Collection Systems: From inspection to rehabilitation

Sept. 14, 2023
This webinar is now available for on demand viewing.

This webinar was originally held on September 14, 2023, and is now available for on demand viewing. 

Duration: 1 Hour

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The American Society of Civil Engineers’ report card assigned the U.S. Wastewater infrastructure a D+, indicating a significant need for improvement. Wastewater collection systems operate in harsh environments, which leads to deterioration of the system over time. Beyond corrosion, inflow and infiltration from rainfall can enter the collection system, causing backups, overflows, and higher treatment costs.

Addressing the challenges of these systems is not a quick fix or an overnight solution. Instead, it requires utility owners to implement active programs to perform maintenance and renewal strategies such as Capacity Management Operations and Maintenance Programs (CMOM). One of the initial steps to addressing the issue is understanding the collection system, which leads to asset management and investigations typically known as Sanitary Sewer Evaluation Studies (SSES).

In this webinar, utility owners will learn about various field techniques — flow monitoring, physical asset inspections, CCTV, smoke testing, and cleaning strategies — that can be used to inspect and evaluate sewers. But the work does not end after inspection. They also will identify the options available for infrastructure renewal, such as open-cut replacement and trenchless solutions like Cured in Place Pipe (CIPP), pipe bursting, and slip line construction. And perhaps most importantly, utility owners will learn how to employ strategies that improve the lifespan of collection systems to build truly generational infrastructure.


Derek Schwanke, PE
West Texas Infrastructure Team Lead

With more than 15 years of experience, Derek has focused his career on public infrastructure assets stemming from managing and conducting condition assessment and asset management studies, capital planning and modeling, infrastructure rehabilitation, and new improvements.  In Derek’s current role he leads the infrastructure team overseeing projects in North Texas and throughout West Texas.  Derek also currently serves as the co-chair for the Water Environment Association of Texas (WEAT) Collection Systems State Level Technical committee where he has coordinated with state regulators for the upcoming rule changes to the Texas Commission of Environmental Quality (TCEQ) Rule 217 which focuses on collection systems. Derek also contributed to the Water Environment Federation (WEF) publication Technologies for CMOM Activities in Wastewater Collection Systems that was released in the Spring of 2022.

In addition to Derek’s professional career, he is married with two daughters, enjoys outdoor activities such has hunting, mountain biking, camping, and he also has a side passion as a drummer/recording and mixing engineer/producer for his heavy metal band known as Privity.