SCOTTSVILLE STP
NPDES ID: KY0024783
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 10 effluent violations, 1 single-event violation.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
126% over limit
Discharged 58.82704951 kg/d against a permitted limit of 26.05959978 kg/d (MO AVG)
DMR, Limited - Numeric Violation
E. coli
908% over limit
Discharged 2420 MPN/100mL against a permitted limit of 240 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
E. coli
31% over limit
Discharged 170 MPN/100mL against a permitted limit of 130 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
482% over limit
Discharged 34.9 mg/L against a permitted limit of 6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
100% over limit
Discharged 78.36039934 kg/d against a permitted limit of 39.08939967 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
555% over limit
Discharged 26.2 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
BOD, carbonaceous [5 day, 20 C]
34% over limit
Discharged 26.75 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
148% over limit
Discharged 37.2 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
63% over limit
Discharged 49 mg/L against a permitted limit of 30 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
160% over limit
Discharged 26.025 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, carbonaceous [5 day, 20 C]
85% over limit
Discharged 37 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carb-5 day, 20 deg C, percent removal
20% over limit
Discharged 82 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
167% over limit
Discharged 80 mg/L against a permitted limit of 30 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 196.28689835 kg/d against a permitted limit of 195.49239836 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
E. coli
908% over limit
Discharged 2420 MPN/100mL against a permitted limit of 240 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Cyanide, free [amenable to chlorination]
285% over limit
Discharged 0.02 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 26.05959978 kg/d (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 6 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 39.08939967 kg/d (DAILY MX)
DMR, Limited - Overdue
June 30, 2025
Cyanide, free [amenable to chlorination]
36% over limit
Discharged 0.03 mg/L against a permitted limit of 0.022 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, free [amenable to chlorination]
477% over limit
Discharged 0.03 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Cyanide, free [amenable to chlorination]
477% over limit
Discharged 0.03 mg/L against a permitted limit of 0.0052 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
6% over limit
Discharged 21.2 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
20% over limit
Discharged 36 mg/L against a permitted limit of 30 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Cyanide, free [amenable to chlorination]
36% over limit
Discharged 0.03 mg/L against a permitted limit of 0.022 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
E. coli
401% over limit
Discharged 1203 MPN/100mL against a permitted limit of 240 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
7% over limit
Discharged 32 mg/L against a permitted limit of 30 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
February 28, 2025
BOD, carbonaceous [5 day, 20 C]
33% over limit
Discharged 40 mg/L against a permitted limit of 30 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
367% over limit
Discharged 1120 MPN/100mL against a permitted limit of 240 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
16% over limit
Discharged 226.2726901 kg/d against a permitted limit of 195.67399836 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
November 30, 2024
E. coli
908% over limit
Discharged 2420 MPN/100mL against a permitted limit of 240 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
September 30, 2024
E. coli
115% over limit
Discharged 517 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)