Verified license

Oakville Pump Service Inc

Napa, CA · Napa CountyWell drilling and pump installation

Call (707) 944-2471
WebsiteDirections
License status
Active
checked September 29, 2026
License number
744958
California record
Services
6
Pump Installation and more
Counties served
1
on the state record

About Oakville Pump Service Inc

Oakville Pump Service Inc is a well drilling and pump installation contractor based in Napa, CA (Napa County). The California licensing program lists license 744958 as active, and we last checked the record on September 29, 2026.

The state record covers pump installation, pump repair, water treatment, well abandonment, well drilling and well repair. It lists 1 county where the business works, including Napa County.

This profile is built from public state license records checked on September 29, 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
744958
License type
Well drilling and pump installation
Status
Active
Expires
January 31, 2028
Last verified
September 29, 2026

Check this license yourself on the official California lookup.

What the state record says

Holds an active California C-57 Well Drilling contractor license (CSLB license 744958, corporation, first issued 1998, current through 2028-01-31). The C-57 classification covers drilling, casing, cleaning, repairing and destroying water wells and installing and repairing well pumps. Also licensed as: A general engineering, B general building, C-10 electrical, D-21 machinery and pumps, C-36 plumbing. Filed 16 well completion reports with the Department of Water Resources since 2016 (0 new wells, 11 of them domestic supply; 16 well destructions), most recently in April 2024, mostly in Napa County.

Services

What the California record says Oakville Pump Service Inc 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 Napa County, California. The state record lists 1 county.

Approximate location (Napa County)Counties on the state record

  • Napa County

Well water in Napa County

Useful context before you call a contractor here.

12%of households in Napa County drink from a private well (est.)
290 to 530 feet; the median of 1,676 domestic wells reported to DWR since 2000 is 400 feettypical private well depth
Not requiredwater test when a home with a well is sold in California
Open the Napa County well guide

Typical costs for these services

National ranges to help you read a quote. They are not prices from Oakville Pump Service Inc; ask for a written estimate.

Submersible pump replacement$1,200 to $4,500parts and labor
Pressure tank replacement$400 to $1,200installed
Whole-house treatment system$800 to $6,000softener, iron filter, UV, RO
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 744958 on the California state lookup and make sure it is active for the work you need. Open the California 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 Oakville Pump Service Inc

Is Oakville Pump Service Inc licensed?

Yes. The California record shows license 744958 (well drilling and pump installation) with the status "active", last checked on September 29, 2026. You can confirm it on the state lookup.

What services does Oakville Pump Service Inc 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 Oakville Pump Service Inc serve?

The business is based in Napa County (Napa, CA). The state record lists 1 county, including Napa County.

How do I contact Oakville Pump Service Inc?

Call (707) 944-2471 and visit their website. The address on the state record is 2310 Laurel Street Suite 1, Napa, CA 94558.

Other licensed contractors near Napa