Verified license

William A Dunn

Holden, ME · Penobscot CountyWell drilling

Call (207) 460-4620
License status
Active
checked September 30, 2026
License number
WD00037
Maine record
Services
3
Well Abandonment and more

About William A Dunn

William A Dunn is a well drilling contractor based in Holden, ME (Penobscot County). The Maine licensing program lists license WD00037 as active, and we last checked the record on September 30, 2026.

The state record covers well abandonment, well drilling and well repair.

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
WD00037
License type
Well drilling
Status
Active
Expires
December 31, 2026
Last verified
September 30, 2026

Check this license yourself on the official Maine lookup.

What the state record says

Maine licensed master well driller (Maine Water Well Commission license WD00037, held by William A Dunn, expires December 31, 2026). Maine licenses both the company and the individual under 32 MRS chapter 69-C and the Commission's rules (10-144 CMR chapter 232); a master well driller may drill, deepen, hydrofracture and abandon wells, a master pump installer may install and service pumps and pressure systems, journeymen work under a master, and geothermal grades cover open and closed loop systems. Maine requires no state permit for a household well.

Services

What the Maine record says William A Dunn is licensed or registered to do.

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 Penobscot County, Maine.

Approximate location (Penobscot County)

Well water in Penobscot County

Useful context before you call a contractor here.

53%of households in Penobscot County drink from a private well (est.)
180 to 320 feet; the median of 4,874 domestic wells in the Maine Geological Survey well database drilled since 2000 is 240 feettypical private well depth
Not requiredwater test when a home with a well is sold in Maine
Open the Penobscot County well guide

Typical costs for these services

National ranges to help you read a quote. They are not prices from William A Dunn; ask for a written estimate.

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 WD00037 on the Maine state lookup and make sure it is active for the work you need. Open the Maine 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 William A Dunn

Is William A Dunn licensed?

Yes. The Maine record shows license WD00037 (well drilling) with the status "active", last checked on September 30, 2026. You can confirm it on the state lookup.

What services does William A Dunn offer?

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

What areas does William A Dunn serve?

The business is based in Penobscot County (Holden, ME).

How do I contact William A Dunn?

Call (207) 460-4620. The address on the state record is PO BOX 232, Holden, ME 04429.

Other licensed contractors near Holden