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 11
PERMIT PARAMETER FY 2021 PERMIT LIMIT UNITS
Effluent Flow 6.31 12 MGD
Total Phosphorus 0.40 2.0 Quarterly Avg. mg/L
Total Suspended Solids <2.5 30.0 Monthly Avg. mg/L
Biochemical Oxygen Demand <2.0 4.1-Summer Monthly Avg. mg/L
Total Nitrogen 39,789 143,246/Year lbs
Fecal Coliform <1.0 200-Monthly Avg. #/100 ml
Dissolved Oxygen 8.4 >=5.0 Daily Avg. mg/L
Ammonia <0.10 0.50-Summer Monthly Avg. mg/L
pH 7.4 >6.0 and <9.0 Standard Units S.U.
N O R 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 North Cary WRF, constructed in 1983 as Cary's first advanced treatment
facility, is located on Old Reedy Creek Road and serves residents and
businesses in northern Cary. The facility discharges exceptionally-treated
water to Crabtree Creek, a tributary of the Neuse River.
