WINNSBORO JACKSON CREEK PLANT
NPDES ID: SC0020125
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 22 effluent violations.
Violations
May 31, 2026
BOD, 5-day, 20 deg. C
87% over limit
Discharged 161.44239864 kg/d against a permitted limit of 86.25999928 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1677% over limit
Discharged 241.98199797 kg/d against a permitted limit of 13.61999989 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
10% over limit
Discharged 49.6 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
781% over limit
Discharged 3076 MPN/100mL against a permitted limit of 349 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
363% over limit
Discharged 6.95 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
217% over limit
Discharged 45.2 mg/L against a permitted limit of 14.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
50% over limit
Discharged 272.39999771 kg/d against a permitted limit of 181.59999847 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
134% over limit
Discharged 22.2 mg/L against a permitted limit of 9.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
162% over limit
Discharged 150.95499873 kg/d against a permitted limit of 57.65799952 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2255% over limit
Discharged 213.8339982 kg/d against a permitted limit of 9.07999992 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
33% over limit
Discharged 363.19999695 kg/d against a permitted limit of 272.39999771 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
393% over limit
Discharged 11.1 mg/L against a permitted limit of 2.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
April 30, 2026
BOD, 5-day, 20 deg. C
29% over limit
Discharged 18.4 mg/L against a permitted limit of 14.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
28% over limit
Discharged 12.2 mg/L against a permitted limit of 9.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
193% over limit
Discharged 39.90659966 kg/d against a permitted limit of 13.61999989 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
718% over limit
Discharged 18.4 mg/L against a permitted limit of 2.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
718% over limit
Discharged 0.09 mg/L against a permitted limit of 0.011 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
140% over limit
Discharged 0.2724 kg/d against a permitted limit of 0.1135 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
847% over limit
Discharged 14.2 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
689% over limit
Discharged 0.15 mg/L against a permitted limit of 0.019 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
113% over limit
Discharged 19.34039984 kg/d against a permitted limit of 9.07999992 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
33% over limit
Discharged 0.0908 kg/d against a permitted limit of 0.0681 kg/d (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, 5-day, 20 deg. C
244% over limit
Discharged 32.7 mg/L against a permitted limit of 9.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
593% over limit
Discharged 2419 MPN/100mL against a permitted limit of 349 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
833% over limit
Discharged 21 mg/L against a permitted limit of 2.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
16% over limit
Discharged 34.7 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
301% over limit
Discharged 505 MPN/100mL against a permitted limit of 126 MPN/100mL (30DAVGEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
138% over limit
Discharged 21.56499982 kg/d against a permitted limit of 9.07999992 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
52% over limit
Discharged 68.4 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
229% over limit
Discharged 44.80979962 kg/d against a permitted limit of 13.61999989 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
900% over limit
Discharged 15 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
357% over limit
Discharged 65.1 mg/L against a permitted limit of 14.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
73% over limit
Discharged 149.09359875 kg/d against a permitted limit of 86.25999928 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
9% over limit
Discharged 21.79199982 kg/d against a permitted limit of 19.97599983 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
424% over limit
Discharged 660 MPN/100mL against a permitted limit of 126 MPN/100mL (30DAVGEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
171% over limit
Discharged 8.9 mg/L against a permitted limit of 3.28 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
24% over limit
Discharged 11.8 mg/L against a permitted limit of 9.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
229% over limit
Discharged 7.2 mg/L against a permitted limit of 2.19 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
5591% over limit
Discharged 19863 MPN/100mL against a permitted limit of 349 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
115% over limit
Discharged 4.7 mg/L against a permitted limit of 2.19 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
119% over limit
Discharged 20.8 mg/L against a permitted limit of 9.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
39% over limit
Discharged 41.8 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
20% over limit
Discharged 54 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
83% over limit
Discharged 6 mg/L against a permitted limit of 3.28 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
143% over limit
Discharged 34.6 mg/L against a permitted limit of 14.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, 5-day, 20 deg. C
147% over limit
Discharged 213.37999821 kg/d against a permitted limit of 86.25999928 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
3% over limit
Discharged 46.2 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
222% over limit
Discharged 30.6 mg/L against a permitted limit of 9.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
25% over limit
Discharged 37.6 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
300% over limit
Discharged 100 % against a permitted limit of 25 % (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
471% over limit
Discharged 81.3 mg/L against a permitted limit of 14.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
150% over limit
Discharged 100 % against a permitted limit of 40 % (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
BOD, 5-day, 20 deg. C
258% over limit
Discharged 206.56999826 kg/d against a permitted limit of 57.65799952 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
Limit violation
