King County Wastewater Treatment continues working on ways to reduce combined-sewer overflows (CSO) into local waterways. One of its next projects is a million-gallon storage tank in southeast West ...

Des Moines finished a project started in the 2000s to get rid of its sewer infrastructure that was at risk of releasing untreated wastewater into the river.

The Red Hook tank — formerly known as the Head End tank — will catch 8 million gallons of rainwater and combined sewer overflow during storms, preventing it from flowing right back into the ...

The years-long projects to fix Des Moines’ sewer system are almost done. The Ingersoll Run Project is wrapping up its final ...

The city is one of only two in California and four on the West Coast still operating a combined sewer system—a century-old design where ... combined sewer overflows, or CSOs, can spill into ...

Results thus far are favorable as the end approaches for a required five-year study designed to gauge the effectiveness of the Altoona Water Authority’s Combined Sewer Overflows, according to a ...