

Septic Systems in Colorado
Septic Systems contractors in Colorado
Conventional, chamber, mound and aerobic systems installed to the approved design, with the health department inspection before backfill.
Project guide
Hiring septic systems contractors in Colorado
Septic contractors install and replace the tank, distribution box and drain field that treat wastewater on properties without sewer. Nothing goes in the ground until a soil evaluation or percolation test has been done and the county or state health department has approved a system design; the installer builds to that design and the inspector looks at the open trenches before they are covered. Conventional gravel-and-pipe drain fields are the least expensive where soil drains well, but heavy clay, high water tables and small lots push jobs toward chambers, sand mounds, drip dispersal or an aerobic treatment unit, each with a different price and maintenance schedule. Most states license septic installers separately from general contractors, and many require a pumping and inspection record at property sale.
GradeLine lists 196 septic systems contractors that serve Colorado.Compare their work and equipment, then confirm availability and service area before requesting a quote.
Listed businesses are based in , Pagosa Springs, Idaho Springs, Colorado Springs, Greeley, Silver Cliff, though most crews travel well beyond their home city.
What septic systems work costs
A conventional gravity system on well-draining soil typically runs $5,000 to $12,000 installed. Chamber and pressure-dosed systems land in the $8,000 to $18,000 range, and mound or aerobic treatment systems commonly cost $15,000 to $35,000 because of the extra fill, pumps and electrical work. The soil evaluation and design usually add $500 to $2,000 up front.
Ranges are national and approximate; regional labor rates, material prices and site conditions move them in both directions.
Common projects
- New conventional and chamber systems for new construction and additions
- Drain field replacement, tank replacement and system upgrades when a field has failed
- Mound, aerobic and engineered systems for poor soil, high water table or small lots
What affects a quote
- System type and size, which the design sets by bedroom count and the soil evaluation
- Depth to seasonal high water table or rock, the amount of fill or sand required, and haul distances
- Tank material and access, pump and alarm components, and the cost of the design, permit and inspections
Septic Systems FAQ
What does septic systems work cost?
A conventional gravity system on well-draining soil typically runs $5,000 to $12,000 installed. Chamber and pressure-dosed systems land in the $8,000 to $18,000 range, and mound or aerobic treatment systems commonly cost $15,000 to $35,000 because of the extra fill, pumps and electrical work. The soil evaluation and design usually add $500 to $2,000 up front.
What should I share when requesting a septic systems estimate?
Pull together any existing septic permit or as-built drawing, the plot plan showing the well, house and property lines, the bedroom count, and any recent inspection or pumping record.
What can change the cost of septic systems work in Colorado?
The main cost items are system type and size, which the design sets by bedroom count and the soil evaluation; depth to seasonal high water table or rock, the amount of fill or sand required, and haul distances; tank material and access, pump and alarm components, and the cost of the design, permit and inspections. A site visit helps the crew see which ones apply.
Do septic systems projects in Colorado need permits?
Every state requires a permit for new or replacement septic systems, issued by the county or state health department after a soil evaluation and design review. Setbacks from wells, streams and property lines are fixed by code, and the system must be inspected before the trenches are backfilled.
Directory
Septic Systems contractors serving Colorado
196 contractors found


Markham Septic & Excavation
Pagosa Springs, COArchuleta County
driveways, excavation, grading, land clearing, retaining walls, septic systems

Mountain X
Idaho Springs, COClear Creek County
driveways, erosion control, excavation, foundations, grading, hauling trucking

Joe Frei Excavating
Colorado Springs, COEl Paso County
excavation, septic systems, trenching underground
30 years in business


AB Dirt Works, Inc.
demolition, driveways, excavation, foundations, grading, hauling trucking
20 years in business

Colorado Forestry & Earthworks, LLC
Silver Cliff, COCuster County
concrete cutting removal, driveways, erosion control, excavation, foundations, grading

Peak DirtWorks
Florissant, COPark County
concrete flatwork, demolition, driveways, excavation, foundations, grading
30 years in business



Tom Perry Contracting, LLC.
Fraser, COGrand County
demolition, driveways, erosion control, excavation, foundations, grading
25 years in business


R&S Sewer & Water Repairs
Northglenn, CO
excavation, pond water management, septic systems, trenching underground

Legacy Excavation LLC
Berthoud, CO
erosion control, excavation, retaining walls, septic systems, trenching underground


Mathews Excavating and Septic
Elizabeth, COElbert County
driveways, excavation, foundations, grading, pond water management, septic systems

Dirt dynamics excavating
Berthoud, COLarimer County
demolition, driveways, erosion control, excavation, foundations, grading

Bob Ames Excavating
Cascade-Chipita Park, COTeller County
demolition, driveways, erosion control, excavation, foundations, pond water management

Jen2 Excavating llc
demolition, excavation, foundations, grading, land clearing, pond water management

Iron Summit Excavating
Colorado Springs, COEl Paso County
concrete flatwork, driveways, erosion control, excavation, foundations, grading
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