Septic System Installation & Replacement in Northern California
County-permitted septic systems, leach field installation, and system replacements for residential and commercial properties across Tehama, Butte, Shasta, Glenn, Colusa, and surrounding areas.
For properties outside municipal sewer service areas, a properly designed and installed septic system is essential for safe, reliable wastewater treatment. Walberg, Inc. has been installing septic systems throughout Northern California since 1999, serving rural residential properties, agricultural operations, and commercial facilities across Tehama, Butte, Shasta, Glenn, Colusa, and surrounding areas. Our crews understand the specific soil conditions, county permitting requirements, and installation standards that apply in each jurisdiction we serve.
Septic system installation begins with the soil. The type of soil on your property determines what kind of system will work, how large the leach field needs to be, and where on the property the system should be placed. Our team works with county environmental health departments and engineers to ensure that percolation tests are properly conducted and that the system design matches the soil conditions and anticipated wastewater volume for your property. Whether the project calls for a conventional gravity system, a pressure distribution system, or a mound system, we have the experience and equipment to install it correctly.
Our septic installation work covers the complete scope from start to finish: excavation of the tank pit, setting the septic tank, installing inlet and outlet piping, constructing the leach field with proper distribution piping and gravel, backfilling and grading, and coordinating all required county inspections. Notable projects include the Andersen Ranch Septic Install, which required precise grading in challenging soil conditions and coordination with other site infrastructure work. We install systems for new construction, replace failing existing systems, and expand systems for properties with increased wastewater capacity needs.
As a licensed general engineering contractor with over 26 years of experience, Walberg, Inc. brings the technical knowledge and heavy equipment capability that septic work demands. Our fleet of excavators, dump trucks, and compaction equipment allows us to handle every aspect of the installation with our own forces, maintaining quality control throughout the project. We stand behind our work and ensure that every system we install will provide reliable service for decades. Our BBB A+ Accredited status and BuildZoom top 3% ranking in California reflect the quality and reliability our customers have come to expect.
What's Included
- New conventional gravity septic system installation
- Pressure distribution and mound system installation
- Leach field construction and distribution piping
- Septic tank delivery and setting
- System replacements for failing or undersized systems
- Leach field replacement and expansion
- Coordination with percolation testing and engineering
- County permit coordination and inspection scheduling
- Final grading and site restoration
- As-built documentation for county records
OUR PROCESS
How we deliver septic system installation.
Soil Evaluation & System Design Coordination
We coordinate with the county environmental health department and project engineer to ensure percolation tests are completed and the system design matches your property's soil conditions, lot layout, and anticipated wastewater volume.
County Permitting & Site Layout
We assist with the county septic permit application, stake the system layout on the property per the approved design, and schedule the required pre-installation inspection with the county environmental health inspector.
Excavation, Tank Set & Leach Field Construction
Our crew excavates the tank pit, sets the septic tank to proper elevation, installs inlet and outlet piping, constructs the leach field with distribution piping and gravel, and backfills in lifts. County inspections are coordinated at required stages before backfill.
Final Inspection, Grading & Turnover
We coordinate the final county inspection, complete finish grading over the system to ensure proper drainage away from the tank and leach field area, and provide you with as-built documentation showing the system location for future reference and maintenance.
EQUIPMENT
Equipment used on this service.
AREAS SERVED
Available across Northern California.
RELATED SERVICES
Other services you might need.
FAQ
Frequently Asked Questions
A new conventional gravity septic system in the Northern Sacramento Valley typically costs between $10,000 and $25,000 depending on the system size, soil conditions, and site complexity. Engineered systems such as pressure distribution or mound systems can cost more. We provide free estimates based on your specific property and system design.
The physical installation of a standard septic system typically takes two to four days once the permit is issued and materials are on hand. The permitting process, including soil testing and county review, can take several weeks to a few months depending on the jurisdiction. We help manage the permitting timeline to keep your project on schedule.
Signs of a failing septic system include sewage backing up into the house, soggy or foul-smelling areas around the leach field, slow drains throughout the home, and lush green grass growing over the leach field. If your system is exhibiting these symptoms, contact us for an evaluation and we can recommend repair or replacement options.
Septic system installation requires a permit from the county environmental health department. The permit process includes a site evaluation, percolation testing, system design review, and multiple inspections during installation. Walberg, Inc. coordinates the entire permitting process on your behalf.
Clay soil presents challenges for conventional leach fields because of its slow percolation rate. Depending on the perc test results, an engineered system such as a pressure distribution system or mound system may be required. Our team has extensive experience with the clay-heavy soils common in the Northern Sacramento Valley and can install the appropriate system type.