KCC §25-9.3

Rules for building sewer laterals and cleanouts

Read the official text at ecode360.com ↗

This section sets the construction rules for sewer laterals that connect a building to the main sewer. It covers pipe size, slope, how the lateral ends at the property line, and the cleanout pipe. The County Engineer must approve certain parts and the connection before it is covered.

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The ordinance, as written (Kauaʻi County) — Construction

A copy, taken August 22, 2026. The version published by Kauaʻi County is the one that governs, and it may have changed since. Check it before relying on anything here.

All laterals shall be a minimum of six (6) inches in diameter and constructed at right angles to the main on a minimum grade of one percent (1%), unless excepted by the County Engineer. Each lateral shall terminate at the property line with a six (6) inch by four (4) inch reducer approved by the County Engineer, properly plugged. A four (4) inch or appropriate size cast iron long radius ninety (90) degree bend shall be connected to the reducer from which shall vertically extend the cast iron, PVC or ABS (Schedule 40) riser and cleanout to at least one (1) inch above ground except in a sidewalk or driveway area. In sidewalk or driveway areas, the cleanout shall be flush with the surface and shall be made of cast iron or brass body with recessed brass plug.Connection of the building sewer by the property owner to the riser shall not be backfilled or covered until approved by the County Engineer.

Read the official text at ecode360.com ↗as published Jan 1, 2026our copy taken Aug 22, 2026

The County of Kauaʻi publishes this code through eCode360 and states that it is provided for information only and should not be considered the official version of the Code.

LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.