HCC §5F-3-1
When the plumbing rules apply and when they don't
Read the official text at hawaiicounty.gov ↗This section says the county's plumbing rules apply to new plumbing and to major changes or reinstallation of existing plumbing in flood zones. They don't apply to buildings exempt from flood rules, those with a flood variance, or plumbing that existed before November 8, 1993, as long as it follows flood rules.
contractorsdevelopershomeownerslandlordstenants
The ordinance, as written (Hawaiʻi County) — General applicability
A copy, taken August 21, 2026. The version published by Hawaiʻi County is the one that governs, and it may have changed since. Check it before relying on anything here.
(a) The provisions of this article shall apply to the: installation of any new plumbing system; or the renovation and major alteration, addition, or reinstallation of any existing plumbing system within a special flood hazard area as identified by chapter 27, Hawai‘i County Code. All installations shall comply with chapter 27, Floodplain Management. (b) The provisions of this article shall not apply to the following: (1) Any plumbing system serving a building or structure exempted from chapter 27; (2) Any plumbing system serving a building or structure which has been granted a flood control variance pursuant to article 2, chapter 27; or (3) Any plumbing system lawfully existing prior to November 8, 1993, subject to the provisions of chapter 27. (2020, ord 20-61, sec 6.) 5F-3-1
Published by the County of Hawaiʻi Office of the County Clerk.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.