Discharged 272.39999771 kg/d against a permitted limit of 272.39999771 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
Limit violation
Discharged 272.39999771 kg/d against a permitted limit of 86.25999928 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
1120% over limit
Discharged -83 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
1522% over limit
Discharged 730 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
587% over limit
Discharged 206 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
2900% over limit
Discharged -350 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
78% over limit
Discharged 322.79399729 kg/d against a permitted limit of 181.59999847 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
5023% over limit
Discharged 730 mg/L against a permitted limit of 14.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
1289% over limit
Discharged 132 mg/L against a permitted limit of 9.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
29% over limit
Discharged 2.9 mg/L against a permitted limit of 2.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
262% over limit
Discharged 34.4 mg/L against a permitted limit of 9.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
593% over limit
Discharged 2419 MPN/100mL against a permitted limit of 349 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
798% over limit
Discharged 128 mg/L against a permitted limit of 14.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
23% over limit
Discharged 155 MPN/100mL against a permitted limit of 126 MPN/100mL (30DAVGEO)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
235% over limit
Discharged 288.74399757 kg/d against a permitted limit of 86.25999928 kg/d (WKLY 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
Solids, total suspended
33% over limit
Discharged 40 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
27% over limit
Discharged 1.9 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
37% over limit
Discharged 79.5 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
September 30, 2025
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
300% over limit
Discharged 100 % against a permitted limit of 25 % (MO AVG)
DMR, Limited - Numeric Violation
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
150% over limit
Discharged 100 % against a permitted limit of 40 % (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
6% over limit
Discharged 31.9 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
13% over limit
Discharged 1.7 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
345% over limit
Discharged 1553 MPN/100mL against a permitted limit of 349 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, total suspended
19% over limit
Discharged 35.7 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
16% over limit
Discharged 2.6 mg/L against a permitted limit of 2.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
17% over limit
Discharged 410 MPN/100mL against a permitted limit of 349 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
40% over limit
Discharged 2.1 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
10% over limit
Discharged 14.98199987 kg/d against a permitted limit of 13.61999989 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
11% over limit
Discharged 2.5 mg/L against a permitted limit of 2.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
June 30, 2025
E. coli
593% over limit
Discharged 2419 MPN/100mL against a permitted limit of 349 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
Nitrogen, ammonia total [as N]
53% over limit
Discharged 2.3 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
131% over limit
Discharged 65.4 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
42% over limit
Discharged 3.2 mg/L against a permitted limit of 2.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
11% over limit
Discharged 50 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
80% over limit
Discharged 2.7 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
20% over limit
Discharged 53.8 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
19% over limit
Discharged 35.8 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
64% over limit
Discharged 3.7 mg/L against a permitted limit of 2.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
67% over limit
Discharged 22.67729981 kg/d against a permitted limit of 13.61999989 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
60% over limit
Discharged 3.6 mg/L against a permitted limit of 2.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
110% over limit
Discharged 3.15 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
22% over limit
Discharged 2.68 mg/L against a permitted limit of 2.19 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Nitrogen, ammonia total [as N]
53% over limit
Discharged 3.35 mg/L against a permitted limit of 2.19 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
593% over limit
Discharged 2419 MPN/100mL against a permitted limit of 349 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
37% over limit
Discharged 4.5 mg/L against a permitted limit of 3.28 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
1% over limit
Discharged 3.3 mg/L against a permitted limit of 3.28 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
33% over limit
Discharged 80.1 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
100% over limit
Discharged 80 % against a permitted limit of 40 % (DAILY MX)
DMR, Limited - Numeric Violation
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
220% over limit
Discharged 80 % against a permitted limit of 25 % (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
29% over limit
Discharged 2.9 mg/L against a permitted limit of 2.25 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
27% over limit
Discharged 1.9 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
300% over limit
Discharged 100 % against a permitted limit of 25 % (MO AVG)
DMR, Limited - Numeric Violation
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
150% over limit
Discharged 100 % against a permitted limit of 40 % (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Solids, total suspended
57% over limit
Discharged 47 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
1% over limit
Discharged 275.57799768 kg/d against a permitted limit of 272.39999771 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
272% over limit
Discharged 1299.7 MPN/100mL against a permitted limit of 349 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
29% over limit
Discharged 58 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Solids, total suspended
2% over limit
Discharged 46 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)