Facilities

Combined Sewer Overflow
McDaniel Street CSO 400 Manford Rd., SW Atlanta, GA 30310

McDaniel Street CSO

The McDaniel Street CSO Facility is located at 400 Manford Road between Hillsdale Drive and Interstate 75 in a primarily residential area. Constructed in the mid-1980s, the McDaniel Street CSO Facility serves an East Area combined sewershed of approximately 968.0 acres and has a maximum overflow capacity of 660 million gallons per day (mgd). Grit is removed from dry weather flow (less than 7.5 mgd) before being routed to the South River Water Reclamation Center (WRC) for further treatment. All wet weather flow (7.5 mgd-660 mgd) is routed through the CSO Facility before being sent to the north branch of the South River. Flow (7.5 mgd-240 mgd) is disinfected and screened at the CSO Facility prior to capture and storage in a 6-million gallon concrete basin. Stored flow is returned to the sanitary system for advanced treatment at the South River WRC. Flow that exceeds screening capacity is disinfected and bypassed into a channel that leads to the north branch of the South River. Disinfection by sodium hypochlorite injection occurs upstream of the facility to ensure bacteria and pathogen destruction with minimal chlorine residual prior to final discharge. Sodium hypochlorite disinfection was implemented at this facility in January 2002. This included construction of a 3,300-square-foot (sf) chemical building that houses three 20,000-gallon hypochlorite storage tanks, two constant speed adjustable stroked chemical metering pumps for small dose demand events, and two 145-gpm centrifugal pumps for chemical transfer during high dose demand events.

CSO events for the past 30 days (ordered by most recent activity):