
Septic Tank Installation
Complete septic system design, permitting, and installation, fully warranted, code-compliant, and built to last.
Learn more →Central Valley septic and excavation experts since 1990
Since 1990, one in-house crew has handled the Central Valley's septic installs, pumping, trenching, and excavation, with a 5.0 rating across 106 Google and Yelp reviews.

Services

Complete septic system design, permitting, and installation, fully warranted, code-compliant, and built to last.
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Fast diagnosis and lasting repairs for tanks, drain fields, and components, before small problems become expensive failures.
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Routine and emergency pumping that prevents backups and odors and extends the life of your system.
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Licensed inspections with accurate, detailed reports, trusted by home buyers, property managers, and real estate agents.
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Sewer camera diagnostics that find blockages, root intrusions, and failing lines without digging.
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High-pressure drain cleaning that scours pipes clean, up to 20 gallons per minute at 5,000 PSI.
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One call, one crew, from first dig to final permit
Our story
A-1 Septic began as a small septic service company, and AAA Backhoe was an excavation and groundwork firm. The two turned out to be perfectly complementary, so we joined forces to become the single contractor capable of handling both routine maintenance and complex, start-to-finish projects, from complete demolition to the installation of brand-new septic systems.
Our owner has been designing, installing, and repairing septic systems since 1985, and our company has served Stanislaus, San Joaquin, and Merced counties since 1990. We know the local soil and codes, we hold a Class A General Engineering Contractor's license, and we've earned an A+ rating with the Better Business Bureau along with thousands of satisfied clients: general contractors, builders, city agencies, property managers, real estate agents, and homeowners.
Everything is done with our own teams and equipment. That vertical integration means we control the schedule, stand behind the workmanship, and can take your project from soil analysis and permitting through excavation, installation, and final inspection with a single call.
What customers say
“Will never use another company after dealing with A1 today. Our tech Phillip was AMAZING. He went above and beyond and was extremely polite and professional. They are lucky to have a worker like Phillip. I will recommend them to everybody. They definitely have mine and my families business from now on!”
“Max, Alex, and Phillip were great! They used their mini excavator to dig up my old redwood septic tank and pump it out. They were very careful not to harm it. They were happy to answer questions. The tank was under my lawn Max was careful to dig up the lawn so as they could replant the grass like you would sod. They were friendly and worked together like a team. I am very satisfied with their work and would gladly use them again.”
“Was cleaning septic tank. Got call to get at home before appointment time we loved it. Give sometips how to keep tank clean. Reasonable price. Very friendly and help person to get tank empty and everything clean no mess left.”
Serving Modesto, Oakdale, Escalon, Ceres, Salida, Riverbank, Turlock, Stockton.
2125 Wylie Dr. Suite #6, Modesto, CA 95355
License CA Contractor's License 1020305
2125 Wylie Dr. Suite #6, Modesto, CA 95355
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