Header Image

Understanding The Sewer Collection System

To truly understand the wet weather issue and how it affects the southwestern Pennsylvania region, it is important to first understand how the municipal sewage collection system operates.  Learn more about the history of the sewage infrastructure, which interconnects 83 communities to one publicly owned treatment plant—ALCOSAN—how the 4,100-mile sewage system actually transports waste, and the impact of inflow, infiltration and overflows on the quality of our water resources.