CAMPBELL WWTF
NPDES ID: MO0022861
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: 3 effluent violations, 30 reporting violations.
Violations
May 31, 2026
Solids, total suspended
10% over limit
Discharged 33 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
12% over limit
Discharged 13.6 mg/L against a permitted limit of 12.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
339% over limit
Discharged 13.6 mg/L against a permitted limit of 3.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, 5-day, 20 deg. C
0% over limit
Discharged 32.7 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 9 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 0.08 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
8% over limit
Discharged 13.1 mg/L against a permitted limit of 12.1 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
8% over limit
Discharged 13.1 mg/L against a permitted limit of 12.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 14 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 28.4 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Oil and grease [soxhlet extr.] tot.
0% over limit
Discharged 2 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 24.6 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Oil and grease [soxhlet extr.] tot.
0% over limit
Discharged 2 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 10.7 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 10.7 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 24.6 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 0.08 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.61 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 4.65 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, percent removal
22% over limit
Discharged 81.75 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
BOD, 5-day, percent removal
22% over limit
Discharged 81.75 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 9 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 28.4 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 4.65 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
323% over limit
Discharged 13.1 mg/L against a permitted limit of 3.1 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
323% over limit
Discharged 13.1 mg/L against a permitted limit of 3.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.264751 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 47 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 1.67 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 4.62 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 1.67 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 4.62 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 1.193828 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.61 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 14 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, suspended percent removal
0% over limit
Discharged 95.36 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
February 28, 2026
Solids, total suspended
0% over limit
Discharged 9 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
19% over limit
Discharged 14.4 mg/L against a permitted limit of 12.1 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
19% over limit
Discharged 14.4 mg/L against a permitted limit of 12.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
0% over limit
Discharged 18.4 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 3.284232 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 18.4 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 9 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.508958 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 317 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
365% over limit
Discharged 14.4 mg/L against a permitted limit of 3.1 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
365% over limit
Discharged 14.4 mg/L against a permitted limit of 3.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
0% over limit
Discharged 62 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
January 31, 2026
BOD, 5-day, 20 deg. C
0% over limit
Discharged 8.98 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
235% over limit
Discharged 10.4 mg/L against a permitted limit of 3.1 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
235% over limit
Discharged 10.4 mg/L against a permitted limit of 3.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
0% over limit
Discharged 8.98 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 6 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 6 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 1.318858 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 10.4 mg/L against a permitted limit of 12.1 mg/L (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.531558 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 153 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 114 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
December 31, 2025
Nitrogen, ammonia total [as N]
0% over limit
Discharged 38 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 3.43 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.81 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 6.75 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 6.75 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Oil and grease [soxhlet extr.] tot.
0% over limit
Discharged 2 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 51.6 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 6.91 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 0.03 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.81 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 6.91 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 3.88 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, suspended percent removal
0% over limit
Discharged 87.34 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 0.03 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 3.88 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, percent removal
0% over limit
Discharged 93.04 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 3.43 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 51.6 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 38 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Oil and grease [soxhlet extr.] tot.
0% over limit
Discharged 2 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Overdue
September 30, 2025
Solids, total suspended
27% over limit
Discharged 38 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
338% over limit
Discharged 7.01 mg/L against a permitted limit of 1.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
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
523% over limit
Discharged 6.49 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, suspended percent removal
523% over limit
Discharged 6.49 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
August 31, 2025
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
July 31, 2025
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
3% over limit
Discharged 31 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 34.6 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
15% over limit
Discharged 34.6 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, percent removal
567% over limit
Discharged 0 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrite + Nitrate total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 24 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
89% over limit
Discharged 3.4 mg/L against a permitted limit of 1.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
9% over limit
Discharged 1120 MPN/100mL against a permitted limit of 1030 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
May 31, 2025
Toxicity [acute], Pimephales promelas [Fathead Minnow]
0% over limit
Discharged 0 toxic against a permitted limit of 0 toxic (DAILY MX)
DMR, Monitor Only - Overdue
Toxicity [acute], Ceriodaphnia dubia
0% over limit
Discharged 0 toxic against a permitted limit of 0 toxic (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
43% over limit
Discharged 43 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 444 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
13% over limit
Discharged 2.6 mg/L against a permitted limit of 2.3 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
March 31, 2025
Nitrogen, ammonia total [as N]
217% over limit
Discharged 9.84 mg/L against a permitted limit of 3.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
16% over limit
Discharged 3.59 mg/L against a permitted limit of 3.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)