Financial Support Programs for Cesspool Conversion

The State of Hawaii has offered a variety of financial support programs that have occurred periodically to support the conversion or upgrade of Hawaii’s cesspool. Please consider checking this page regularly for information on any new financial support programs.

Ongoing Programs

2026 Cesspool Conversion Revolving Loan Program

Loans for cesspool conversion, please see the following resources for more information:

  • Act 120 of the 2026 Legislative Session (PDF )
    “low-interest or forgivable loans for eligible households to upgrade or convert existing cesspools in all counties to director of health approved wastewater systems or connect properties with existing cesspools to sewerage systems”
  • Hawaii Green Infrastructure Authority
    Program is under development but will be administered by the Hawaii Green Infrastructure Authority, please go to their website for more information as it becomes available. For questions regarding the program, please consider contacting the Hawaii Green Infrastructure Authority by phone or email .

Completed Programs

2023 Hawaii Cesspool Pilot Grant Program (CPGP)

$20,000 reimbursement grant for qualifying applicants.

2016-2020 Income Tax Credit for Qualified Cesspool

$10,000 tax credit for qualifying applicants.