OMAHA-STP, VILLAGE OF
NPDES ID: IL0080076
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: 1 effluent violation.
Violations
May 31, 2026
Coliform, fecal general
4625% over limit
Discharged 18900 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
BOD, carbonaceous [5 day, 20 C]
70% over limit
Discharged 17 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total suspended
13% over limit
Discharged 27 mg/L against a permitted limit of 24 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
125% over limit
Discharged 27 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Solids, total suspended
142% over limit
Discharged 29 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
21% over limit
Discharged 29 mg/L against a permitted limit of 24 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
Coliform, fecal general
350% over limit
Discharged 1800 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
92% over limit
Discharged 23 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Oxygen, dissolved [DO]
25% over limit
Discharged 4.51 mg/L against a permitted limit of 6 mg/L (MN WK AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
10% over limit
Discharged 4.51 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
29% over limit
Discharged 1.94 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Oxygen, dissolved [DO]
9% over limit
Discharged 5.44 mg/L against a permitted limit of 6 mg/L (MN WK AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)