Septic Systems in Stephens County, TX

Regulations, costs, soil data & local providers

Pop. 9,101 ~22.4% on septic ~815 septic homes Well drained soil

Septic pumping in Stephens County, Texas costs $250-$500 (avg $350). A new septic system installation costs $5,050-$10,100. USDA soil data rates 0% of county soils as suitable for septic absorption fields. Approximately 815 homes in this county use septic systems.

Septic System Costs in Stephens County

ServiceLowAverageHigh
Pumping / Cleaning$250$350$500
Routine Inspection$200$250$350
Real Estate Inspection$350$500$700
Minor Repair$650$900$4,400
Conventional Installation$5,050$7,200$10,100
Aerobic System Installation$9,450$13,500$18,900
Drainfield Replacement$5,050$7,200$10,100
Perc Test$750$1,100$1,550

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

Soil & Septic Suitability in Stephens County

Drainage Class
Well drained
Hydrologic Group
C
Unique Soil Types
51
Avg Bedrock Depth
2.5 ft

Dominant Soil Types

Soil SeriesCoverageDrainageHydro Group
Bastrop 264 Well drained B
Truce 230 Well drained C
Hensley 206 Well drained D
Wichita 200 Well drained C
Thurber 199 Moderately well drained D

Septic Tank Absorption Field Suitability

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

Not Limited (Good)0%
Somewhat Limited9.3%
Very Limited90.7%

Overall rating: Very limited

Source: USDA NRCS Soil Survey Geographic Database (SSURGO)

Septic Regulations & Permits in Stephens County

State Regulatory Body
Texas Commission on Environmental Quality (TCEQ)
Inspection Required for Home Sale
No / Varies
Nitrogen Reduction Areas
No
Advanced Treatment Required
In designated areas

On-Site Sewage Facility (OSSF) permits required. Authorized agents at county level.

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

Septic System FAQ for Stephens County

How much does septic pumping cost in Stephens County?
Septic pumping in Stephens County, Texas typically costs between $250 and $500, with an average of $350. 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 Stephens County?
A conventional septic system installation in Stephens County typically costs $5,050-$10,100. An aerobic treatment unit (ATU) costs $9,450-$18,900. 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 Stephens County?
Yes. Virtually all counties in Texas 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 Stephens County health department for current requirements and fees.
What soil types are in Stephens County and how do they affect septic systems?
Stephens County has predominantly Bastrop, Truce, Hensley soils. The dominant drainage class is Well drained with hydrologic group C. The USDA rates 0% of surveyed soils as "Not Limited" for septic absorption fields, 9.3% as "Somewhat Limited", and 90.7% as "Very Limited".
How often should I pump my septic tank in Stephens 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 Texas have mandatory pumping schedules — check with your local health department.
Can I install a conventional septic system in Stephens County?
It depends on your specific site. USDA soil data shows that 90.7% of soils in Stephens County are rated "Very Limited" for septic absorption fields, while only 0% 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 ($750-$1550) and soil evaluation are required before the county will approve a system design.
How long does a septic system last in Stephens County?
A well-maintained septic system in Stephens 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 (Stephens 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

Population9,101
Est. Septic Homes815
Avg Pumping Cost$350
Drainage ClassWell drained
Septic SuitabilityVery limited

Common Septic Services

Pumping: $250-$500
Inspection: $200-$350
Repair: $650-$4,400
Installation: $5,050-$10,100

Data last updated: 2026-04-13