CORBIN STP
NPDES ID: KY0020133
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 1 single-event violation.
Violations
October 31, 2025
BOD, carbonaceous [5 day, 20 C]
109% over limit
Discharged 20.9 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
212% over limit
Discharged 18.7 mg/L against a permitted limit of 6 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
14% over limit
Discharged 77.49779935 kg/d against a permitted limit of 68.09999943 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
141% over limit
Discharged 36.1 mg/L against a permitted limit of 15 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
59% over limit
Discharged 162.84979863 kg/d against a permitted limit of 102.14999914 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
452% over limit
Discharged 717.7 MPN/100mL against a permitted limit of 130 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
32% over limit
Discharged 337.63979716 kg/d against a permitted limit of 255.60199785 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
3280% over limit
Discharged 8112.4 MPN/100mL against a permitted limit of 240 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
123% over limit
Discharged 8.9 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
7% over limit
Discharged 182.00859847 kg/d against a permitted limit of 170.24999857 kg/d (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
31% over limit
Discharged 88.93859925 kg/d against a permitted limit of 68.09999943 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
135% over limit
Discharged 9.4 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
4929% over limit
Discharged 12069.6 MPN/100mL against a permitted limit of 240 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
27% over limit
Discharged 129.70779891 kg/d against a permitted limit of 102.14999914 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
53% over limit
Discharged 22.9 mg/L against a permitted limit of 15 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
12% over limit
Discharged 286.1561976 kg/d against a permitted limit of 255.60199785 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
4% over limit
Discharged 10.4 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
128% over limit
Discharged 13.7 mg/L against a permitted limit of 6 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
4014% over limit
Discharged 5348 MPN/100mL against a permitted limit of 130 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
August 31, 2025
Nitrogen, ammonia total [as N]
5% over limit
Discharged 6.3 mg/L against a permitted limit of 6 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
60% over limit
Discharged 6.4 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
9% over limit
Discharged 110.91219907 kg/d against a permitted limit of 102.14999914 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
68% over limit
Discharged 10.1 mg/L against a permitted limit of 6 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
3% over limit
Discharged 70.27919941 kg/d against a permitted limit of 68.09999943 kg/d (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
E. coli
338% over limit
Discharged 1050.8 MPN/100mL against a permitted limit of 240 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
May 31, 2025
E. coli
81% over limit
Discharged 434.9 MPN/100mL against a permitted limit of 240 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)