR 23 well construction rules; a water well permit covers constructing, reconstructing and plugging water wells, and a pump installer permit covers installing and repairing pumps. A restricted permit limits the holder to specified work. Primary responsible party on the business record: Jeremy McCarthy. Filed 3,377 water well certification reports with the Missouri Geological Survey since 2016 (3,358 of them domestic wells), most recently in September 2026, mostly in Polk, Barry and McDonald counties; the median depth of those wells is 480 feet.

Services

What the Missouri record says McCarthy Brothers Drilling is licensed or registered to do.

Geothermal

Drilling closed-loop boreholes for ground-source heat pumps.

Well Abandonment

Sealing an unused well to state standards so it cannot carry surface water down into the aquifer.

Well Drilling

Drilling a new private well, setting the casing and grouting it the way state rules require.

Well Repair

Fixing casings, caps, pitless adapters and other parts of an existing well.

Service area

Based in Polk County, Missouri. The state record lists 8 counties.

Approximate location (Polk County)Counties on the state record

  • Polk County
  • Barry County
  • McDonald County
  • Greene County
  • Cedar County
  • Dallas County
  • Dade County
  • Newton County

Well water in Polk County

Useful context before you call a contractor here.

53%of households in Polk County drink from a private well (est.)
300 to 400 feet; the median of 2,787 domestic wells certified to the Missouri Geological Survey since 2000 is 350 feettypical private well depth
Not statewidewater test when a home with a well is sold: no statewide rule in Missouri
Open the Polk County well guide

Typical costs for these services

National ranges to help you read a quote. They are not prices from McCarthy Brothers Drilling; ask for a written estimate.

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

National 2026 ranges. Sources, checked September 2026: HomeGuide cost guides, Angi.

Before you hire

  1. 1

    Confirm the license

    Look up license 003775, 003912 on the Missouri state lookup and make sure it is active for the work you need. Open the Missouri lookup.

  2. 2

    Get a written estimate

    Ask for the scope, parts, depth or pump size, permit fees and warranty in writing. Compare two or three quotes for big jobs.

  3. 3

    Ask about permits and the well log

    New wells and many repairs are reported to the state. Ask who files the paperwork and for a copy of the well log.

  4. 4

    Test the water after the work

    Any work on a well can disturb bacteria. Test for coliform bacteria once the job is done.

Questions about McCarthy Brothers Drilling

Is McCarthy Brothers Drilling licensed?

Yes. The Missouri record shows license 003775, 003912 (well drilling) with the status "active", last checked on September 30, 2026. You can confirm it on the state lookup.

What services does McCarthy Brothers Drilling offer?

The state record lists geothermal, well abandonment, well drilling and well repair. Call to confirm they take on your type of job.

What areas does McCarthy Brothers Drilling serve?

The business is based in Polk County (Halfway, MO). The state record lists 8 counties, including Polk County, Barry County, McDonald County, Greene County and Cedar County.

How do I contact McCarthy Brothers Drilling?

Call (417) 327-6797 and visit their website. The address on the state record is 4426 Highway Aa, Halfway, MO 65663.

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