Solutions

Water & wastewater construction in Ontario

Aerial view of treatment tanks at a Burlington water and wastewater construction site in Ontario.

ASCO Construction builds and upgrades complex water and wastewater projects. Our team works with municipalities, engineers, and public sector clients to deliver treatment plants, pumping stations, and civil infrastructure that communities rely on every day.

Many of these projects take place in active facilities where operations must continue during construction. ASCO plans and phases work carefully to maintain service, protect public safety, and prevent disruptions.

Our services

Water & wastewater infrastructure projects are regulated and highly technical. They require careful planning, experienced management, and strong safety controls.

Our leadership team has managed major municipal infrastructure projects including large-scale treatment plant upgrades and new facility construction.
See how our services can help.

Process building construction

Facility expansions and upgrades

Pre-construction planning and budgeting

Pumping stations and underground infrastructure

Structural, mechanical, electrical, and process systems

Complete commissioning and startup support

THE ASCO DIFFERENCE

Why ASCO for water and wastewater projects

ASCO provides full lifecycle construction services

Collaborative problem-solving and constructability expertise
COR-certified safety program
Experienced and dedicated commissioning specialists on staff
Extensive experience working within active operating treatment facilities
Robust quality management and commissioning programs for complex treatment systems
Self-perform capability for critical scopes
Zero or minimal unplanned process interruptions during construction.

Our leadership team has managed major municipal infrastructure projects, including large-scale treatment plant upgrades and new facility construction.

Key projects

How ASCO manages the risks of water & wastewater infrastructure construction

Water and wastewater projects involve complex systems, strict regulations, and critical public infrastructure. ASCO’s experience and structured planning help manage these challenges effectively.

Risk

Disrupting plant operations during construction: Treatment plants must remain operational during upgrades.

How ASCO mitigates this risk

Phased construction planning and close coordination with plant operators maintain continuous service.

Risk

Regulatory and environmental compliance: Infrastructure projects must meet strict environmental standards.

How ASCO mitigates this risk

Careful planning, regulatory coordination, and quality control ensure compliance throughout construction.

Risk

Technical complexity of treatment systems: Mechanical, electrical, and process systems must work together seamlessly.

How ASCO mitigates this risk

Experienced teams coordinate installation, testing, and commissioning to ensure reliable performance.

Risk

Unknown conditions in existing infrastructure: Older facilities and underground systems can create unforeseen challenges.

How ASCO mitigates this risk

Early risk assessment, flexible planning, and experienced project leadership help resolve issues quickly.

Meet your ASCO expert

If you’re planning a water or wastewater project, we can help guide you from early planning through construction.

Private sector projects

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Luke Klippenstein, P.Eng
District Manager Central & Western Ontario

Become a Building Partner

ASCO works with specialized subcontractors, suppliers, and engineering consultants on water and wastewater infrastructure projects across Ontario.

FAQs – Water and wastewater infrastructure

Construction crew installing a large concrete tank for water and wastewater construction in Ontario.
When should a contractor be involved in a municipal water project?

It depends on the project delivery model that best suits the owner's objectives. In municipal infrastructure, fixed-price contracts remain the most common, with the contractor typically engaged after the design is complete. While this approach often provides competitive pricing, it can be less flexible when unexpected challenges arise during construction.

 

For owners seeking greater collaboration, delivery models such as Progressive Design-Build and Integrated Project Delivery involve the contractor much earlier in the planning and design process. Early contractor involvement can improve constructability, strengthen cost and schedule certainty, and reduce project risk. ASCO has extensive experience delivering successful projects under both traditional and collaborative delivery models.

Can construction of a water or wastewater infrastructure project take place while a plant is operating?

Yes. Many of ASCO's water and wastewater projects involve expanding or upgrading facilities that must remain fully operational throughout construction. These projects require detailed planning, careful sequencing, and close collaboration with the owner's operations team to maintain continuous service.

 

Our proven construction process is specifically designed to minimize operational disruptions while safely delivering complex upgrades to critical infrastructure.

Where does ASCO build water and wastewater infrastructure?

ASCO delivers water and wastewater infrastructure projects throughout Ontario and has the capability to support projects across Canada. With offices in Eastern, Central, and Western Ontario, we continue to expand our presence while pursuing long-term growth into additional Canadian provinces.

Why is ASCO considered a leading general contractor in water and wastewater construction?

For nearly 40 years, ASCO has delivered complex water and wastewater infrastructure projects with a focus on safety, quality, collaboration, and accountability. Our experienced teams understand the unique technical, operational, and regulatory challenges these facilities present, allowing us to anticipate risks and develop practical solutions.

 

We don't just build infrastructure—we work alongside owners, consultants, and operators to solve complex problems and deliver facilities that perform as intended. When we say, "We Own the Work," it reflects our commitment to standing behind every project we deliver.

What makes water and wastewater infrastructure projects different from other types of construction?

Water and wastewater infrastructure is among the most technically demanding sectors in construction. These projects combine the complexities of heavy civil, industrial process, structural, mechanical, electrical, and commercial construction, often within operating facilities where maintaining continuous service is critical.

 

They also require careful management of environmental protection, public health, regulatory compliance, and worker safety. Successfully delivering these projects demands specialized expertise, detailed planning, and strong collaboration. It's why many in the industry say, "If you can build a water or wastewater treatment plant, you can build anything."

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