NPDES ID: MO0139661
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Violations
February 28, 2026
Nitrogen, ammonia total [as N]
952% over limit
Discharged 22.1 mg/L against a permitted limit of 2.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
295% over limit
Discharged 22.1 mg/L against a permitted limit of 5.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
381% over limit
Discharged 10.1 mg/L against a permitted limit of 2.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
80% over limit
Discharged 10.1 mg/L against a permitted limit of 5.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Phosphorus, total [as P]
40% over limit
Discharged 0.7 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
38% over limit
Discharged 7.7 mg/L against a permitted limit of 5.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
267% over limit
Discharged 7.7 mg/L against a permitted limit of 2.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Phosphorus, total [as P]
80% over limit
Discharged 0.9 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Phosphorus, total [as P]
28% over limit
Discharged 0.64 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
38% over limit
Discharged 13.8 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
BOD, 5-day, 20 deg. C
0% over limit
Discharged 252 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 642 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
December 31, 2024
Nitrogen, ammonia total [as N]
681% over limit
Discharged 16.4 mg/L against a permitted limit of 2.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
193% over limit
Discharged 16.4 mg/L against a permitted limit of 5.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Phosphorus, total [as P]
426% over limit
Discharged 2.63 mg/L against a permitted limit of 0.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Nitrogen, ammonia total [as N]
29% over limit
Discharged 2.2 mg/L against a permitted limit of 1.7 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
267% over limit
Discharged 2.2 mg/L against a permitted limit of 0.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (22 days ago)