Operational System
The diagram below (larger view) depicts MSD’s operational system. The collection
system is made up of an extensive system of pipes
that receive flow from homes, businesses, and runoff
from older stormwater pipes that are combined with
sewer collection pipes. Stormwater not conveyed to
the treatment plants is managed to reduce flooding
and backups, but does result in CSOs. This collection
system brings wastewater to the second part of MSD’s
operations: the wastewater treatment system. These
facilities treat wastewater and release effluent back into
the region’s creeks and rivers. The waste removed in
treatment is referred to as sludge, which is incinerated at
two MSD facilities.
Note: Click the image above for a larger view.
The system delivers important community and public benefits by collecting and treating raw sewage. As we embark on Project Groundwork, the system will increase these benefits by reducing sewer overflows and helping to improve the economic vitality of our communities.