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Lahaina Water Infrastructure Resilience and Hardening
Inform
High
High
Implementation
County
State
County & State
Private
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Lahaina Water Treatment Facility
“Improve water infrastructure; restore historic waterways and water use dictated by community; control of water returned to land and people; remove private water system; local resource management and generational knowledge.”
Community Quote Neighborhood Workshop
Purpose
All three of Lahaina’s available water supply points have existing deficiencies that, if failure were to occur, could trigger water shutoffs to Lahaina and exasperate the recovery and rebuilding effort. The Maui Fire Chief’s Wildfire After-action Report dated 4/18/2024 recommended that recovery efforts include increasing the reliability of the Lahaina water system’s ability to meet fire flow requirements and have backup supplies, which will be addressed by this project.
Project Description
This project will increase the reliability of the Lahaina water system’s ability to meet fire flow requirements and have backup supplies by targeting the most severe infrastructure vulnerability and risks within the system. The highest priority projects include:
- Replacement of non-functional fire suppression system at Lahaina Water Treatment Facility
- Rehabilitation of exposed raw waterline and finish waterline at the Lahaina Water Treatment Facility
- Installation of permanent on-site emergency generators and upgrade of outdated motor control systems at Kanahā Wells #1 and #2 and Waipuka Wells #1 and #2
- Replacement of outdated backwash filter necessary for water treatment
- Installation of Mahinahina Water Treatment Facility backup well to provide backup supplies for up to 6 months
- Installation of emergency generator at backup well site at the Mahinahina Water Treatment Facility
Interdependencies and Roadblocks
A resilient and hardened water supply system is essential to restoring the community, creating jobs and building a resilient future. This project will also support the County’s Department of Water Supply in fulfilling its core mission of reliably delivering safe drinking water for generations.
Next Steps
- Design is complete and the project is shovel-ready
Project Details
Cost Estimate:
Lahaina Water Treatment Facility Replacements: $1.4 million Kanahā Wells Emergency Generator and Motor Control Center Upgrades: $2.5 million Waipuka Wells Emergency Generator and Motor Control Center Upgrades: $2.5 million Mahinahina Backup Well: $6.23 million Mahinahina Water Treatment Facility Backwash Tank Replacement: $1.9 million
Existing Funding Sources:
Project Lead:
County Department of Water Supply
Potential Funding Sources:
- EPA State and Tribal Assistance Grants
- EPA Disaster Supplemental Funding
- Department of Interior-DOH State Revolving Fund
- EPA Midsize and Large Drinking Water System Infrastructure Resilience and Sustainability Program
- FEMA Hazard Mitigation Grant Program
- HUD Community Development Block Grant Program
- US Bureau of Reclamation Drought Resiliency Projects Grant Program
Project Partners:
- County Department of Fire and Public Safety
- County Department of Public Works
Alignment with West Maui Community Plan (WMCP)
- Goal 2.1 Ready and resilient systems
- Action 1.28 Preserve and maintain existing reservoir and water storage infrastructure within West Maui for fire protection capabilities and agricultural uses