GroundRosterLicensed Well and Septic Contractors: San Joaquin County, CA
22 licensed well and septic pros based in San Joaquin County. Every license number below is sourced from public licensing records, with a link to look it up yourself.
Grouped by the county of the address on each license record, which can be a mailing address, so it doesn't tell you where the business works. When the record names no county, we place it by ZIP code, then town.
Checked against California Contractors State License Board (CSLB). Roster copy last refreshed 2026-08-17.
Towns in San Joaquin County
All 9 towns named on the license records based here, with the number of listings in each, most first.
License classes on the San Joaquin County records
Each class as the issuing agency prints it on the license record. A record that names more than one class counts once under each, so the rows can add up to more than 22.
| License class | Trade | Listings |
|---|---|---|
| Well Drilling Contractor (C-57) | Well | 12 |
| Sanitation System Contractor (C-42) | Septic | 10 |
Septic Contractors based in San Joaquin County (10)
Central Valley Septic Backhoe Drilling INCLicensed
Aaa Septic And RooterLicensed
Elvis BoothLicensed
Sierra Construction & SepticLicensed
Oviawe UyiosaLicensed
Budget Plumbing INCLicensed
Richard's Pumping & Excavating INCLicensed
Trippple Threat Plumbing LLCLicensed
John Williams Underground SewerLicensed
Oakland Trenchless & Rooter
Water Well Contractors based in San Joaquin County (12)
North Star Drilling INC
Gross Keith Water Wells & Pump INCLicensed
Bee Blessed Water Wells Drilling & Pump Service INCLicensed
Dockery Randall MarkLicensed
A & A Gross DrillingLicensed
Purviance Drillers INCLicensed
Quality ServiceLicensed
West Coast Exploration INCLicensed
Shoup Walter H Well Drilling & PumpsLicensed
Advancedgeo INCLicensed
Universal Pump & Supply INC
Moorman's Water Systems INCLicensed
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 San Joaquin County, with national cost ranges
Listings based in San Joaquin County whose license class covers each service. Cost ranges are national; each links its cost guide.
| Service | Based in San Joaquin County | National cost |
|---|---|---|
| Septic Tank Pumping | 0 | $250 to $600 |
| Septic System Installation | 10 | $3,600 to $12,500 |
| Septic Inspection | 0 | $150 to $900 |
| Septic System Design | 0 | Varies by site |
| Perc Test and Soil Evaluation | 0 | $250 to $1,000 |
| Well Drilling | 12 | $5,500 to $35,000 |
| Well Pump Repair | 0 | $1,000 to $2,500 |
None of the listings based in San Joaquin County 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 try a nearby city.
Hiring a well and septic professional in San Joaquin County
Before you sign anything: confirm the license on this page is still active with the agency that issued it, ask for proof of insurance, and get at least three written quotes; pricing on this work varies widely by site conditions.
Do I need a permit for well or septic work in California?