BERTRAND WWTF
NPDES ID: MO0100111
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: 5 effluent violations, 1 single-event violation.
Violations
May 31, 2026
Solids, suspended percent removal
50% over limit
Discharged 47.5 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
66% over limit
Discharged 42.04 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
50% over limit
Discharged 4.34 mg/L against a permitted limit of 2.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
314% over limit
Discharged 11.6 mg/L against a permitted limit of 2.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
46% over limit
Discharged 48.8 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
85% over limit
Discharged 7.21 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]
282% over limit
Discharged 14.9 mg/L against a permitted limit of 3.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
pH
0% over limit
Discharged 5.94 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
246% over limit
Discharged 13.5 mg/L against a permitted limit of 3.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
185% over limit
Discharged 0.34 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
129% over limit
Discharged 8.01 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oil and grease [soxhlet extr.] tot.
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, percent removal
42% over limit
Discharged 50.38 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Oil and grease [soxhlet extr.] tot.
0% over limit
Discharged 2 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, suspended percent removal
186% over limit
Discharged 0 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 3.26 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
Solids, total suspended
325% over limit
Discharged 340 mg/L against a permitted limit of 80 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
183% over limit
Discharged 340 mg/L against a permitted limit of 120 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Solids, total suspended
239% over limit
Discharged 407 mg/L against a permitted limit of 120 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
25% over limit
Discharged 4.89 mg/L against a permitted limit of 3.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.17 SU against a permitted limit of 6.5 SU (MINIMUM)
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
Solids, total suspended
409% over limit
Discharged 407 mg/L against a permitted limit of 80 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
pH
0% over limit
Discharged 4.61 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
126% over limit
Discharged 20.87 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
September 30, 2025
pH
0% over limit
Discharged 2.61 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, suspended percent removal
59% over limit
Discharged 44.3 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
19% over limit
Discharged 1.43 mg/L against a permitted limit of 1.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
E. coli
67% over limit
Discharged 345 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
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
June 30, 2025
Solids, suspended percent removal
185% over limit
Discharged 0.27 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, suspended percent removal
57% over limit
Discharged 45 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
E. coli
111% over limit
Discharged 435 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
198% over limit
Discharged 8.35 mg/L against a permitted limit of 2.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
185% over limit
Discharged 11.1 mg/L against a permitted limit of 3.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
117% over limit
Discharged 23.91 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
159% over limit
Discharged 10.1 mg/L against a permitted limit of 3.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
3% over limit
Discharged 64.1 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
January 31, 2025
pH
0% over limit
Discharged 6.48 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
200% over limit
Discharged 11.7 mg/L against a permitted limit of 3.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
BOD, 5-day, percent removal
39% over limit
Discharged 51.42 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
83% over limit
Discharged 6.42 mg/L against a permitted limit of 3.5 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
November 30, 2024
Solids, suspended percent removal
105% over limit
Discharged 28.26 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
18% over limit
Discharged 4.59 mg/L against a permitted limit of 3.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 6.24 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
120% over limit
Discharged 4.39 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 13.96 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
September 30, 2024
E. coli
50% over limit
Discharged 1550 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
72% over limit
Discharged 2.92 mg/L against a permitted limit of 1.7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.98 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
E. coli
652% over limit
Discharged 1550 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
August 31, 2024
Nitrogen, ammonia total [as N]
39% over limit
Discharged 1.67 mg/L against a permitted limit of 1.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 6.3 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
July 31, 2024
Solids, total suspended
36% over limit
Discharged 163 mg/L against a permitted limit of 120 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
104% over limit
Discharged 163 mg/L against a permitted limit of 80 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
186% over limit
Discharged 0.01 % against a permitted limit of 65 % (MO AV MN)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.23 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)