call/text for a free quote: (530) 613-1905
Septic Installation & Replacement in Placer County, CA
Owner-operated septic excavation, installation, and repair for new builds and failing systems—coordinated with your septic designer, plans, and inspections. We’re certified to install advanced pretreated and alternative septic systems, including pressure distribution and drip fields.
Licensed CA
Contractor
Insured &
Bonded
Owner-
Operated
Referred by Septic Designers
call/text for a free quote: (530) 613-1905
Problems We Solve
New Build Septic Installs
Building on raw land? We install septic systems based on approved designs so your build can move forward without delays. Need a perc and mantle?
Septic Replacement + Leach Field Repairs
If your system is failing, outdated, or needs an upgrade for new requirements, we handle replacement work—and we also perform septic system and leach field repairs when appropriate for the site and design.
Advanced Pretreated & Alternative Systems
Not every property is a “standard gravity system.” We’re experienced with pretreated systems, pressure distribution, and drip field solutions for challenging lots and modern requirements.
What Our Septic Installation Work Includes
Septic work is all about doing the unglamorous steps right—layout, excavation, placement, and finish grade—so your system performs long-term and inspections go smoothly. We coordinate directly with designers, engineers, and inspectors so field work matches the plan—and we’re certified to install a wide range of modern septic system types.
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Excavation for septic tank area and system components (per plan)
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Trenching and placement for septic lines (per plan)
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Setting components to line and grade
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Backfill and rough grading to leave the site ready for the next phase
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Access planning so equipment gets in/out without tearing up the property
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Clear communication on what’s happening, what’s next, and what you need to provide
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Septic system and leach field repairs (when repair is feasible and approved)
Certified Pretreated & Alternative Septic Systems
We hold certificates in installing all pretreated systems, and we’re experienced with:
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AdvanTex
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Pumped / Pressure Distribution Systems
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Eljen
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Presby Septic Systems
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Geoflow & Geoflow Drip Field
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Hoot Filter Septic Systems
Our Septic Install Process
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Quick project review
You send the address + what you’re building + any septic plans/permits/photos you have.
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Site access + logistics planning
We confirm access, staging, and any terrain challenges (rock, slope, tight clearances).
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We excavate, place, and set components per the septic design—whether it’s a standard gravity setup or a pretreated/alternative system like pressure distribution or drip.
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We coordinate timing so the work, documentation, and inspection steps stay aligned — in Placer County, that means your PCEHD permit and inspection schedule.
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Backfill + rough grade
We leave the area stable, clean, and ready for the next trades.
Have plans already? Great—send them over. Not yet? Reach out early and we’ll help you understand what info is needed before excavation starts.
What Affects Septic Installation Cost in Placer County?
Here's the honest answer most sites won't give you: conventional gravity systems are rarely approved in the Placer County foothills anymore. Most lots need an engineered system — expect sand-filter and similar engineered designs to start around $20,000 installed. Advanced treatment systems like AdvanTex typically run $50,000 and up for the full install. The factors below move those numbers up or down.
Because Jacob runs the equipment himself, our bids regularly come in under the bigger outfits on the same design. Want the full picture — system types, ranges, and what drives the number? Read our 2026 septic cost breakdown for Placer County.
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Site access (driveway, gate width, turning radius, trailer access)
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Slope and working room around the install area
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Rock and excavation conditions
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Amount of material to export/import
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Distance from staging area to install location
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Project timing and inspection scheduling
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System type (standard gravity vs. pressure distribution vs. drip / pretreated systems)
Want a clear quote? Click Get Free Estimate and upload plans/photos—most delays happen when details are missing up front.
Placer County septic rules: what changed in 2025
In October 2025, Placer County updated its Local Agency Management Program (LAMP) — the rules that govern how septic systems are designed, permitted, and installed here. The update eased several restrictions and is aimed at lowering costs for property owners building on septic. The county permits three system types — standard gravity, low-pressure dose, and supplemental treatment — and which one your lot needs is determined by soil testing and groundwater, not preference. Permits go through Placer County Environmental Health (PCEHD), and your septic designer's plans drive everything we do in the field. Not sure how the new rules affect your project? Send us the address and we'll point you in the right direction.
Why Homeowners & Builders Choose Davidson Excavation
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Owner‑operator on site: Jacob runs the equipment on your job—not managing from a distance.
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Referred by septic designers: Precision field work that follows plans exactly.
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Foothill terrain knowledge: Practical understanding of Placer County rock, seasonal water, access, and build sequencing.
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Clear communication: Honest pricing, straightforward expectations, and free estimates.
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Licensed, insured, bonded: Professional work you can build on.