Wastewater Treatment

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Wastewater treatment solutions

Wastewater isn’t just a challenge—it’s a resource. At Stantec, we help clients unlock wastewater treatment potential with advanced, cost-effective solutions. As regulations tighten and systems grow more complex, we guide you from assessment to innovation using tools like hydraulic modeling, condition analysis, and resource audits to optimize performance and resilience.

Backed by global design expertise, we deliver high-performance, compliance-focused advanced water treatment solutions and resource recovery strategies. We help wastewater treatment plants boost capacity and efficiency using densification tools to deliver scalable solutions without major construction. 

We don’t just treat water—we’re redefining wastewater management. We lead in process intensification and technologies like densified activated sludge (DAS), biological nutrient removal (BNR), and membrane aerated biofilm (MABR). Our innovations lead the way in process intensification for wastewater treatment plant upgrades and sustainable treatment. We are also at the forefront of thermal hydrolysis process (THP) technology and the circular economy with innovative energy recovery, turning biogas into plant power and transforming biosolids into valuable soil amendments.

By focusing on emerging contaminants, digital tools, and sustainable practices, we’re redefining the wastewater utility of the future. Our mission: simplify treatment, empower operators, and build intelligent systems that adapt and scale with change.

Ideas

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How can water risk assessments build redundancy in your water supply?

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Progressive design-build delivers a high-risk, high-reward bioenergy facility

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Integrating approaches to maximize water resiliency—some call it One Water

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One Water in action

Our One Water approach centers on turning wastewater into something useful. Our wastewater purification process includes treatment systems that recover nutrients, generate energy, and produce reuse-ready effluent. Advanced tools like special filters, oxidation, and smart monitoring make the process efficient, adaptable, and reliable. Water reuse systems close the loop reducing demand on freshwater sources, building resilience, and helping communities be better prepared for climate challenges. Read More

Sustainability through biosolids management

Stantec helps communities manage biosolids—the organic material leftover from treating wastewater—by finding safe, sustainable ways to process and dispose of it. This work reduces waste, cuts carbon emissions, and can create renewable energy. The team also tackles tough issues like PFAS and other emerging contaminants, while exploring ways to recover energy and nutrient reuse. The goals? Zero waste, regulatory compliance, and protecting the environment and public health. Read More

Biological nutrient removal (BNR)

BNR is a process that uses natural microbes to remove nitrogen and phosphorus from wastewater. Our teams help utilities use both standard and advanced BNR systems—like partial denitrification and anammox (PdNA)—to save energy, cut costs, and reduce carbon emissions. Our designs are built for flexibility, support sustainable goals, and help utilities stay ahead of future regulations. Read More

Membrane aerated biofilm reactor (MABR)

MABR is a compact wastewater treatment technology that saves energy by delivering oxygen directly to biofilms through special, gas-permeable membranes. It improves nitrification, uses less blower energy, and works well even under tough conditions for resilient nutrient removal. Our teams are helping advance MABR into wider use by testing it at full scale and combining it with densification techniques and data-driven design tools. Read More
The most appropriate, cost-effective solution the first time, every time.
800+
Plants
10+
Billion
50+
Alternative Delivery Projects
We have designed wastewater treatment facilities around the globe, ranging in size from 0.25-mgd to more than 800-mgd.
Plants designed by our team treat over 10 billion gallons of wastewater per day, every day.
P3. DB. CMAR. No matter how your treatment plant project is delivered, we can help.

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