Licensed Well and Septic Contractors Based in Ontario, CA

9 licensed well and septic pros based in Ontario. 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 Ontario by service

Own one of these businesses? Find your listing and claim it.

Looking for a specific contractor? Search by name, business name, or license number.

Services in Ontario, with national cost ranges

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

None of the listings based in Ontario 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 San Bernardino County.

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

Well Drilling

• Wbe Drilling INC, based in Chino, about 4 miles away
• 2 R Drilling INC, based in Chino, about 4 miles away
• Tetra Tech Bas INC, based in Diamond Bar, about 10 miles away
• Veteran Water Well Drilling, based in Norco, about 10 miles away
• 24 - 7 Water Well Drilling, based in Norco, about 10 miles away

Hiring a well and septic professional in Ontario

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