Septic pumping in Kauai County, Hawaii costs $500-$1000 (avg $700). A new septic system installation costs $9,500-$19,050. Approximately 3,518 homes in this county use septic systems.
Septic System Costs in Kauai County
Service
Low
Average
High
Pumping / Cleaning
$500
$700
$1000
Routine Inspection
$350
$500
$700
Real Estate Inspection
$650
$950
$1350
Minor Repair
$1,200
$1,700
$8,350
Conventional Installation
$9,500
$13,600
$19,050
Aerobic System Installation
$17,850
$25,500
$35,700
Drainfield Replacement
$9,500
$13,600
$19,050
Perc Test
$1,450
$2,050
$2,850
Cost estimates based on regional market data for Kauai County, Hawaii. Actual costs depend on system type, site conditions, and provider.
Groundwater & Water Table in Kauai County
Monitoring Wells
17
Avg Depth to Water
174.5 ft
Median Depth
103.9 ft
Shallowest Recorded
30 ft
Water table depths in this county are generally favorable for conventional septic systems.
Contact county health department for specific requirements.
Contact the Kauai County health department for current permit requirements, fees, and approved system types.
Septic System FAQ for Kauai County
How much does septic pumping cost in Kauai County?
Septic pumping in Kauai County, Hawaii typically costs between $500 and $1000, with an average of $700. 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 Kauai County?
A conventional septic system installation in Kauai County typically costs $9,500-$19,050. An aerobic treatment unit (ATU) costs $17,850-$35,700. Costs include the tank, drainfield, permits, and labor.
Do I need a permit for a septic system in Kauai 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 Kauai County health department for current requirements and fees.
What soil types are in Kauai 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 Kauai 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 Hawaii have mandatory pumping schedules — check with your local health department.
How long does a septic system last in Kauai County?
A well-maintained septic system in Kauai 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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