Verified license

McMullen Drilling Corp

Saint Helens, OR · Columbia CountyWell drilling

Call (503) 397-2356
License status
Active
checked September 30, 2026
License number
1975
Oregon record
Services
4
Pump Installation and more
Counties served
6
on the state record

About McMullen Drilling Corp

McMullen Drilling Corp is a well drilling contractor based in Saint Helens, OR (Columbia County). The Oregon licensing program lists license 1975 as active, and we last checked the record on September 30, 2026.

The state record covers pump installation, well abandonment, well drilling and well repair. It lists 6 counties where the business works, including Columbia County, Clatsop County and Washington 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
1975
License type
Well drilling
Status
Active
Last verified
September 30, 2026

Check this license yourself on the official Oregon lookup.

What the state record says

Oregon licensed water supply well constructor (Water Resources Department license 1975, held by Aaron Morley, water supply wells; current on OWRD's well constructor license list). Oregon licenses the individual under ORS 537.747 and OAR 690-205; a water supply well constructor must be bonded, files a start card before drilling and a well report within 30 days of finishing, and may construct, alter, deepen, convert and abandon water wells. Oregon has no separate pump installer license. Filed 384 water well reports with OWRD since 2016 (320 new wells, 357 of them domestic; 73 abandonments), most recently in February 2022, mostly in Columbia, Clatsop and Washington counties; the median depth of the new wells is 200 feet.

Services

What the Oregon record says McMullen Drilling Corp is licensed or registered to do.

Pump Installation

Setting a new submersible or jet pump with the pressure tank, switch and controls.

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 Columbia County, Oregon. The state record lists 6 counties.

Approximate location (Columbia County)Counties on the state record

  • Columbia County
  • Clatsop County
  • Washington County
  • Multnomah County
  • Tillamook County
  • Clackamas County

Well water in Columbia County

Useful context before you call a contractor here.

28%of households in Columbia County drink from a private well (est.)
120 to 300 feet; the median of 1,391 new domestic wells reported to OWRD since 2000 is 200 feettypical private well depth
Requiredwater test when a home with a well is sold in Oregon
Open the Columbia County well guide

Typical costs for these services

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

Submersible pump replacement$1,200 to $4,500parts and labor
Pressure tank replacement$400 to $1,200installed
New well drilled$5,500 to $25,000about $25 to $65 per foot
Shock chlorination$80 to $300or about $20 as a DIY job

Before you hire

  1. 1

    Confirm the license

    Look up license 1975 on the Oregon state lookup and make sure it is active for the work you need. Open the Oregon 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 McMullen Drilling Corp

Is McMullen Drilling Corp licensed?

Yes. The Oregon record shows license 1975 (well drilling) with the status "active", last checked on September 30, 2026. You can confirm it on the state lookup.

What services does McMullen Drilling Corp offer?

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

What areas does McMullen Drilling Corp serve?

The business is based in Columbia County (Saint Helens, OR). The state record lists 6 counties, including Columbia County, Clatsop County, Washington County, Multnomah County and Tillamook County.

How do I contact McMullen Drilling Corp?

Call (503) 397-2356. The address on the state record is PO BOX 283, Saint Helens, OR 97051.

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