Project lead
County Department of Water Supply
The County of Maui Department of ʻŌiwi Resources is currently working with Group 70 International, Inc. (G70) to develop the Lahaina Royal Complex Master Plan. The project scope includes hydrology and water policy; wildfire resiliency and risk planning; biological and ecological assessment; cultural landscape architecture; community engagement protocol; transportation circulation planning; topographical survey; cultural and archaeological studies; soils and geotechnical studies; and boundary mapping.
Provide your comments on the draft Action Plan online, by mail or in-person at the Lahaina Resource Center or Kāko‘o Maui Relief & Aid Services Center.

A Maui Fire Department truck
Community Quote from Long-Term Planning Recovery Survey
By improving fire flow capacity of the water system, this project will improve public safety and support the County’s Department of Water Supply in fulfilling its core mission of reliably delivering safe potable water for generations. This project will immediately benefit Lahaina in the long-term recovery process and protect the community from future wildfire events. The Maui Fire Chief’s Wildfire After-action Report dated 4/18/2024 recommended that recovery efforts include increasing the Lahaina water system’s ability to meet fire flow requirements.
This project will update the capacity of water infrastructure in Lahaina by improving pipeline and facility deficiencies to meet current hydraulic criteria to address low fire flow residual pressures in the water system. The County’s Department of Water Supply identified the most critical capacity deficiencies in the water system to be insufficient storage and undersized waterlines. Priority projects to mitigate deficiencies include:
This project addresses the infrastructure upgrades necessary to meet capacity needs, but water source development is also a critical component of addressing capacity deficiencies. This will require collaboration with the Commission on Water Resource Management (CWRM) to secure the necessary water use permit allocations to accommodate new water source development in West Maui.
$47.8 million
County Department of Water Supply