NPDES ID: MO0030821
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: 4 effluent violations.
Violations
April 30, 2026
Solids, suspended percent removal
89% over limit
Discharged 34 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
4% over limit
Discharged 2.9 mg/L against a permitted limit of 2.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, suspended percent removal
3% over limit
Discharged 64 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
236% over limit
Discharged 13.1 mg/L against a permitted limit of 3.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
16% over limit
Discharged 19.7 mg/L against a permitted limit of 17 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
11% over limit
Discharged 61 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
405% over limit
Discharged 19.7 mg/L against a permitted limit of 3.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, suspended percent removal
37% over limit
Discharged 52 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
18% over limit
Discharged 20.1 mg/L against a permitted limit of 17 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
415% over limit
Discharged 20.1 mg/L against a permitted limit of 3.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, suspended percent removal
51% over limit
Discharged 47 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
211% over limit
Discharged 10.9 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Toxicity [acute], Pimephales promelas [Fathead Minnow]
233% over limit
Discharged 1 toxic against a permitted limit of 0.3 toxic (DAILY MX)
DMR, Limited - Numeric Violation
Toxicity [acute], Ceriodaphnia dubia
233% over limit
Discharged 1 toxic against a permitted limit of 0.3 toxic (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
149% over limit
Discharged 9.72 mg/L against a permitted limit of 3.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
6% over limit
Discharged 69.1 mg/L against a permitted limit of 65 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
100% over limit
Discharged 30 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
54% over limit
Discharged 69.1 mg/L against a permitted limit of 45 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
123% over limit
Discharged 22 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
October 31, 2025
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
159% over limit
Discharged 5.18 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
109% over limit
Discharged 27 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
26% over limit
Discharged 56 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
624% over limit
Discharged 12.3 mg/L against a permitted limit of 1.7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
August 31, 2025
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
37% over limit
Discharged 52 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
643% over limit
Discharged 8.92 mg/L against a permitted limit of 1.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Solids, total suspended
12% over limit
Discharged 123 mg/L against a permitted limit of 110 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
793% over limit
Discharged 12.5 mg/L against a permitted limit of 1.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
1075% over limit
Discharged 2420 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
E. coli
135% over limit
Discharged 2420 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
109% over limit
Discharged 27 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
76% over limit
Discharged 123 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
May 31, 2025
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
186% over limit
Discharged 0 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
30% over limit
Discharged 91 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
186% over limit
Discharged 0 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
April 30, 2025
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
Solids, total suspended
4% over limit
Discharged 73 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
23% over limit
Discharged 57 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, total suspended
9% over limit
Discharged 76 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
114% over limit
Discharged 25 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
December 31, 2024
Toxicity [acute], Ceriodaphnia dubia
233% over limit
Discharged 1 toxic against a permitted limit of 0.3 toxic (DAILY MX)
DMR, Limited - Numeric Violation
Toxicity [acute], Pimephales promelas [Fathead Minnow]
233% over limit
Discharged 1 toxic against a permitted limit of 0.3 toxic (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
186% over limit
Discharged 0 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
186% over limit
Discharged 0 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
3% over limit
Discharged 72 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Solids, suspended percent removal
51% over limit
Discharged 47 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
37% over limit
Discharged 96 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Solids, total suspended
20% over limit
Discharged 84 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
34% over limit
Discharged 53 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
September 30, 2024
E. coli
483% over limit
Discharged 1200 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
3% over limit
Discharged 64 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
E. coli
17% over limit
Discharged 1200 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
August 31, 2024
E. coli
68% over limit
Discharged 1730 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
E. coli
740% over limit
Discharged 1730 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
July 31, 2024
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Solids, total suspended
46% over limit
Discharged 102 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
46% over limit
Discharged 49 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)