WYOMING, CITY OF STP
NPDES ID: IA0032646
X — SNC: Effluent violation (non-monthly average limit)
The facility discharged more of a pollutant than its permit allows, measured over a period other than a monthly average.
This quarter: 4 effluent violations, 4 reporting violations.
Violations
May 31, 2026
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 74.00199938 kg/d (7 DA AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 45 mg/L (7 DA AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 49.48599958 kg/d (30DA AVG)
DMR, Limited - Overdue
April 30, 2026
Nitrogen, ammonia total [as N]
84% over limit
Discharged 16.50207358 kg/d against a permitted limit of 8.98919992 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
83% over limit
Discharged 11.5 mg/L against a permitted limit of 6.3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)