STEPHENSON WWTP
NPDES ID: MIG570221
T — SNC: Compliance schedule reporting violation
The facility was more than 30 days late reporting progress on its compliance schedule.
This quarter: 4 effluent violations.
Violations
April 30, 2026
BOD, carbonaceous [5 day, 20 C]
59% over limit
Discharged 36.0277145 kg/d against a permitted limit of 22.69999981 kg/d (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
97% over limit
Discharged 27.79589099 kg/d against a permitted limit of 14.07399988 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
79% over limit
Discharged 30.95125452 kg/d against a permitted limit of 17.25199986 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
141% over limit
Discharged 61.21781349 kg/d against a permitted limit of 25.42399979 kg/d (7 DA AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)