C A RY, N O RT H C A R O L I N A A N N U A L WAST E WAT E R R E P O R T 2 0 25 12
PERMIT
PARAMETER
FY
2025
PERMIT
LIMIT
UNITS
Effluent Flow 5.93 12.8 MGD
Total Phosphorus 0.73
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 45,261
180,210/
Year
lbs
Fecal Coliform 1.1
200
Monthly Avg.
#/100 ml
Dissolved Oxygen 7.33
≥ 5.0
Daily Avg.
mg/L
Ammonia <0.05
1.0 Summer
Monthly Avg.
mg/L
pH 7.1 > 6.0 and < 9.0 S.U.
S O U T H C A R Y
W R F
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.
NO PERMIT VIOL ATIONS WERE REPORTED AT SOUTH CARY
WRF DURING FISCAL YEAR (FY) 2025.
