Verified license

Caswell Testing & Water Systems

Freeland, MD · Baltimore CountyWell drilling and pump installation

Call (410) 557-9355
WebsiteDirections
License status
Active
checked September 30, 2026
License number
MWD590, PI0188, WCI179
Maryland record
Services
6
Pump Installation and more

About Caswell Testing & Water Systems

Caswell Testing & Water Systems is a well drilling and pump installation contractor based in Freeland, MD (Baltimore County). The Maryland licensing program lists license MWD590, PI0188, WCI179 as active, and we last checked the record on September 30, 2026.

The state record covers pump installation, pump repair, water treatment, 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
MWD590, PI0188, WCI179
License type
Well drilling and pump installation
Status
Active
Expires
June 1, 2027
Last verified
September 30, 2026

Check this license yourself on the official Maryland lookup.

What the state record says

Maryland licensees at this company on the State Board of Well Drillers roster: John Mellor (MWD590, master well driller, general); Billy J. Whipperman (PI0188, pump installer); Billy J. Whipperman (WCI179, water conditioner installer). Licenses run through June 1, 2027. Maryland licenses the individual under Title 13 of the Environment Article and COMAR 26.05; a master well driller may construct, repair and abandon water wells (the water supply specialization is limited to water wells, the general one includes geothermal and other wells) and install pumps, a pump installer may install and repair pumps and pitless units, and a water conditioner installer may install treatment equipment. Wells themselves need a county health department permit under COMAR 26.04.04.

Services

What the Maryland record says Caswell Testing & Water Systems is licensed or registered to do.

Pump Installation

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

Pump Repair

Tracking down low pressure, short cycling or no water, then repairing or replacing parts of the pump system.

Water Treatment

Sizing and installing softeners, iron filters, UV and reverse osmosis based on a lab test.

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 Baltimore County, Maryland.

Approximate location (Baltimore County)

Well water in Baltimore County

Useful context before you call a contractor here.

16%of households in Baltimore County drink from a private well (est.)
Not statewidewater test when a home with a well is sold: no statewide rule in Maryland, but some local areas require one
Open the Baltimore County well guide

Typical costs for these services

National ranges to help you read a quote. They are not prices from Caswell Testing & Water Systems; ask for a written estimate.

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

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

Before you hire

  1. 1

    Confirm the license

    Look up license MWD590, PI0188, WCI179 on the Maryland state lookup and make sure it is active for the work you need. Open the Maryland 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 Caswell Testing & Water Systems

Is Caswell Testing & Water Systems licensed?

Yes. The Maryland record shows license MWD590, PI0188, WCI179 (well drilling and pump installation) with the status "active", last checked on September 30, 2026. You can confirm it on the state lookup.

What services does Caswell Testing & Water Systems offer?

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

What areas does Caswell Testing & Water Systems serve?

The business is based in Baltimore County (Freeland, MD).

How do I contact Caswell Testing & Water Systems?

Call (410) 557-9355 and visit their website. The address on the state record is 21429-A York Road, Freeland, MD 21053.

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Cockeysville, MD · Baltimore County

License MWD553, JWD417, PI0074, WCI050 Active

  • Pump Installation
  • Pump Repair
  • Water Treatment
  • Well Abandonment
  • Well Drilling
  • Well Repair