🗺️ A New Tool to Support Cesspool Conversion Planning

HWEA members working on cesspool conversion projects now have access to a new Act 217 Sewer Expansion Overlay Tool. This interactive mapping tool helps identify high-density cesspool areas where centralized sewer expansion may be technically and economically feasible.

The tool provides project-area information including planning status, feasibility tier, and relevant planning documentation—helping project teams and homeowners better understand potential sewer expansion opportunities.

👉 Explore the Act 217 Sewer Expansion Overlay Tool and learn more about this new planning resource.

Please note: This is a planning-level screening tool, not an engineering study, and does not confirm funding, approvals, prioritization, or future sewer availability.

Sewer Expansion Overlay Tool: Act 217 Sewer Expansion Overlay – Hawaii Sea Grant

Cesspool Prioritzation Tool: Hawai‘i Cesspool Hazard Assessment & Prioritization Tool – Hawaii Sea Grant