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Workers installing large concrete drainage pipes beside a highway at sunset, using a crane to lift them into place.Workers installing large concrete drainage pipes beside a highway at sunset, using a crane to lift them into place.

Sewerage, Drainage and Irrigation

Reliable sewerage, drainage and irrigation systems are essential to public health, environmental protection and livable cities. CDM Smith partners with clients to plan, design and deliver integrated water infrastructure solutions that perform under today’s demands while preparing for future growth and climate uncertainty. 

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Integrated engineering for essential water systems 

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CDM Smith delivers integrated sewerage, drainage, and irrigation engineering services that support public health, environmental protection and sustainable urban development. Our teams combine technical expertise, advanced analysis and practical design to create systems that are reliable, efficient and resilient to climate and growth pressures. From wastewater conveyance and stormwater management to irrigation and treated sewage effluent networks, we help clients plan, design and implement infrastructure that performs over the long term while meeting regulatory and operational requirements. 

Comprehensive sewerage and wastewater systems 

We design and upgrade sewerage networks, pumping stations, and treatment-related infrastructure to support safe conveyance, regulatory compliance, and long-term system performance across urban and regional developments. 

Drainage and stormwater engineering 

Our teams deliver drainage solutions that manage surface runoff, reduce flood risk, and integrate with existing infrastructure. Using advanced modeling and design standards, we help clients address pluvial flooding, capacity constraints, and climate-driven extremes. 

Irrigation and treated sewage effluent (TSE) networks 

CDM Smith designs efficient irrigation and TSE distribution systems that support landscaping, agriculture and public realm development—balancing water conservation, operational efficiency and regulatory requirements. 

End-to-end delivery and integration 

We support projects from early studies and master planning through detailed design, tender documentation and construction support. Our integrated approach ensures coordination across utilities, roads and surrounding developments. 

Related Practices  

Supporting practices that enhance project outcomes across the lifecycle. 

Water Conveyance

Whether you’re concerned about keeping existing water conveyance assets healthy or building new ones, we’re here to help you find the answers you need.

Flood Protection 

Integrated flood protection solutions that safeguard communities, infrastructure, and economies against climate-driven flood risks.

Water Resource Infrastructure and Resiliency

Forward-thinking water resources planning, design construction and operations means making smarter investments that lower life-cycle costs and provide multiple benefits.

Construction Supervision

With decades of experience and meticulous attention to detail, our experts deliver contract‑compliant, defect‑free outcomes aligned with your project objectives.

Hydraulic Modeling and Engineering

Advanced hydraulic modeling and engineering solutions that support resilient, efficient, and data-driven infrastructure design.
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Ready to Take the Next Steps? 

We love collaborating with passionate individuals and organizations. If you're interested in joining our team, check our careers page for open positions or internships.  

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