S O U T H C A R Y WAT E R
R E C L A M AT I O N FAC I L I T Y
The South Cary WRF, constructed in 1988, has a biosolids dryer that produces
pelletized fertilizer called "enviro gems." Located on West Lake Road, the
facility serves residents and businesses in southern Cary and discharges
exceptionally-treated water into Middle Creek, a tributary of the Neuse River.
12 WA S T E WAT E R A N N UA L R E P O R T 2 0 2 0 – 2 0 2 1
PERMIT PARAMETER FY 2021 PERMIT LIMIT UNITS
Effluent Flow 5.65 12.8 MGD
Total Phosphorus 0.26 2.0 Quarterly Avg. mg/L
Total Suspended Solids <2.5 30.0 Monthly Avg. mg/L
Biochemical Oxygen Demand <2.0 5.0-Summer Monthly Avg. mg/L
Total Nitrogen 28,923 180,210/Year lbs
Fecal Coliform <1.0 200-Monthly Avg. #/100 ml
Dissolved Oxygen 7.4 >= 5.0 Daily Avg. mg/L
Ammonia <0.05 1.0-Summer Monthly Avg. mg/L
pH 7.2 >6.0 and <9.0 Standard Units S.U.
