GroundRosterLicensed Well and Septic Contractors: Stanislaus County, CA
30 licensed well and septic pros based in Stanislaus 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 Stanislaus County
All 12 towns named on the license records based here, with the number of listings in each, most first.
License classes on the Stanislaus 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 30.
| License class | Trade | Listings |
|---|---|---|
| Sanitation System Contractor (C-42) | Septic | 17 |
| Well Drilling Contractor (C-57) | Well | 13 |
Septic Contractors based in Stanislaus County (17)
Thorsen's-norquist INCLicensed
Pro Pumping LLCLicensed
Garcia Septic + Construction INCLicensed
N M Construction COLicensed
Perennial BuildersLicensed
Jb Demo & DirtLicensed
Roto-rooter
J D Septic ServiceLicensed
Dave's Drain Cleaning & PlumbingLicensed
Champion Industrial Contractors INC
Mountain Valley PumpingLicensed
Central Valley PavingLicensed
Yates Wastewater Services INCLicensed
Teeples Plumbing & Drilling INCLicensed
West Side PlumbingLicensed
Brown Sheet Metal And Mechanical INCLicensed
Gutierrez MarkLicensed
Water Well Contractors based in Stanislaus County (13)
Castle Well Drilling INCLicensed
Howk SystemsLicensed
Applied Power Systems INCLicensed
Gary's Well ServiceLicensed
Amerine Systems IncorporatedLicensed
Aaron's Well Drilling INCLicensed
Calwater Drilling Company INCLicensed
Valley Pump & DrillingLicensed
Pump Pros INCLicensed
Masellis Drilling INCLicensed
Commonwealth General Contractors CorporationLicensed
Don Pedro Pump LLCLicensed
Hennings Bros Drilling CO 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 Stanislaus County, with national cost ranges
Listings based in Stanislaus County whose license class covers each service. Cost ranges are national; each links its cost guide.
| Service | Based in Stanislaus County | National cost |
|---|---|---|
| Septic Tank Pumping | 0 | $250 to $600 |
| Septic System Installation | 17 | $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 | 13 | $5,500 to $35,000 |
| Well Pump Repair | 0 | $1,000 to $2,500 |
None of the listings based in Stanislaus 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 Stanislaus 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?