OGDEN STP, VILLAGE OF
NPDES ID: ILG580132
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: 3 effluent violations.
Violations
May 31, 2026
Solids, total suspended
3% over limit
Discharged 38 mg/L against a permitted limit of 37 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, total suspended
81% over limit
Discharged 67 mg/L against a permitted limit of 37 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
49% over limit
Discharged 67 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
73% over limit
Discharged 64 mg/L against a permitted limit of 37 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
42% over limit
Discharged 64 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
0% over limit
Discharged 5.72039995 kg/d against a permitted limit of 59.0199995 kg/d (WKLY AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 77 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 1.22579999 kg/d against a permitted limit of 32.68799973 kg/d (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.059 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.06 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 63 mg/L against a permitted limit of 6 mg/L (DAILY MN)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 6.2 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 29 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 1.22579999 kg/d against a permitted limit of 52.20999956 kg/d (WKLY AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 6.2 mg/L against a permitted limit of 40 mg/L (WKLY AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.8 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 29 mg/L against a permitted limit of 37 mg/L (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.052 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.8 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 2420 MPN/100mL against a permitted limit of 0 MPN/100mL (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 230 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.17 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.052 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 5.72039995 kg/d against a permitted limit of 48.57799959 kg/d (MO AVG)
DMR, Limited - Overdue
February 28, 2025
Solids, total suspended
11% over limit
Discharged 50 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
35% over limit
Discharged 50 mg/L against a permitted limit of 37 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Oxygen, dissolved [DO]
5% over limit
Discharged 5.7 mg/L against a permitted limit of 6 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
July 31, 2024
Oxygen, dissolved [DO]
5% over limit
Discharged 5.7 mg/L against a permitted limit of 6 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)