ENV's Division of Wastewater Engineering and Construction
Building a Cleaner Future for Oʻahu
The Division of Wastewater Engineering and Construction (WEC) plays a critical role in protecting the health, safety, and environment of the City and County of Honolulu by delivering well-planned, efficiently executed Capital Improvement Projects (CIPs) across the island.
Our Mission
To protect public health, preserve our environment, and support a thriving community by designing and constructing vital wastewater infrastructure.
Our Vision
Excellence in providing responsible, efficient solutions to best manage wastewater for a sustainable Hawai‘i.
What We Do
WEC plans, designs, and manages the construction of wastewater infrastructure across Oʻahu, including:
- Wastewater treatment plants
- Pump stations
- Force mains
- Gravity sewer systems
- Every project is designed with long-term performance, environmental compliance, and community impact in mind.
- We collaborate closely with internal partners at ENV and external stakeholders to ensure every project meets rigorous engineering, operational, environmental, and regulatory
From Planning to Completion
WEC oversees all phases of wastewater CIP projects:
Planning & Investigation
- Field visits, data collection, investigative studies
- Engineering reports and alternatives analysis
Design & Permitting
- Environmental clearances and permit processing
- Stakeholder coordination and cost estimation
- Development of plans and specifications
Construction & Oversight
- Contract management for private consultants and contractors
- On-site inspections and construction oversight
- Project closeout and post-construction evaluation
Through this work, WEC ensures Oʻahu’s wastewater infrastructure remains resilient, reliable, and ready to serve our growing communities—today and into the future.