HawaiiHawaii counties must allow rainwater systems on every property
Since July 1, 2026, Hawaii counties must allow property owners to collect and store rainwater for drinking and other uses, with limited health and water quality oversight.
What it does
Hawaii law requires counties to allow rainwater collection systems on all properties, whether or not they connect to county water. Counties may require limited oversight to protect health or water quality.
Argument forOwners may collect rainwater for drinking and household uses even when their property is not connected to county water.
Argument againstOwners may face added registration, notice, or inspection steps when counties find them necessary to protect public health or water quality.
More detail
Each county must allow rainwater catchment systems on all properties. This covers systems that collect and store rainwater for drinking or other uses, whether or not a property is connected to county water. Counties may require registration, inspection, or notice when necessary to protect public health or water quality. Counties may not unreasonably restrict or prohibit these systems. The law took effect July 1, 2026.
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Where it stands
- Introduced
- Adopted
Looking ahead
No hearings or votes scheduled.
History
- 2026
- Jul 9Received.Introduced
Environment & Energy