Efforts to keep stormwater from polluting Lake St. Clair with the help of loans managed by the Michigan Department of Environment, Great Lakes, and Energy (EGLE) recently received federal recognition.
The U.S. Environmental Protection Agency (EPA) recently announced that the Milk River Intercounty Drain Drainage District’s (MRIDDD) Combined Sewer Overflow (CSO) Retention Treatment Basin (RTB) and Recirculation Facility Upgrade Project received an honorable mention award
The award — for the Clean Water State Revolving Fund's George F. Ames Performance and Innovation in the SRF Creating Environmental Success (PISCES) program — recognizes CWSRF assistance recipients for exceptional projects and highlights them nationally.
The $40 million Clean Water State Revolving Fund (CWSRF) loan project focused on rehabilitating seven storm pumps, repairing two RTB's, and other upgrades and improvements to the facilities. EGLE manages the CWSRF loan program.
The Milk River drainage system accepts stormwater from the cities of Harper Woods and St. Clair Shores and combined sewage, a combination of wastewater and storm water, from the city of Grosse Pointe Woods. After a rainstorm, there may be more water entering the sewer system than the system can handle. When this happens, the sewer flow is diverted to the Milk River Pump Station and CSO treatment basin instead of backing up into residential basements located within the service area.
The incoming water initially gets large pieces of trash removed and then shocked with disinfectant to kill any disease-causing organisms before entering the treatment basins. The combined wastewater/stormwater is held in the basins until the flow in the sewer system is reduced enough to allow the extra flow to be transported to a wastewater treatment facility. If there is more water coming into the basin than it can hold, some of the partially treated water is released into the Milk River eventually finding its way to Lake St. Clair.
Upgrades also occurred at the recirculation facility downstream of the CSO RTB that included repairs to the forcemain, intake pipe, new pumps, and structural upgrades. The recirculation facility pumps water from Lake St. Clair to the Milk River CSO RTB to keep the drain flowing when the basin is not in use.
Much of the project is complete with the exception the storm pump rehabilitation project. The final two storm pumps are expected to be rehabilitated and put back into service in late 2021 or early 2022.
Visit EGLE's Water Infrastructure Financing Map to discover other CWSRF project locations.
Visit EPA's website to find additional information on EPA's PISCES Award or other nationally recognized projects.