Wednesday, October 22, 2025
Annacis Island Wastewater Treatment Plant Expansion
Province: British Columbia
City/Region: Delta
7
Current Rank
Image Credit: Actual Media
Project End: (Phase 2 Early Works) 2025; (Outfall) 2025; (Phase 2 Final Works) 2032
Project Amount: $2 Billion
Industry Sector: Wastewater
Funding Source: Public
LEED Status: N/A
| Year | Rank |
|---|---|
| 2024 | 7 |
About The Project
THERE ARE over 20 projects planned as part of the onsite improvements of the Annacis Island Wastewater Treatment Plant. Key improvement projects include new trickling filters, secondary clarifiers, and a co-generation facility to make better use of green energy captured on site.
Detailed design of the remaining Phase 2 Final Works is underway with construction anticipated to commence in 2026. A new digester and biosolids dryer have been added to the expansion program.
Project Owner: Metro Vancouver
Project/Construction Manager: Hatch (outfall project); CDM Smith (Overall Construction Coordination)
Engineer: Brown and Caldwell, Klohn Crippen Berger, CDM Smith, WSP (Stage 5 expansion); CDM Smith, WSP (materials engineering and testing); Golder (WSP) (outfall); Wood (WSP) (consulting engineer/geotechnical studies & materials tester); McMillen Jacobs, Arup (design architect); EXP (geotechnical); Hatch (tunnel design review and outfall construction management); Colliers Project Leaders; Jacobs; CDM Smith; Associated Engineering (project and construction management/staff augmentation); Envirowest (environmental); McElhanney (consulting); Victaulic (supplier); E.S. Fox
Contractor: Phase 1 Substantially Complete; Maple Reinders Inc. (Phase 2 Gravity Thickeners and Aeration Tanks Retrofit); Bennett Mechanical Installations (Phase 2 Digester Heat Exchangers Upgrade); Pomerleau-Bessac General Partnership (outfall pipeline); Graham
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