Verified license

Malcolm/Silverado A Joint Venture

San Francisco, CA · San Francisco CountyWell drilling and pump installation

Call (415) 901-4400
Directions
License status
Active
checked September 29, 2026
License number
1004080
California record
Services
5
Pump Installation and more

About Malcolm/Silverado A Joint Venture

Malcolm/Silverado A Joint Venture is a well drilling and pump installation contractor based in San Francisco, CA (San Francisco County). The California licensing program lists license 1004080 as active, and we last checked the record on September 29, 2026.

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

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
1004080
License type
Well drilling and pump installation
Status
Active
Expires
October 31, 2026
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 1004080, jointventure, first issued 2015, current through 2026-10-31). 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, HAZ hazardous substance removal. No well completion reports filed with the Department of Water Resources since 2016 under this license number (pump work and repairs are not reported, and reports filed under a driller's individual name may not match).

Services

What the California record says Malcolm/Silverado A Joint Venture 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.

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 San Francisco County, California.

Approximate location (San Francisco County)

Well water in San Francisco County

Useful context before you call a contractor here.

1%of households in San Francisco County drink from a private well (est.)
Not requiredwater test when a home with a well is sold in California
Open the San Francisco County well guide

Typical costs for these services

National ranges to help you read a quote. They are not prices from Malcolm/Silverado A Joint Venture; 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 1004080 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 Malcolm/Silverado A Joint Venture

Is Malcolm/Silverado A Joint Venture licensed?

Yes. The California record shows license 1004080 (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 Malcolm/Silverado A Joint Venture offer?

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

What areas does Malcolm/Silverado A Joint Venture serve?

The business is based in San Francisco County (San Francisco, CA).

How do I contact Malcolm/Silverado A Joint Venture?

Call (415) 901-4400. The address on the state record is 92 Natoma Street Suite 400, San Francisco, CA 94105.

Other licensed contractors near San Francisco

Aremtech Inc

Verified license

San Francisco, CA · San Francisco County

License 795570 Active

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