MUSKOGEE UTILITIES AUTHORITY
NPDES ID: OK0029131
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 1 effluent violation.
Violations
June 30, 2026
E. coli
60% over limit
Discharged 648.8 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, 5-day, 20 deg. C
4% over limit
Discharged 46.6 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
2% over limit
Discharged 30.7 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
BOD, 5-day, 20 deg. C
18% over limit
Discharged 53 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
August 31, 2025
BOD, 5-day, 20 deg. C
13% over limit
Discharged 33.8 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
6% over limit
Discharged 47.6 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
July 31, 2025
BOD, 5-day, 20 deg. C
61% over limit
Discharged 72.5 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
64% over limit
Discharged 49.1 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
E. coli
7% over limit
Discharged 435.2 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
BOD, 5-day, 20 deg. C
17% over limit
Discharged 52.8 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
December 31, 2024
BOD, 5-day, 20 deg. C
96% over limit
Discharged 88.4 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
109% over limit
Discharged 62.8 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
LC50 Static Renewal 48Hr Acute Pimephales promelas
0% over limit
Discharged 74.63 % against a permitted limit of 0 % (48HR MIN)
DMR, Monitor Only - Overdue
% Mortality Static Renewal 48 Hr Pimephales promelas or use TJA6C
0% over limit
Discharged 100 % against a permitted limit of 0 % (48HR MIN)
DMR, Monitor Only - Overdue
LC50 Static Renewal 48Hr Acute Pimephales promelas
0% over limit
Discharged 1 pass=0;fail=1 against a permitted limit of 0 pass=0;fail=1 (48HR MIN)
DMR, Monitor Only - Overdue
%Mortality Static Renewal 48Hr Acute Daphnia Pulex
0% over limit
Discharged 2.5 % against a permitted limit of 0 % (48HR MIN)
DMR, Monitor Only - Overdue
LC50 Static Renewal 48Hr Acute Daphnia pulex
0% over limit
Discharged 100 % against a permitted limit of 0 % (48HR MIN)
DMR, Monitor Only - Overdue
LC50 Pass/Fail Static Renewal 48Hr Acute Daphnia Pulex
0% over limit
Discharged 0 pass=0;fail=1 against a permitted limit of 0 pass=0;fail=1 (48HR MIN)
DMR, Monitor Only - Overdue
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 17, 2026 (46 minutes ago)