
C & G Earthworks
Mancos, COMontezuma County
demolition, driveways, erosion control, excavation, foundations, grading
15 years in business

Septic Systems in Colorado
Conventional, chamber, mound and aerobic systems installed to the approved design, with the health department inspection before backfill.
Project guide
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 Mancos, Cripple Creek, Grand Junction, Colorado Springs, Durango, Cañon City, though most crews travel well beyond their home city.
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.
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.
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.
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.
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
196 contractors found

Mancos, COMontezuma County
demolition, driveways, erosion control, excavation, foundations, grading
15 years in business

erosion control, excavation, grading, land clearing, septic systems, site prep

driveways, excavation, foundations, septic systems, site prep

Colorado Springs, COEl Paso County
excavation, foundations, grading, land clearing, septic systems, site prep
7 years in business

driveways, erosion control, excavation, foundations, grading, land clearing
12 years in business


demolition, driveways, excavation, foundations, grading, pond water management


concrete cutting removal, excavation, septic systems, trenching underground

Leadville North, CO
decorative concrete, driveways, excavation, foundations, grading, land clearing

Colorado Springs, COEl Paso County
driveways, excavation, grading, land clearing, septic systems, trenching underground
12 years in business


Commerce City, COAdams County
demolition, driveways, excavation, grading, septic systems, trenching underground
22 years in business

Mancos, COMontezuma County
erosion control, excavation, foundations, grading, land clearing, septic systems
5 years in business

driveways, excavation, hauling trucking, retaining walls, septic systems, site prep


demolition, excavation, foundations, grading, septic systems, site prep
44 years in business

Boulder, COBoulder County
concrete flatwork, demolition, excavation, foundations, grading, hauling trucking
69 years in business

Clifton, COMesa County
concrete flatwork, driveways, excavation, foundations, grading, land clearing
30 years in business

Divide, COTeller County
driveways, excavation, foundations, grading, hauling trucking, land clearing
20 years in business
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