Septic pumping in Union County, Oregon costs $350-$700 (avg $500). A new septic system installation costs $6,650-$13,300. Approximately 2,515 homes in this county use septic systems.
Septic System Costs in Union County
Service
Low
Average
High
Pumping / Cleaning
$350
$500
$700
Routine Inspection
$250
$350
$500
Real Estate Inspection
$450
$650
$900
Minor Repair
$850
$1,200
$5,800
Conventional Installation
$6,650
$9,500
$13,300
Aerobic System Installation
$12,500
$17,850
$25,000
Drainfield Replacement
$6,650
$9,500
$13,300
Perc Test
$1,000
$1,450
$2,050
Cost estimates based on regional market data for Union County, Oregon. Actual costs depend on system type, site conditions, and provider.
Groundwater & Water Table in Union County
Monitoring Wells
2
Avg Depth to Water
25.2 ft
Median Depth
25.2 ft
Shallowest Recorded
24.5 ft
Water table depths in this county are generally favorable for conventional septic systems.
Some counties require time-of-transfer inspection. Authorization required for installers.
Contact the Union County health department for current permit requirements, fees, and approved system types.
Septic System FAQ for Union County
How much does septic pumping cost in Union County?
Septic pumping in Union County, Oregon 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 Union County?
A conventional septic system installation in Union County typically costs $6,650-$13,300. An aerobic treatment unit (ATU) costs $12,500-$25,000. Costs include the tank, drainfield, permits, and labor.
Do I need a permit for a septic system in Union County?
Yes. Virtually all counties in Oregon 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 Union County health department for current requirements and fees.
What soil types are in Union County and how do they affect septic systems?
Contact the county health department for soil evaluation requirements.
How often should I pump my septic tank in Union 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 Oregon have mandatory pumping schedules — check with your local health department.
How long does a septic system last in Union County?
A well-maintained septic system in Union 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. 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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