09/01/2024
ARTECH is a company that can do design and installation.
Contact # 808-320-2241 and email addess: [email protected]
Hawaii's Act 125, passed in 2017, requires all cesspools in the state to be converted. The Hawaii State Department of Health (HDOH) Wastewater Branch oversees and permits all onsite wastewater systems
INDIVIDUAL WASTEWATER SYSTEMS
Individual Wastewater Systems (IWS) are on-site systems for treating and disposing wastewater. Approved IWS treatment equipment are: septic tank, aerobic treatment unit, passive aerobic systems that still require a septic tank (Familiar with Infiltrator Technologies and Presby).
Additional Information
Requirements for Review Process of IWS
Large Capacity Cesspools Memorandum
Forms
Application Form
Owner’s Certification Form
Site Evaluation Form
IWS Construction Inspection Report (Revised 10-6-22)
Contractor Certification Form
Large Capacity Cesspool (< 1000 gpd) Backfilling Final Completion Report
Existing Cesspool Information Form
Homeowner Resources
How do I upgrade my existing cesspool or replace my failing cesspool or septic system?
1st step: Hire a Hawaii licensed civil engineer to help you develop a plan for a new individual wastewater system (IWS). An IWS is either a septic or aerobic treatment unit system. You can check if an engineer is a licensed civil engineer by using the Department of Commerce and Consumer Affairs’s (DCCA) Professional Vocational Licensing Search Tool to find the engineer’s record, check the License Class, and then the License’s status.
2nd step: Your licensed engineer will submit plans to the Wastewater Branch for review and approval. Plans may be submitted online by your engineer to wastewater.ehawaii.gov . Below are a list items that need to be submitted with the IWS plans.
Application Form
Owner’s Certification Form
Site Evaluation Form
3rd step: After plans are approved by the Wastewater Branch, you must hire a licensed contractor holding an A, C-9, C-37, C-37a or C-43 license. You can also check this by using the DCCA’s Professional Vocational Licensing Search Tool to find the contractor’s record, check the License Class, and then the License’s status. Hiring a contractor holding a license other than what is required will not be accepted by the Wastewater Branch.
4th step: Your licensed civil engineer should be monitoring the construction of the IWS. At the end of construction, your engineer is required to submit a final construction inspection report with a completed contractor certification form to the Wastewater Branch.
IWS Construction Inspection Report
Contractor Certification Form
5th step: Your licensed engineer submits the completed IWS Construction Inspection Report with Contractor Certification Form to the Wastewater Branch. The Wastewater Branch will issue an approval to use letter to your engineer if there are no discrepancies with the IWS Construction Inspection Report and Contractor Certification Form. The Wastewater Branch will not be able to issue you a final approval to use of your new IWS unless these two forms are submitted by your licensed engineer. Your new IWS will be in non-compliance if the Wastewater Branch does not issue an approval to use of your system.
