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Bill Summary · SB 472

Legislative bill overview

SB 472 addresses cesspool regulation and management in Hawaii. The bill was introduced by Senator Ron Kouchi and referred to the Health and Human Services (HHS) and Agriculture and Environment (AEN) committees, along with the Ways and Means Committee (WAM). As of the last action, the measure was deferred by both relevant committees and carried over to the 2026 Regular Session.

Why is this important

Hawaii has one of the highest concentrations of cesspools in the United States, with approximately 100,000 cesspools still in use. These systems pose significant public health risks through groundwater contamination and nitrogen leaching, particularly threatening Hawaii's drinking water sources and nearshore marine ecosystems. Legislation addressing cesspools directly impacts environmental protection, public health, and potentially property owner compliance costs.

Potential points of contention

  • Cost and timeline of conversion: Any cesspool phase-out or upgrade requirements will impose substantial financial burdens on property owners, raising questions about implementation deadlines and financial assistance programs
  • Agricultural and rural exemptions: Determining which properties should be exempt from requirements (particularly agricultural lands) versus subject to regulations creates equity and environmental management trade-offs
  • Government funding and liability: Whether state/county governments will subsidize conversions or place full responsibility on individual property owners remains a likely source of debate

Compiled from official sources — confirm details with the bill’s official record.

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