Southland JV Awarded the Winnipeg North End Treatment Plant Upgrade - Biosolids Facilities Progressive Design - Build Project

Key Terms

progressive design-build technical

A progressive design-build is a project delivery method where an owner hires a single team of designers and builders early and lets the project details, scope and price evolve together as design work advances. Think of it like hiring a contractor to sketch and refine a house with you step by step, rather than agreeing a fixed plan up front; it can speed delivery, improve coordination, and reduce costly surprises. Investors care because it can improve schedule certainty and cost control while shifting more accountability for delivery to one party.

backlog financial

A backlog is the amount of work or orders that a company has received but hasn't completed yet. It’s like a restaurant with many dishes to serve; the backlog shows how many orders are still waiting to be finished. It matters because a large backlog can indicate strong demand or potential delays in delivering products or services.

biosolids technical

Biosolids are the nutrient‑rich organic solids left after sewage is treated to remove pathogens and pollutants; they are often processed and applied to soil as a fertilizer or soil conditioner. For investors, biosolids matter because they create markets and regulatory obligations for wastewater utilities, waste‑management companies and agricultural suppliers, and carry both revenue potential (recycling and energy recovery) and risks from environmental rules, contamination concerns and public opposition.

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GRAPEVINE, Texas--(BUSINESS WIRE)-- Southland Holdings, Inc. (NYSE American: SLND and SLND WS) (“Southland”) announced today that Red River Biosolids Partners, a joint venture comprised of Aecon, MWH Constructors, and Oscar Renda Contracting of Canada, a Southland subsidiary, in which each partner holds a 33.3% interest, has completed the collaborative development phase and has been awarded an approximately $815 million CAD contract by the City of Winnipeg for the North End Water Pollution Control Centre (“NEWPCC”) Sewage Treatment Plant Upgrade – Biosolids Facilities progressive design-build project in Manitoba. Stantec is providing design services. Southland’s share of the contract value, approximately $272 million CAD, will be added to its Civil segment backlog in the third quarter of 2026.

During the development phase, Red River Biosolids Partners advanced design and cost elements of the project. The construction phase will now begin to deliver new biosolids facilities and modifications to the existing facilities. Upgraded facilities operations are expected to commence in the fourth quarter of 2030, with final construction completion anticipated in the second quarter of 2031.

The plant is Winnipeg’s largest and oldest wastewater treatment facility, responsible for treating 70% of the city’s wastewater and all biosolids. The upgrades will help meet environmental regulations, protect waterways, and expand water treatment capacity, while supporting employment and economic growth.

Further information about the project is available on the City of Winnipeg’s website.

About Southland

Southland is a leading provider of specialized infrastructure construction services. With roots dating back to 1900, Southland and its subsidiaries form one of the largest infrastructure construction companies in North America, with experience throughout the world. The company serves the bridges, tunneling, communications, data centers, transportation and facilities, marine, steel structures, water and wastewater treatment, and water pipeline end markets. Southland is headquartered in Grapevine, Texas. For more information, please visit Southland’s website at www.southlandholdings.com.

About Red River Biosolids Partners

Red River Biosolids Partners is a joint venture comprised of Aecon Group Inc. (TSX: ARE) (“Aecon”), MWH Constructors Canada Ltd. (“MWH Constructors”), and Oscar Renda Contracting of Canada Inc., a Southland subsidiary, in which each partner holds a 33.3% interest.

Forward-Looking Statements

This press release contains “forward-looking statements” within the meaning of the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. Forward-looking statements are neither historical facts nor assurances of future performance. Instead, they are based only on Southland’s current beliefs, expectations and assumptions regarding the future of Southland’s business, future plans and strategies, projections, anticipated events and trends, the economy and other future conditions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict and many of which are outside of Southland’s control. Southland’s actual results and financial condition may differ materially from those indicated in the forward-looking statements. Therefore, you should not rely on any of these forward-looking statements. Any forward-looking statement made by Southland in this press release is based only on information currently available to Southland and speaks only as of the date on which it is made. Southland undertakes no obligation to publicly update any forward-looking statement, whether written or oral, that may be made from time to time, whether as a result of new information, future developments or otherwise.

View source version on businesswire.com: https://www.businesswire.com/news/home/20260716908807/en/

Southland Contacts:
Alex Murray
Vice President, Corporate Development & Investor Relations
amurray@southlandholdings.com

Source: Southland Holdings, Inc.