Crescent City Wastewater Treatment Plant Expansion

Crescent City, California

MWA designed the Master Plan and comprehensive upgrades to the Crescent City Water Pollution Control Facility, a complex of multiple wastewater treatment buildings sited on two acres on the Northern California coast.

Part of a phased expansion, on a 20 and 50-year basis, the plant improvements treat 7 MGD (million gallons per day) and will accommodate a peak capacity of 17.5 MGD. MWA was responsible for the public process, the original Area Plan alongside the City’s primary park, assistance with the new site Master Plan and design of all new structures on this constricted site.

The facility responds to California Coastal Commission requirements and is adjacent to a historic lighthouse. Envisioned as a “Coastal Woodland”-style campus, the buildings were designed to fit into their coastal surroundings and visually screen the existing plant.

Client: City of Crescent City
Cost: $42 Million
Completion: Lab Completed in 2009/ MBR, Operations, De-watering and Site work 2010

Photos: Paul Critz
Rendering: MWA Architects