Ahousaht Wastewater Treatment and Marine Outfall Project


Ahousaht First Nation

Project Completion


Project Description

Ahousaht First Nation is located on Flores Island (25 min water taxi from Tofino). Tritech was General Contractor for the construction of the new Ahousaht Wastewater Treatment Plant, Pump Station, Forcemain, Marine Outfall and ancillary systems.

Tritech’s scope of work for this project included: The supply and installation of all equipment, instrumentation, and electrical systems for the construction of the following:
  • New Pump Station
  • Two WWTP buildings
  • Treatment Equipment: Headworks Equipment, Clarifiers, RBCs, UV
  • Sludge Processing Equipment: sludge pumps, dewatering equipment, sludge holding tank
  • Force mains and Outfall
The work for the project also included:
  • Excavating and backfilling the site
  • Modifications to the existing septic tank system
  • Installation of pipes, valves and pumps inside the new Treatment Plant building and pump station
  • Heating and ventilation
  • Electrical work including MCC, genset and facility grounding
  • Integration of the new instrumentation and controls into a SCADA system, testing and commissioning
  • Construction of underground pipe, manholes and electrical conduits between the new equipment and facilities; and
  • Environmental mitigation involving eelgrass transplanting and rock reef construction following outfall installation

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