NPDES ID: PA0027341
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: 2 effluent violations.
Violations
April 30, 2026
Selenium, total [as Se]
365% over limit
Discharged 0.0035866 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
146% over limit
Discharged 0.0039044 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Selenium, total [as Se]
5% over limit
Discharged 0.0157 mg/L against a permitted limit of 0.015 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
1476% over limit
Discharged 0.0121672 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
691% over limit
Discharged 0.0125758 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Selenium, total [as Se]
36% over limit
Discharged 0.0204 mg/L against a permitted limit of 0.015 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
3471% over limit
Discharged 0.0275578 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
2331% over limit
Discharged 0.0386354 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Selenium, total [as Se]
1000% over limit
Discharged 0.017479 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
1676% over limit
Discharged 0.0137108 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Selenium, total [as Se]
1174% over limit
Discharged 0.0202484 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
2212% over limit
Discharged 0.0178422 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
20% over limit
Discharged 0.018 mg/L against a permitted limit of 0.015 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Selenium, total [as Se]
17% over limit
Discharged 0.0175 mg/L against a permitted limit of 0.015 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
1876% over limit
Discharged 0.0152544 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
1463% over limit
Discharged 0.0248338 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
Selenium, total [as Se]
2154% over limit
Discharged 0.0358206 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
2335% over limit
Discharged 0.0187956 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
103% over limit
Discharged 0.061 mg/L against a permitted limit of 0.03 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
117% over limit
Discharged 0.0325 mg/L against a permitted limit of 0.015 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Selenium, total [as Se]
65% over limit
Discharged 0.0012712 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Selenium, total [as Se]
47% over limit
Discharged 0.001135 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Selenium, total [as Se]
324% over limit
Discharged 0.0032688 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
234% over limit
Discharged 0.0053118 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
Selenium, total [as Se]
329% over limit
Discharged 0.0033142 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
180% over limit
Discharged 0.0044492 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
Selenium, total [as Se]
4059% over limit
Discharged 0.0320978 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
3683% over limit
Discharged 0.0601096 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
77% over limit
Discharged 0.0265 mg/L against a permitted limit of 0.015 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
33% over limit
Discharged 0.04 mg/L against a permitted limit of 0.03 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Selenium, total [as Se]
3% over limit
Discharged 0.031 mg/L against a permitted limit of 0.03 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
1865% over limit
Discharged 0.0151636 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
1354% over limit
Discharged 0.0231086 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
80% over limit
Discharged 0.027 mg/L against a permitted limit of 0.015 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Selenium, total [as Se]
1520% over limit
Discharged 0.0257418 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
3118% over limit
Discharged 0.0248338 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
80% over limit
Discharged 0.027 mg/L against a permitted limit of 0.015 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Selenium, total [as Se]
5165% over limit
Discharged 0.040633 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
37% over limit
Discharged 0.041 mg/L against a permitted limit of 0.03 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
2743% over limit
Discharged 0.045173 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
117% over limit
Discharged 0.0325 mg/L against a permitted limit of 0.015 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Selenium, total [as Se]
10% over limit
Discharged 0.0165 mg/L against a permitted limit of 0.015 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
1865% over limit
Discharged 0.0151636 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
1174% over limit
Discharged 0.0202484 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Selenium, total [as Se]
90% over limit
Discharged 0.0285 mg/L against a permitted limit of 0.015 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
2466% over limit
Discharged 0.0407692 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
23% over limit
Discharged 0.037 mg/L against a permitted limit of 0.03 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
3506% over limit
Discharged 0.0278302 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Selenium, total [as Se]
618% over limit
Discharged 0.0055388 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
291% over limit
Discharged 0.0062198 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Selenium, total [as Se]
27% over limit
Discharged 0.019 mg/L against a permitted limit of 0.015 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
1289% over limit
Discharged 0.0220644 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
2006% over limit
Discharged 0.0162532 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Selenium, total [as Se]
424% over limit
Discharged 0.0040406 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
269% over limit
Discharged 0.0058566 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Selenium, total [as Se]
471% over limit
Discharged 0.0044038 kg/d against a permitted limit of 0.0007718 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total [as Se]
180% over limit
Discharged 0.0044492 kg/d against a permitted limit of 0.001589 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)