CORINTH POTW
NPDES ID: MS0061328
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: 10 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
22% over limit
Discharged 3.67 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
47% over limit
Discharged 66.53369944 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
133% over limit
Discharged 158.67299867 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
13% over limit
Discharged 33.95 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
455% over limit
Discharged 0.061 mg/L against a permitted limit of 0.011 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
1% over limit
Discharged 45.6 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Copper, total recoverable
225% over limit
Discharged 0.026 mg/L against a permitted limit of 0.008 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
305% over limit
Discharged 12.14 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
174% over limit
Discharged 5.48 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, total [as N]
165% over limit
Discharged 1038.56585127 kg/d against a permitted limit of 391.80199671 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
88% over limit
Discharged 491.89991587 kg/d against a permitted limit of 261.04999781 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
460% over limit
Discharged 16.8 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
454% over limit
Discharged 251.33439789 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
105% over limit
Discharged 2095.68668239 kg/d against a permitted limit of 1022.40799141 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
623% over limit
Discharged 492.52643586 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
131% over limit
Discharged 787.78533338 kg/d against a permitted limit of 340.95399714 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
13% over limit
Discharged 11.26 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
82% over limit
Discharged 0.02 mg/L against a permitted limit of 0.011 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
8% over limit
Discharged 735.21213382 kg/d against a permitted limit of 681.45399427 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
479% over limit
Discharged 11.58 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
46% over limit
Discharged 331.16575722 kg/d against a permitted limit of 226.99999809 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
19% over limit
Discharged 7.15 MGD against a permitted limit of 6 MGD (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
125% over limit
Discharged 0.018 mg/L against a permitted limit of 0.008 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
479% over limit
Discharged 17.36 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
188% over limit
Discharged 196.33683835 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
4% over limit
Discharged 271.29223772 kg/d against a permitted limit of 261.04999781 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
176% over limit
Discharged 125.41295895 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
375% over limit
Discharged 9.49 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
6% over limit
Discharged 72.36305939 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
52% over limit
Discharged 9.12 MGD against a permitted limit of 6 MGD (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
160% over limit
Discharged 1018.70789144 kg/d against a permitted limit of 391.80199671 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
84% over limit
Discharged 479.82351597 kg/d against a permitted limit of 261.04999781 kg/d (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Copper, total recoverable
13% over limit
Discharged 0.009 mg/L against a permitted limit of 0.008 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, total [as N]
12% over limit
Discharged 291.25461755 kg/d against a permitted limit of 261.04999781 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
243% over limit
Discharged 102.76 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
90% over limit
Discharged 744.11507375 kg/d against a permitted limit of 391.80199671 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
715% over limit
Discharged 366.6 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
101% over limit
Discharged 69.92 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
Copper, total recoverable
73% over limit
Discharged 0.019 mg/L against a permitted limit of 0.011 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Copper, total recoverable
138% over limit
Discharged 0.019 mg/L against a permitted limit of 0.008 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
74% over limit
Discharged 1187.18729002 kg/d against a permitted limit of 681.45399427 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
221% over limit
Discharged 3286.38793239 kg/d against a permitted limit of 1022.40799141 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
278% over limit
Discharged 11.34 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Copper, total recoverable
9% over limit
Discharged 0.012 mg/L against a permitted limit of 0.011 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
0% over limit
Discharged 45.57705962 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
50% over limit
Discharged 0.012 mg/L against a permitted limit of 0.008 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
60% over limit
Discharged 109.22331908 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
157% over limit
Discharged 5.14 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
7% over limit
Discharged 72.73987939 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
158% over limit
Discharged 5.16 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
235% over limit
Discharged 10.06 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
August 31, 2025
Nitrogen, ammonia total [as N]
121% over limit
Discharged 4.41 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
17% over limit
Discharged 79.64521933 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
236% over limit
Discharged 10.08 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Copper, total recoverable
38% over limit
Discharged 0.011 mg/L against a permitted limit of 0.008 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
4% over limit
Discharged 10.39 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
342% over limit
Discharged 8.83 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
86% over limit
Discharged 84.46215929 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
58% over limit
Discharged 107.5798391 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
297% over limit
Discharged 11.92 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
June 30, 2025
Nitrogen, ammonia total [as N]
302% over limit
Discharged 273.8346377 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
625% over limit
Discharged 21.76 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
308% over limit
Discharged 185.09579844 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
5% over limit
Discharged 10.49 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
525% over limit
Discharged 12.5 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Nitrogen, ammonia total [as N]
309% over limit
Discharged 278.84225766 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
12% over limit
Discharged 292.75735754 kg/d against a permitted limit of 261.04999781 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
615% over limit
Discharged 14.3 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
577% over limit
Discharged 20.3 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
425% over limit
Discharged 238.281898 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
BOD, 5-day, percent removal
18% over limit
Discharged 82.35 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
Copper, total recoverable
536% over limit
Discharged 0.07 mg/L against a permitted limit of 0.011 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
8% over limit
Discharged 10.82 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
571% over limit
Discharged 20.14 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
14% over limit
Discharged 298.66389749 kg/d against a permitted limit of 261.04999781 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
775% over limit
Discharged 0.07 mg/L against a permitted limit of 0.008 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
262% over limit
Discharged 246.31315793 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
390% over limit
Discharged 222.23299813 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
615% over limit
Discharged 14.3 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
45% over limit
Discharged 78.23 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
529% over limit
Discharged 18.88 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
246% over limit
Discharged 235.39899802 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
9% over limit
Discharged 83.6 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
80% over limit
Discharged 72.99 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
328% over limit
Discharged 194.08499837 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
17% over limit
Discharged 11.7 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
3% over limit
Discharged 268.08699775 kg/d against a permitted limit of 261.04999781 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
628% over limit
Discharged 14.56 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
195% over limit
Discharged 133.83919888 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
397% over limit
Discharged 14.9 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
8% over limit
Discharged 10.77 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
209% over limit
Discharged 210.23831823 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
15% over limit
Discharged 82.72 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
388% over limit
Discharged 9.76 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
32% over limit
Discharged 80.2 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
January 31, 2025
Chlorine, total residual
6% over limit
Discharged 0.033 mg/L against a permitted limit of 0.031 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
186% over limit
Discharged 195.06563836 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
4% over limit
Discharged 84.37 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
Chlorine, total residual
17% over limit
Discharged 0.021 mg/L against a permitted limit of 0.018 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
330% over limit
Discharged 8.59 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
195% over limit
Discharged 133.83465888 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
317% over limit
Discharged 12.52 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
188% over limit
Discharged 8.64 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
57% over limit
Discharged 106.9442391 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
12% over limit
Discharged 50.78443957 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
7% over limit
Discharged 48.2 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
74% over limit
Discharged 3.48 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
154% over limit
Discharged 61.91 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
October 31, 2024
Chlorine, total residual
250% over limit
Discharged 0.063 mg/L against a permitted limit of 0.018 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
239% over limit
Discharged 0.105 mg/L against a permitted limit of 0.031 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
September 30, 2024
E. coli
95% over limit
Discharged 800 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.94 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
August 31, 2024
Oxygen, dissolved [DO]
48% over limit
Discharged 3.1 mg/L against a permitted limit of 6 mg/L (MINIMUM)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
363% over limit
Discharged 13.9 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
146% over limit
Discharged 4.92 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
123% over limit
Discharged 281.2 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
62% over limit
Discharged 110.50359907 kg/d against a permitted limit of 68.09999943 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)