Two profile pits
An excavator opens the ground so the soil is read in place, not sampled blind.
Soil & Perc Testing · Jefferson County
Soil & perc testing in Jefferson County
Profile-pit soil testing across Jefferson County — Front Range foothills at 5,500–9,000 ft — so your septic system is designed from what's actually in the ground, not a guess.
Two profile pitsLicensed evaluatorReg 43 soil designBedrock & groundwater depth
Every septic system in Jefferson County is designed off the soil — and the soil here is anything but uniform.
Jefferson County is steep foothill lots, exposed rock, and dense-tree wildfire-interface ground, and around Golden, Evergreen, Conifer two lots a hundred feet apart can call for very different systems. That's why the design starts with opening the ground and reading it.
We dig two profile pits with an excavator and log the real profile — texture, structure, and depth to bedrock or groundwater — the evaluation Jefferson County Public Health and your engineer design from under Colorado's Regulation 43. A percolation rate alone won't cut it on this ground.
Before you commit to a lot, run the address through SepticIQ for an instant read off the USDA survey — then we confirm it on site with the pits.
What we do
Licensed evaluation
Texture and structure logged by a qualified evaluator, the way Reg 43 requires.
Bedrock & water depth
How much usable soil you have over refusal or groundwater — the make-or-break number in Front Range foothills.
Feeds your design
The log hands straight to your engineer to size the system and the soil treatment area.
SepticIQ · Instant plan-based estimate
Already have engineered septic or OWTS plans? Upload the PDF for an instant Colorado installation estimate, then have Tri-Lakes, a licensed Colorado OWTS installer, price and build the system.
Soil & Perc Testing in Jefferson County — questions
How much does a soil / perc test cost in Jefferson County?
Roughly $3,000–$5,000 — it takes an excavator on site to open two profile pits, read by a licensed evaluator. We quote it after a look at access and the lot.
Do you do a percolation test or a profile pit?
Profile pits. In Colorado the design comes from a soil profile evaluation — texture, structure, and depth to bedrock or water — not a perc rate alone. Jefferson County Public Health permits on that basis.
Can I get a soil estimate before I test?
Yes — SepticIQ reads the USDA soil survey for your Jefferson County address instantly and sizes a likely system. The pit then confirms it.
More in Jefferson County
Your project in Jefferson County
Tell us about the lot and we'll map the path — feasibility, design, permit, and build.
Get a Quote