UNION CITY WWT FACILITY
NPDES ID: OK0038393
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 2 effluent violations.
Violations
April 30, 2026
Solids, total suspended
44% over limit
Discharged 129.5 mg/L against a permitted limit of 90 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.07 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
2% over limit
Discharged 138 mg/L against a permitted limit of 135 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
30% over limit
Discharged 117 mg/L against a permitted limit of 90 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Solids, total suspended
39% over limit
Discharged 94.61359921 kg/d against a permitted limit of 68.14539943 kg/d (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
E. coli
19% over limit
Discharged 2420 MPN/100mL against a permitted limit of 2030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
16% over limit
Discharged 104 mg/L against a permitted limit of 90 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
30% over limit
Discharged 88.39379926 kg/d against a permitted limit of 68.14539943 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
60% over limit
Discharged 48 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
31% over limit
Discharged 58.8 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
86% over limit
Discharged 42.22199965 kg/d against a permitted limit of 22.69999981 kg/d (MO AVG)
DMR, Limited - Numeric Violation
E. coli
48% over limit
Discharged 934.7 MPN/100mL against a permitted limit of 630 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, total suspended
7% over limit
Discharged 145 mg/L against a permitted limit of 135 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
6% over limit
Discharged 31.9 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
37% over limit
Discharged 123 mg/L against a permitted limit of 90 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
67% over limit
Discharged 37.95439968 kg/d against a permitted limit of 22.69999981 kg/d (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.17 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total suspended
6% over limit
Discharged 95.4 mg/L against a permitted limit of 90 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
182% over limit
Discharged 1773.7 MPN/100mL against a permitted limit of 630 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
91% over limit
Discharged 43.44779963 kg/d against a permitted limit of 22.69999981 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
33% over limit
Discharged 39.9 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
19% over limit
Discharged 2420 MPN/100mL against a permitted limit of 2030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
53% over limit
Discharged 104.01139913 kg/d against a permitted limit of 68.14539943 kg/d (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)