Using proven technologies to provide reliable service, save money and protect the environment

Proactive maintenance, restoration and replacement of sewer system infrastructure is a high priority for the District. It helps ensure we continue to provide reliable, cost-effective service to our customers while at the same time protecting the environment. Sometimes, this requires creative problem solving to manage the system in the least impactful and most cost-effective way. This is especially true when working in sensitive areas like creek and wetland corridors or in busy urban areas.

Below you can learn about some innovative technologies that have recently been used on your sewer system: ice pigging, cured-in-place pipe, and other trenchless technologies.

Ice Pigging

Pipe "pigging" refers to a method of cleaning pipes by pushing pipe-sized devices, known as pigs, through the pipe to remove build-up. Traditional methods use various devices as pigs; however, sometimes those devices can get stuck and need to be dug out.


Cured-In-Place Pipe

Cured-in-place pipe (CIPP) technology was recently used to rehabilitate the trunk lines under Cougar Creek and in St. Johns along I-205.


Other Trenchless Technologies

The District recently used a variety of trenchless techniques on the Discovery Corridor Wastewater Transmission System (DCWTS) project.


Benefits of Using the Right Technology

By specifying the right type of technology for each particular job, the District is able to limit disruption to surrounding areas, keep the system operating efficiently and save rate payers money.