Septic pumping in Glenn County, California costs $400-$750 (avg $550). A new septic system installation costs $7,950-$15,900. USDA soil data rates 0.3% of county soils as suitable for septic absorption fields. Approximately 1,388 homes in this county use septic systems.
Septic System Costs in Glenn County
| Service | Low | Average | High |
|---|---|---|---|
| Pumping / Cleaning | $400 | $550 | $750 |
| Routine Inspection | $300 | $450 | $650 |
| Real Estate Inspection | $550 | $800 | $1100 |
| Minor Repair | $1,000 | $1,400 | $6,950 |
| Conventional Installation | $7,950 | $11,350 | $15,900 |
| Aerobic System Installation | $14,900 | $21,300 | $29,800 |
| Drainfield Replacement | $7,950 | $11,350 | $15,900 |
| Perc Test | $1,200 | $1,700 | $2,400 |
Cost estimates based on regional market data for Glenn County, California. Actual costs depend on system type, site conditions, and provider.
Soil & Septic Suitability in Glenn County
Drainage Class
Well drained
Hydrologic Group
C
Unique Soil Types
111
Avg Bedrock Depth
2.2 ft
Dominant Soil Types
| Soil Series | Coverage | Drainage | Hydro Group |
|---|---|---|---|
| Millsholm | 2453 | Somewhat excessively drained | C |
| Altamont | 1792 | Well drained | C |
| Gullied land | 1279 | - | - |
| Unnamed | 1166 | - | - |
| Columbia | 1146 | Moderately well drained | C/D |
Septic Tank Absorption Field Suitability
USDA NRCS rates soil suitability for septic absorption fields across this county:
Overall rating: Very limited
Groundwater & Water Table in Glenn County
Monitoring Wells
18
Avg Depth to Water
9.6 ft
Median Depth
3.3 ft
Shallowest Recorded
1.2 ft Shallow Risk
Moderate water table depth. Some sites may require modified systems or mound systems.
Source: USGS National Water Information System. Based on 63 measurements from monitoring wells.
Septic Regulations & Permits in Glenn County
State Regulatory Body
California State Water Resources Control Board
Inspection Required for Home Sale
Yes
Nitrogen Reduction Areas
Yes
Advanced Treatment Required
In designated areas
OWTS Policy (2012). Inspection required before property transfer.
Contact the Glenn County health department for current permit requirements, fees, and approved system types.
Septic System FAQ for Glenn County
How much does septic pumping cost in Glenn County?
Septic pumping in Glenn County, California typically costs between $400 and $750, with an average of $550. 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 Glenn County?
A conventional septic system installation in Glenn County typically costs $7,950-$15,900. An aerobic treatment unit (ATU) costs $14,900-$29,800. 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 Glenn County?
Yes. Virtually all counties in California 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 Glenn County health department for current requirements and fees.
What soil types are in Glenn County and how do they affect septic systems?
Glenn County has predominantly Millsholm, Altamont, Gullied land soils. The dominant drainage class is Well drained with hydrologic group C. The USDA rates 0.3% of surveyed soils as "Not Limited" for septic absorption fields, 3.6% as "Somewhat Limited", and 96.1% as "Very Limited".
Is a septic inspection required when selling a home in Glenn County?
Yes. California requires a septic system inspection as part of the property transfer process. This typically involves a certified inspector evaluating the tank, drainfield, and all system components. The inspection cost in this area averages $800. If the system fails inspection, repairs or replacement may be required before the sale can proceed.
How often should I pump my septic tank in Glenn 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 California have mandatory pumping schedules — check with your local health department.
Does the water table in Glenn County affect septic systems?
Yes. The average groundwater depth in Glenn County is approximately 9.6 feet, based on USGS monitoring data from 18 wells. While this is sufficient for many conventional systems, sites with lower elevations or seasonal water table fluctuations may require alternative system designs. A site-specific evaluation is always recommended.
Can I install a conventional septic system in Glenn County?
It depends on your specific site. USDA soil data shows that 96.1% of soils in Glenn County are rated "Very Limited" for septic absorption fields, while only 0.3% 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 ($1200-$2400) and soil evaluation are required before the county will approve a system design.
How long does a septic system last in Glenn County?
A well-maintained septic system in Glenn 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 (Glenn 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.
Data last updated: 2026-04-13