Septic Systems in Logan County, CO

Regulations, costs, soil data & local providers

Pop. 21,528 ~16.8% on septic ~1,447 septic homes Well drained soil

Septic pumping in Logan County, Colorado costs $350-$700 (avg $500). A new septic system installation costs $6,900-$13,800. USDA soil data rates 17.2% of county soils as suitable for septic absorption fields. Approximately 1,447 homes in this county use septic systems.

Septic System Costs in Logan County

ServiceLowAverageHigh
Pumping / Cleaning$350$500$700
Routine Inspection$250$350$500
Real Estate Inspection$500$700$1000
Minor Repair$900$1,250$6,000
Conventional Installation$6,900$9,850$13,800
Aerobic System Installation$12,900$18,450$25,850
Drainfield Replacement$6,900$9,850$13,800
Perc Test$1,050$1,500$2,100

Cost estimates based on regional market data for Logan County, Colorado. Actual costs depend on system type, site conditions, and provider.

Soil & Septic Suitability in Logan County

Drainage Class
Well drained
Hydrologic Group
C
Unique Soil Types
94
Avg Bedrock Depth
1.7 ft

Dominant Soil Types

Soil SeriesCoverageDrainageHydro Group
Nunn 767 Well drained C
Manter 684 Moderately well drained A
Julesburg 566 Well drained A
Wages 560 Well drained B
Satanta 548 Somewhat poorly drained C

Septic Tank Absorption Field Suitability

USDA NRCS rates soil suitability for septic absorption fields across this county:

Not Limited (Good)17.2%
Somewhat Limited24.2%
Very Limited58.6%

Overall rating: Very limited

Source: USDA NRCS Soil Survey Geographic Database (SSURGO)

Groundwater & Water Table in Logan County

Monitoring Wells
15
Avg Depth to Water
35.9 ft
Median Depth
14.5 ft
Shallowest Recorded
2.5 ft Shallow Risk

Water table depths in this county are generally favorable for conventional septic systems.

Source: USGS National Water Information System. Based on 96 measurements from monitoring wells.

Septic Regulations & Permits in Logan County

State Regulatory Body
Colorado DPHE
Inspection Required for Home Sale
No / Varies
Nitrogen Reduction Areas
No
Advanced Treatment Required
In designated areas

Varies by county. Many counties have transfer-of-title inspection requirements.

Contact the Logan County health department for current permit requirements, fees, and approved system types.

Septic System FAQ for Logan County

How much does septic pumping cost in Logan County?
Septic pumping in Logan County, Colorado typically costs between $350 and $700, with an average of $500. Costs vary by tank size (1,000-1,500 gallons is typical), ease of access, distance from the pumping company, and how full the tank is. Most homeowners should pump their tank every 3-5 years.
How much does a new septic system cost in Logan County?
A conventional septic system installation in Logan County typically costs $6,900-$13,800. An aerobic treatment unit (ATU) costs $12,900-$25,850. Given the predominantly well drained soils in this area, some sites may require alternative system types. Costs include the tank, drainfield, permits, and labor.
Do I need a permit for a septic system in Logan County?
Yes. Virtually all counties in Colorado require a permit before installing, repairing, or replacing a septic system. The permit process typically involves a soil evaluation or percolation test, system design by a licensed professional, application to the county health department, and one or more inspections during installation. Contact the Logan County health department for current requirements and fees.
What soil types are in Logan County and how do they affect septic systems?
Logan County has predominantly Nunn, Manter, Julesburg soils. The dominant drainage class is Well drained with hydrologic group C. The USDA rates 17.2% of surveyed soils as "Not Limited" for septic absorption fields, 24.2% as "Somewhat Limited", and 58.6% as "Very Limited".
How often should I pump my septic tank in Logan County?
The EPA recommends pumping your septic tank every 3-5 years for a typical household. The exact frequency depends on tank size, household size, and water usage. A 1,000-gallon tank serving a family of 4 should generally be pumped every 3 years. Some counties in Colorado have mandatory pumping schedules — check with your local health department.
Can I install a conventional septic system in Logan County?
It depends on your specific site. USDA soil data shows that 58.6% of soils in Logan County are rated "Very Limited" for septic absorption fields, while only 17.2% are "Not Limited." This means many properties will require alternative systems such as mound systems, pressure distribution systems, or aerobic treatment units. A percolation test ($1050-$2100) and soil evaluation are required before the county will approve a system design.
How long does a septic system last in Logan County?
A well-maintained septic system in Logan County typically lasts 25-30 years, though some components may need attention sooner. The concrete septic tank itself can last 40+ years, while the drainfield — the most critical and expensive component — usually lasts 15-25 years depending on soil conditions (Logan County has predominantly well drained soils). Regular pumping every 3-5 years and avoiding excess water usage are the two most effective ways to extend system life.

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Quick Facts

Population21,528
Est. Septic Homes1,447
Avg Pumping Cost$500
Drainage ClassWell drained
Septic SuitabilityVery limited

Common Septic Services

Pumping: $350-$700
Inspection: $250-$500
Repair: $900-$6,000
Installation: $6,900-$13,800

Data last updated: 2026-04-13