Licensed Well and Septic Contractors Based in Castro Valley, CA

6 licensed well and septic pros based in Castro Valley. Every license number below is sourced from public licensing records, with a link to look it up yourself.

"Based in" is the city on the business's license record. That can be a mailing address; it doesn't tell you where the business works. Businesses based in nearby towns may also work here.

Browse Castro Valley by service

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Services in Castro Valley, with national cost ranges

Listings based in Castro Valley whose license class covers each service. Cost ranges are national; each links its cost guide.

None of the listings based in Castro Valley hold a license class we can match to septic tank pumping, septic inspection, septic system design, perc test and soil evaluation or well pump repair. Ask any contractor whether they do this work, or browse the listings based in Alameda County.

Listings that hold a matching license class, based in nearby towns rather than in Castro Valley, for the services with fewer than 3 here. Nearest first, in straight-line miles from the center of Castro Valley:

Well Drilling

• V T S Drilling LLC, based in Hayward, about 5 miles away
• Middle Earth Geo Testing INC, based in Hayward, about 6 miles away
• McRae K M INC, based in Hayward, about 8 miles away
• Condon-johnson & Associates INC, based in Oakland, about 8 miles away
• Altamont Water Well And Pump, based in Pleasanton, about 10 miles away

Hiring a well and septic professional in Castro Valley

Before you hire, confirm the license is still active with the agency that issued it and get at least three written quotes.

Homeowner guides

• What Is a Septic Tank and How Does It Work?
• No Water From Your Well? What to Check First
• Well Water Testing: What to Test For and How Often
• Do I need a permit for well or septic work in California?

Nearby cities