MAGNOLIA POTW, NORTH
NPDES ID: MS0026891
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
Violations
December 31, 2025
Chlorine, total residual
160% over limit
Discharged 0.26 mg/L against a permitted limit of 0.1 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
130% over limit
Discharged 69 mg/L against a permitted limit of 30 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
E. coli
1821% over limit
Discharged 2420 MPN/100mL against a permitted limit of 126 MPN/100mL (MX MO AV)
DMR, Limited - Numeric Violation
E. coli
490% over limit
Discharged 2420 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
53% over limit
Discharged 69 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
2% over limit
Discharged 92 mg/L against a permitted limit of 90 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
117% over limit
Discharged 0.39 mg/L against a permitted limit of 0.18 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
June 30, 2025
Solids, total suspended
0% over limit
Discharged 1.18039999 kg/d against a permitted limit of 131.66 kg/d (MX MO AV)
DMR, Limited - Overdue
E. coli
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 4 mg/L against a permitted limit of 90 mg/L (MX MO AV)
DMR, Limited - Overdue
BOD, 5-day, percent removal
0% over limit
Discharged 97.8 % against a permitted limit of 65 % (MINIMUM)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 9 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
27% over limit
Discharged 4.4 mg/L against a permitted limit of 6 mg/L (MINIMUM)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
27% over limit
Discharged 4.4 mg/L against a permitted limit of 6 mg/L (MINIMUM)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
0% over limit
Discharged 98.6 % against a permitted limit of 65 % (MINIMUM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 14.7 mg/L against a permitted limit of 0 mg/L (MX WK AV)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 5.8 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 5.8 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 1070 mg/L against a permitted limit of 0 mg/L (MX MO AV)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 401 mg/L against a permitted limit of 0 mg/L (MX MO AV)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 318.70799732 kg/d against a permitted limit of 0 kg/d (MX MO AV)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 2.45159998 kg/d against a permitted limit of 0 kg/d (MX WK AV)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
345% over limit
Discharged 8.9 mg/L against a permitted limit of 2 mg/L (MX MO AV)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
345% over limit
Discharged 8.9 mg/L against a permitted limit of 2 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
0% over limit
Discharged 9 mg/L against a permitted limit of 30 mg/L (MX MO AV)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 2.63319998 kg/d against a permitted limit of 4.54 kg/d (MX WK AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0.4994 kg/d against a permitted limit of 44.038 kg/d (MX MO AV)
DMR, Limited - Overdue
Chlorine, total residual
4900% over limit
Discharged 9 mg/L against a permitted limit of 0.18 mg/L (MX WK AV)
DMR, Limited - Overdue
Chlorine, total residual
4900% over limit
Discharged 9 mg/L against a permitted limit of 0.18 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
0% over limit
Discharged 14.7 mg/L against a permitted limit of 0 mg/L (MX MO AV)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 318.70799732 kg/d against a permitted limit of 0 kg/d (MX WK AV)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 37.68199968 kg/d against a permitted limit of 0 kg/d (MX MO AV)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.0796 MGD against a permitted limit of 0 MGD (MX WK AV)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.2 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 401 mg/L against a permitted limit of 0 mg/L (MX WK AV)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0.4994 kg/d against a permitted limit of 65.83 kg/d (MX WK AV)
DMR, Limited - Overdue
Chlorine, total residual
1900% over limit
Discharged 2 mg/L against a permitted limit of 0.1 mg/L (MX MO AV)
DMR, Limited - Overdue
Chlorine, total residual
1900% over limit
Discharged 2 mg/L against a permitted limit of 0.1 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.0796 MGD against a permitted limit of 0.387 MGD (MX MO AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 1.18039999 kg/d against a permitted limit of 197.944 kg/d (MX WK AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 4 mg/L against a permitted limit of 135 mg/L (MX WK AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 37.68199968 kg/d against a permitted limit of 0 kg/d (MX WK AV)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 2.63319998 kg/d against a permitted limit of 2.724 kg/d (MX MO AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 1070 mg/L against a permitted limit of 0 mg/L (MX WK AV)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 2.45159998 kg/d against a permitted limit of 0 kg/d (MX MO AV)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
197% over limit
Discharged 8.9 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
197% over limit
Discharged 8.9 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 126 MPN/100mL (MX MO AV)
DMR, Limited - Overdue
December 31, 2024
E. coli
1821% over limit
Discharged 2420 MPN/100mL against a permitted limit of 126 MPN/100mL (MX MO AV)
DMR, Limited - Numeric Violation
E. coli
490% over limit
Discharged 2420 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
1122% over limit
Discharged 2.2 mg/L against a permitted limit of 0.18 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
340% over limit
Discharged 0.44 mg/L against a permitted limit of 0.1 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)