Project lead

Department of Environmental Management

Project Website

Brief Description:

Upsizing critical segments of the Lahaina wastewater collection system is necessary to accommodate increased wastewater flows from disaster related permanent housing development and rebuilding efforts in Lahaina.

Milestones:

March 2026: Project Conditionally Awarded CDBG-DR Funds

May 2026: Design Started

‍

Project type

Infrastructure

CDBG-DR

OWL

BACK TO ALL PROJECTS

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Sewer Upsizing for Lahaina Housing

Project lead

Department of Environmental Management

participation

Complexity

Cost

Phase

Kuleana

County

State

County & State

Private

timing

1-2 years

6+ years

3-5 years

Estimated
completion

Lahaina Royal Complex Master Plan

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.

View Presentation

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.

Submit OnlineSubmit by mail (English)Submit by Mail (Ilocano)Submit by mail (Tagalog)Submit by mail (spanish)

Purpose

Project Description

Interdependencies and Roadblocks

Next Steps

March 2026: Project Conditionally Awarded CDBG-DR Funds

May 2026: Design Started

‍

Contact

Project Details

Cost Estimate:

Existing Funding Sources:

Project Lead:

Department of Environmental Management

Potential Funding Sources:

Project Partners:

Alignment with West Maui Community Plan (WMCP)

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Central Maui Regional WWRF (Waikapu)

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Kehalani Force Main-Gravity Sewer

Cost

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NATURAL & CULTURAL RESOURCES

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INFRASTRUCTURE

COMMUNITY PLANNING

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Lahaina Recycled Water 700-ft Storage

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NATURAL & CULTURAL RESOURCES

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INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

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Lahaina Replacement of Wastewater Pump Stations #5 & #6

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NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

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Lahaina Recycled Water Force Main-WWPS

Cost

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NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

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Honolua H1 Development Phase

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COMMUNITY PLANNING

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Lahaina Drainline Replacement

Cost

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NATURAL & CULTURAL RESOURCES

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Damaged Roads and Sidewalks

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

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Damaged Fed-Aid Roads

Cost

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NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

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Papalaua to Aki and Kuhua to Komo Mai Connector

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HOUSING

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North-South Collector Phase 1 (Liloa Dr)

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HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Luakini Street Extension

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

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Keawe Street Improvements

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

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West Maui Senior Center

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

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Pioneer Mill Building

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

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Homeless Resource Center Facilities

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Emergency Generators for Critical Water Infrastructure

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

One Water Lahaina

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Front Street Apartments Phase 1

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Hale Makua Workforce Housing

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Front Street Apartments Phase 2

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Kaiaulu O Napili

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Lahaina Surf

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Hale Mahaolu Eono

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Weinberg Court Apartments

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Komohana Hale Apartments

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Westside Affordable Housing

Cost

complexity

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Lahaina Royal Complex

Long-Term (6+ years)

Long-Term (6+ years)

Cost

High

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Affordable Rental Housing Programs

Short-Term (1-2 years)

Short-Term (1-2 years)

Cost

TBD

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Creation of a Lahaina Memorial

Short-Term (1-2 years)

Short-Term (1-2 years)

Cost

TBD

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Lahaina Harbor Restoration

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

High

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Energy Resilience and Redundancy

Short-Term (1-2 years)

Short-Term (1-2 years)

Cost

Low

complexity

Medium

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Enhance Emergency Communication Networks

Short-Term (1-2 years)

Short-Term (1-2 years)

Cost

High

complexity

Medium

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Ke Ola Hou

Long-Term (6+ years)

Long-Term (6+ years)

Cost

Medium

complexity

Medium

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Kuhua Street Extension

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

High

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Lahaina Business Project

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

Medium

complexity

Low

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Lahaina Bypass Phase 1C

Long-Term (6+ years)

Long-Term (6+ years)

Cost

High

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Maui Emergency Management Agency (MEMA) Advancement Program

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

Low

complexity

Medium

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

National Historic Landmark District Update

Short-Term (1-2 years)

Short-Term (1-2 years)

Cost

Low

complexity

Low

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

R-1 Recycled Water Expansion

Long-Term (6+ years)

Long-Term (6+ years)

Cost

High

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Rebuild the West Maui Senior Center

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

TBD

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Revegetating and Reforesting Lahaina and Kula

Long-Term (6+ years)

Long-Term (6+ years)

Cost

TBD

complexity

Medium

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Stormwater Resilience and Flood Risk Management

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

High

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Street Connectivity and Extensions

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

High

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Wai and Watershed Recovery Planning

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

TBD

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Water Source Development

Long-Term (6+ years)

Long-Term (6+ years)

Cost

High

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Wildfire Risk Reduction and Mitigation

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

High

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Agriculture Planning & Long-Term Food Security

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

High

complexity

Medium

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Asset Management and Acquisitions Program

Short-Term (1-2 years)

Short-Term (1-2 years)

Cost

Low

complexity

Low

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Building Resilience Incentives

Short-Term (1-2 years)

Short-Term (1-2 years)

Cost

TBD

complexity

Medium

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Community Facilities

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

TBD

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Comprehensive Environmental Monitoring and Sampling Plan (CEMSP)

Short-Term (1-2 years)

Short-Term (1-2 years)

Cost

Medium

complexity

Low

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Economic Innovation and Development

Short-Term (1-2 years)

Short-Term (1-2 years)

Cost

High

complexity

Medium

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Green Workforce Development

Long-Term (6+ years)

Long-Term (6+ years)

Cost

Low

complexity

Medium

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Healthcare Service Expansion

Short-Term (1-2 years)

Short-Term (1-2 years)

Cost

TBD

complexity

Medium

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Homeowner Support Programs

Short-Term (1-2 years)

Short-Term (1-2 years)

Cost

TBD

complexity

Low

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Infrastructure Assessment and Improvement Studies

Short-Term (1-2 years)

Short-Term (1-2 years)

Cost

Low

complexity

Low

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Inter-Island Ferry System

Long-Term (6+ years)

Long-Term (6+ years)

Cost

TBD

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Lahaina Water Infrastructure Firefighting Capacity

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

High

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Long-Term Disaster Case Management Program (DCMP)

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

High

complexity

Medium

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Lahaina Water Infrastructure Resilience and Hardening

Mid-Term (3-5 years)

Mid-Term (3-5 years)

Cost

High

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Preservation, Revitalization, and Reconstruction of Historic and Cultural Spaces

Long-Term (6+ years)

Long-Term (6+ years)

Cost

Medium

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

Wahikuli Subdivision Gravity Sewer System

Long-Term (6+ years)

Long-Term (6+ years)

Cost

High

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

West Maui Business Center (WMBC)

Short-Term (1-2 years)

Short-Term (1-2 years)

Cost

TBD

complexity

Medium

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

West Maui Greenway

Long-Term (6+ years)

Long-Term (6+ years)

Cost

High

complexity

High

NATURAL & CULTURAL RESOURCES

HOUSING

INFRASTRUCTURE

COMMUNITY PLANNING

ECONOMIC DEVELOPMENT

HEALTH & SOCIAL SERVICES

West Maui Hospital

Long-Term (6+ years)

Long-Term (6+ years)

Cost

High

complexity

High

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