KNOXVILLE CITY OF STP
NPDES ID: IA0035866
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 2 effluent violations, 1 compliance schedule violation.
Violations
June 30, 2026
Copper, total [as Cu]
9813% over limit
Discharged 19.43814604 kg/d against a permitted limit of 0.1960826 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
24730% over limit
Discharged 77.63586075 kg/d against a permitted limit of 0.3126698 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
9052% over limit
Discharged 1.543975 mg/L against a permitted limit of 0.01687 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
October 31, 2024
E. coli
8847% over limit
Discharged 19325.63 MPN/100mL against a permitted limit of 216 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)