Installing or replacing a septic system requires serious ground work — excavation for the tank, trenching for the drain field, grading the site after the install. BCF Earthworks handles the earthwork side of septic system services in Owensboro, KY and across Daviess County. We dig what needs to be dug, prepare the site, and leave the ground right when we're done.
Licensed and insured. Free estimates. Call 270-316-4658.

What We Do for Septic System Projects
Septic system installation is a multi-trade job. The licensed septic installer or engineer designs the system and handles the permitting and system compliance. BCF Earthworks handles the excavation and ground work that makes the installation possible.
Our scope includes:
- Septic tank excavation — digging the pit to the correct dimensions and depth for tank placement
- Drain field trenching — cutting the distribution trenches for the leach field
- Site prep and access — clearing and grading the area so equipment and materials can get to the site
- Backfill and site restoration — backfilling around the tank, compacting trench backfill, and regrading the surface after installation
- Pump tank and distribution box excavation — digging for all components that go in the ground
We work alongside your septic installer or plumbing contractor. If you don't have one lined up, call us — we can point you toward who handles septic installation in the Owensboro area.
New Septic System Installation — What the Excavation Involves
A new septic system installation starts with a percolation test (typically done by the installer or county health department) to determine where the system can go and what type of system is required. Once that's done and the system is designed, the excavation work begins.
For a conventional gravity system, that typically means:
- Tank excavation — a pit large enough to lower the tank into at the right elevation
- Outlet line trench — from the tank to the distribution box or pump chamber
- Drain field trenches — multiple parallel trenches at the specified depth, slope, and spacing
- Backfill — crushed stone in the trenches, then soil over the top, graded to drain away from the system
The excavation has to be done accurately. Tank elevation determines how everything downstream functions. Drain field trench depth and slope affect how the system drains. We work to the specs provided by the installer or engineer — not to a generic formula.
Septic System Replacement and Repair Excavation
Old systems fail. When a septic system reaches end of life or the drain field is saturated and failing, the system needs to be replaced or repaired. That almost always means excavation.
Common situations we handle:
- Failed drain field. The existing leach field is waterlogged and backing up. We excavate the old field and trench the new one — either in the same location after remediation or in an alternate field location.
- Tank replacement. Old concrete tanks crack, corrode, and collapse. We excavate around the old tank, help with removal, and prepare the excavation for the new tank.
- System expansion. Adding a bedroom or increasing the load on an existing system sometimes requires an additional drain field. We trench the expansion area to match the existing system specs.
If your system is having problems, your first call is to a licensed septic professional to diagnose the issue and design the fix. Once you know what needs to happen in the ground, call BCF Earthworks to handle the digging.
What Affects the Cost of Septic Excavation
- System size. The number of bedrooms and the design capacity determine tank size and drain field length — both affect the scope of excavation.
- Soil conditions. Rocky or clay-heavy soil digs slower than loose or sandy ground.
- Site access. A tight yard or heavily wooded area takes more time to work in than open ground.
- Depth requirements. Systems that need to go deep due to groundwater or site conditions require more excavation.
- Existing obstructions. Mature trees near the field area, existing structures, or underground obstacles affect the approach.
We don't quote off a formula. We come out, look at the site and the system design, and give you a straight number. Call 270-316-4658 for a free estimate.

What to Expect When You Call
Call or text 270-316-4658. Tell us:
- New installation or replacement
- Property location and approximate lot size
- Whether you have a system design or permit in hand (helpful but not required to get an estimate)
We come out, look at the site, and give you a free estimate on the excavation scope. The number we give you is the number you pay. We serve Owensboro, Henderson, Lewisport, Utica, and the surrounding counties in Western Kentucky.
Equipment We Use
We run a mini excavator for septic excavation. It gives us the precision needed for accurate tank pit depth and the reach to work in drain field areas without over-disturbing surrounding ground. The skid steer handles backfill spreading, grading, and surface restoration after the install is complete.
If your property also needs land clearing before the septic site is accessible, or site grading after the system is in, we handle that as part of the same project.
