We’ve gathered reliable, up-to-date resources to help you better understand cesspool conversions, environmental impacts, state requirements, and available assistance. Whether you’re researching next steps or looking to dive deeper into Hawaiʻi’s wastewater transition, you’ll find what you need here.
Information You Can Trust. All in One Place.
State & County Regulations
Official state rules, county guidelines, and mapping tools that define how cesspool conversions are prioritized, permitted and carried out in Hawaiʻi.
01
Overview of the statewide plan, meeting notes, and recommendations guiding Hawaiʻi’s cesspool phaseout.
02
An interactive map showing priority areas and timelines to help homeowners understand conversion urgency by location.
03
The official state rules that define standards, permits, and design requirements for septic and ATU systems.
04
County-specific submittal, setback, and inspection guidance for designing and permitting onsite systems.
Environmental Impact & Public Health
Research and reports that explain how cesspools affect water quality, reef health, and safe drinking water across the islands.
01
State analysis of how cesspools affect groundwater, streams, and coastal waters, with findings by island and region.
02
Federal summary of how wastewater management influences coral reefs, marine life, and nearshore ecosystems.
Funding, Grants & Incentives
Details on financial assistance programs, from state grants and low-interest loans to tax incentives, to help homeowners manage conversion costs.
Information will be updated as opportunities arise
At this time, funding opportunities for cesspool conversions in Hawaiʻi are limited and often offered only through small pilot programs. We’re hopeful that more grants, loans, and financial relief options will become available as the statewide conversion mandate moves forward.
As these programs develop, we’ll keep this page updated with the latest information and links. And for every client we work with, our team actively checks available resources and assists with applications to ensure you don’t miss an opportunity for support.