Septic Systems in Hawaii County, HI

Regulations, costs, soil data & local providers

Pop. 200,629 ~9% on septic ~7,223 septic homes

Septic pumping in Hawaii County, Hawaii costs $500-$1000 (avg $700). A new septic system installation costs $10,000-$19,950. Approximately 7,223 homes in this county use septic systems.

Septic System Costs in Hawaii County

ServiceLowAverageHigh
Pumping / Cleaning$500$700$1000
Routine Inspection$400$550$750
Real Estate Inspection$700$1000$1400
Minor Repair$1,250$1,800$8,750
Conventional Installation$10,000$14,250$19,950
Aerobic System Installation$18,700$26,700$37,400
Drainfield Replacement$10,000$14,250$19,950
Perc Test$1,500$2,150$3,000

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

Groundwater & Water Table in Hawaii County

Monitoring Wells
5
Avg Depth to Water
65.9 ft
Median Depth
35 ft
Shallowest Recorded
-0.2 ft Shallow Risk

Water table depths in this county are generally favorable for conventional septic systems.

Source: USGS National Water Information System. Based on 423 measurements from monitoring wells.

Septic Regulations & Permits in Hawaii County

State Regulatory Body
Hawaii Department of Health/Environment
Inspection Required for Home Sale
No / Varies
Nitrogen Reduction Areas
No
Advanced Treatment Required
No

Contact county health department for specific requirements.

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

Septic System FAQ for Hawaii County

How much does septic pumping cost in Hawaii County?
Septic pumping in Hawaii 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 Hawaii County?
A conventional septic system installation in Hawaii County typically costs $10,000-$19,950. An aerobic treatment unit (ATU) costs $18,700-$37,400. Costs include the tank, drainfield, permits, and labor.
Do I need a permit for a septic system in Hawaii 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 Hawaii County health department for current requirements and fees.
What soil types are in Hawaii 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 Hawaii 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 7,223 septic systems in Hawaii County, there are many local providers offering regular pumping services.
How long does a septic system last in Hawaii County?
A well-maintained septic system in Hawaii 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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Quick Facts

Population200,629
Est. Septic Homes7,223
Avg Pumping Cost$700

Common Septic Services

Pumping: $500-$1000
Inspection: $400-$750
Repair: $1,250-$8,750
Installation: $10,000-$19,950

Data last updated: 2026-04-13