HI SB2155

Requires the Department of Health to amend administrative rules limiting individual wastewater systems to a maximum of five dwellings or dwelling units per system.

Caps the total number of bedrooms connected to a single individual wastewater system at six bedrooms.

Addresses Hawaii's estimated 83,000-88,000 cesspools that discharge approximately 50-55 million gallons of untreated wastewater into the ground daily.

Responds to ongoing challenges with the cesspool conversion mandate established by Act 125 (2017), which has progressed slowly despite tax credits and other legislative measures.

Aims to balance environmental protection, groundwater contamination prevention, and housing needs, particularly workforce housing in rural agricultural areas.