SHELBYVILLE WWTF
NPDES ID: MO0054704
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 2 effluent violations, 3 compliance schedule violations.
Violations
June 30, 2026
pH
0% over limit
Discharged 9.08 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
37% over limit
Discharged 52 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
406% over limit
Discharged 15.7 mg/L against a permitted limit of 3.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
30% over limit
Discharged 15.7 mg/L against a permitted limit of 12.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.3 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
339% over limit
Discharged 5.71 mg/L against a permitted limit of 1.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)