Septic pumping in Honolulu County, Hawaii costs $550-$1100 (avg $800). A new septic system installation costs $10,900-$21,850. Approximately 7,319 homes in this county use septic systems.
Septic System Costs in Honolulu County
Service
Low
Average
High
Pumping / Cleaning
$550
$800
$1100
Routine Inspection
$400
$600
$850
Real Estate Inspection
$750
$1050
$1450
Minor Repair
$1,350
$1,950
$9,500
Conventional Installation
$10,900
$15,600
$21,850
Aerobic System Installation
$20,500
$29,250
$40,950
Drainfield Replacement
$10,900
$15,600
$21,850
Perc Test
$1,650
$2,350
$3,300
Cost estimates based on regional market data for Honolulu County, Hawaii. Actual costs depend on system type, site conditions, and provider.
Groundwater & Water Table in Honolulu County
Monitoring Wells
45
Avg Depth to Water
160.6 ft
Median Depth
103.5 ft
Shallowest Recorded
-8.3 ft Shallow Risk
Water table depths in this county are generally favorable for conventional septic systems.
Contact county health department for specific requirements.
Contact the Honolulu County health department for current permit requirements, fees, and approved system types.
Septic System FAQ for Honolulu County
How much does septic pumping cost in Honolulu County?
Septic pumping in Honolulu County, Hawaii typically costs between $550 and $1100, with an average of $800. 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 Honolulu County?
A conventional septic system installation in Honolulu County typically costs $10,900-$21,850. An aerobic treatment unit (ATU) costs $20,500-$40,950. Costs include the tank, drainfield, permits, and labor.
Do I need a permit for a septic system in Honolulu County?
Yes. Virtually all counties in Hawaii 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 Honolulu County health department for current requirements and fees.
What soil types are in Honolulu 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 Honolulu 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. With approximately 7,319 septic systems in Honolulu County, there are many local providers offering regular pumping services.
How long does a septic system last in Honolulu County?
A well-maintained septic system in Honolulu 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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