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 11
N O R T H C A R Y
W R F
THE NORTH CARY WRF,
OPERATIONAL IN 1984 AS
CARY'S FIRST ADVANCED
TREATMENT FACILIT Y,
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.
PERMIT
PARAMETER
FY
2025
PERMIT
LIMIT
UNITS
Effluent Flow 6.41 12 MGD
Total Phosphorus 0.37
2.0
Quarterly Avg.
mg/L
Total Suspended Solids <2.5
30.0
Monthly Avg.
mg/L
Carbonaceous Biochemical
Oxygen Demand
<2
4.1 Summer
Monthly Avg.
mg/L
Total Nitrogen 60,646
143,246/
Year
lbs
Fecal Coliform 2.4
200
Monthly Avg.
#/100 ml
Dissolved Oxygen 8.1
≥ 5.0
Daily Avg.
mg/L
Ammonia <0.10
0.50 Summer
Monthly Avg.
mg/L
pH 7.2 > 6.0 and < 9.0 S.U.
NORTH CARY WRF RECEIVED A NOTICE OF VIOL ATION
(NOV-2025-TX -0027).
The violation, dated July 24, 2025, cited a failure of the Whole Effluent Toxicity
(WET) screening test reported on May 15, 2025. Follow-up testing returned
passing results in compliance with regulatory standards.
