PERKINS WWT
NPDES ID: OK0028801
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
May 31, 2026
E. coli
1575% over limit
Discharged 6800 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
63% over limit
Discharged 48.8 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
44% over limit
Discharged 43.1 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
54% over limit
Discharged 30.75 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
220% over limit
Discharged 6500 MPN/100mL against a permitted limit of 2030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
64% over limit
Discharged 74 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
January 31, 2026
E. coli
102% over limit
Discharged 1275.37 MPN/100mL against a permitted limit of 630 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
E. coli
885% over limit
Discharged 20000 MPN/100mL against a permitted limit of 2030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
E. coli
215% over limit
Discharged 6400 MPN/100mL against a permitted limit of 2030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
E. coli
885% over limit
Discharged 20000 MPN/100mL against a permitted limit of 2030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
E. coli
269% over limit
Discharged 1500 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
69% over limit
Discharged 50.7 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
7% over limit
Discharged 4.64 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, total suspended
12% over limit
Discharged 50.6 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
565% over limit
Discharged 2700 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
Solids, total suspended
12% over limit
Discharged 50.5 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
152% over limit
Discharged 317.8 MPN/100mL against a permitted limit of 126 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
E. coli
1304% over limit
Discharged 5700 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
41% over limit
Discharged 42.25 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
BOD, 5-day, 20 deg. C
191% over limit
Discharged 58.2 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
3077% over limit
Discharged 12900 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
81% over limit
Discharged 62.87445947 kg/d against a permitted limit of 34.82179971 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
110% over limit
Discharged 63 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
47% over limit
Discharged 66 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
253% over limit
Discharged 106 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
283% over limit
Discharged 481.95 MPN/100mL against a permitted limit of 126 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
Solids, total suspended
35% over limit
Discharged 70.73773941 kg/d against a permitted limit of 52.25539956 kg/d (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
E. coli
33% over limit
Discharged 2700 MPN/100mL against a permitted limit of 2030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 6.44 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, 20 deg. C
75% over limit
Discharged 35 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
26% over limit
Discharged 37.65 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
13% over limit
Discharged 51 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
108% over limit
Discharged 62.3 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
February 28, 2025
BOD, 5-day, 20 deg. C
6% over limit
Discharged 21.22 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
16% over limit
Discharged 34.9 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
January 31, 2025
E. coli
885% over limit
Discharged 20000 MPN/100mL against a permitted limit of 2030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Oxygen, dissolved [DO]
35% over limit
Discharged 3.27 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
November 30, 2024
BOD, 5-day, 20 deg. C
20% over limit
Discharged 24 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
136% over limit
Discharged 4800 MPN/100mL against a permitted limit of 2030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
60% over limit
Discharged 2 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
25% over limit
Discharged 37.4 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Oxygen, dissolved [DO]
47% over limit
Discharged 2.67 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
September 30, 2024
E. coli
1526% over limit
Discharged 6600 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
BOD, 5-day, 20 deg. C
10% over limit
Discharged 22 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
70% over limit
Discharged 51 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
540% over limit
Discharged 2600 MPN/100mL against a permitted limit of 406 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
176% over limit
Discharged 124 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
66% over limit
Discharged 49.7 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)