ROH §43-10.3
Wastewater fees for new homes and additions
Read the official text at honolulu.gov ↗People building new homes or enlarging existing ones must pay a wastewater system fee. The fee is based on the number of equivalent single-family dwelling units (ESDUs) in the project. The fee amount is listed in Appendix 43-C.
contractorsdevelopershomeowners
The ordinance, as written (Honolulu County) — Residential wastewater system facility charges
A copy, taken August 22, 2026. The version published by Honolulu is the one that governs, and it may have changed since. Check it before relying on anything here.
(a) Each applicant for a residential building permit for a new structure, or for an enlargement of an existing structure, shall be required to pay a wastewater system facility charge based on the total number of equivalent single-family dwelling units in the project to be constructed, provided that the director shall reduce the amount of the facility charge upon consideration of the applicant’s financial contribution for backup facilities constructed or to be constructed for the project and dedicated or to be dedicated to the city.
This requirement applies to those new applicants for service and to those existing structures that are subject to liability under § 43-10.1 .
(b) The following weights are assigned to the various categories of residential developments for wastewater system facility charge purposes:
Description
Number of ESDUs Per Unit
Single-family dwellings, duplex-unit dwellings, triplexes, and quadraplexes
1.0
Multiple-family dwellings (five units or more), condominiums, townhouses, retirement homes, mobile homes, and housing projects
0.7
Accessory dwelling units
0.7
(c) The applicable wastewater system facility charge per ESDU is set forth in Appendix 43-C of this chapter.
Editor’s note:
Amendments made to § 43-10.3 take effect on October 1, 2025, in accordance with Ord. 25-27 .
Published by the City and County of Honolulu through American Legal Publishing.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.