KETCHIKAN, CITY OF WWTP
NPDES ID: AK0021440
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 1 effluent violation.
Violations
April 30, 2026
Copper, total [as Cu]
9% over limit
Discharged 0.0426 mg/L against a permitted limit of 0.039 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Copper, total [as Cu]
2% over limit
Discharged 0.0398 mg/L against a permitted limit of 0.039 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Copper, total [as Cu]
9% over limit
Discharged 0.0427 mg/L against a permitted limit of 0.039 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Copper, total [as Cu]
17% over limit
Discharged 0.04577 mg/L against a permitted limit of 0.039 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Copper, total [as Cu]
54% over limit
Discharged 0.06 mg/L against a permitted limit of 0.039 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
20% over limit
Discharged 1.13045999 kg/d against a permitted limit of 0.93977999 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
8% over limit
Discharged 0.067 mg/L against a permitted limit of 0.062 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
45% over limit
Discharged 0.84897999 kg/d against a permitted limit of 0.58566 kg/d (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Copper, total [as Cu]
49% over limit
Discharged 0.058 mg/L against a permitted limit of 0.039 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
pH
0% over limit
Discharged 6.13 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)