COAHOMA POTW
NPDES ID: MS0044237
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 1 compliance schedule violation.
Violations
December 31, 2025
Nitrogen, ammonia total [as N]
162% over limit
Discharged 1.54359999 kg/d against a permitted limit of 0.5902 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
263% over limit
Discharged 1.31659999 kg/d against a permitted limit of 0.3632 kg/d (MX MO AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
599% over limit
Discharged 13.98 mg/L against a permitted limit of 2 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Numeric Violation
Sludge settleability 30 minute
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MINIMUM)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MX WK AV)
DMR, Monitor Only - Overdue
Oxygen, dissolved [DO]
51% over limit
Discharged 2.92 mg/L against a permitted limit of 6 mg/L (MINIMUM)
DMR, Limited - Numeric Violation
E. coli
53% over limit
Discharged 193 MPN/100mL against a permitted limit of 126 MPN/100mL (MX MO AV)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MX MO AV)
DMR, Monitor Only - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.041 mg/L (MX WK AV)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.024 mg/L (MX MO AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 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 0 kg/d against a permitted limit of 0 kg/d (MX WK AV)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 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 0 kg/d against a permitted limit of 0 kg/d (MX MO AV)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
447% over limit
Discharged 16.4 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Sludge settleability 30 minute
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MAXIMUM)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
33% over limit
Discharged 13.3 mg/L against a permitted limit of 10 mg/L (MX MO AV)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 0.5902 kg/d (MX WK AV)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MX MO AV)
DMR, Monitor Only - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.024 mg/L (MX MO AV)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
333% over limit
Discharged 8.66 mg/L against a permitted limit of 2 mg/L (MX MO AV)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
333% over limit
Discharged 8.66 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 8.8 mg/L against a permitted limit of 10 mg/L (MX MO AV)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 3 mg/L (MX WK AV)
DMR, Limited - Overdue
E. coli
144% over limit
Discharged 308 MPN/100mL against a permitted limit of 126 MPN/100mL (MX MO AV)
DMR, Limited - Overdue
E. coli
144% over limit
Discharged 308 MPN/100mL against a permitted limit of 126 MPN/100mL (MX MO AV)
DMR, Limited - Numeric Violation
E. coli
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MX MO AV)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.4 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 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 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 0 mg/L against a permitted limit of 0 mg/L (MX WK AV)
DMR, Monitor Only - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 0 mg/L against a permitted limit of 6 mg/L (MINIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 8.2 SU against a permitted limit of 0 SU (MINIMUM)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MX MO AV)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0.95339999 kg/d against a permitted limit of 1.81599998 kg/d (MX MO AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MX WK AV)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 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 mg/L against a permitted limit of 15 mg/L (MX WK AV)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MX WK AV)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 8.8 SU against a permitted limit of 0 SU (MAXIMUM)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MX MO AV)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MX WK AV)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0.5902 kg/d against a permitted limit of 5.44799995 kg/d (MX MO AV)
DMR, Limited - Overdue
Sludge settleability 30 minute
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MINIMUM)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MX WK AV)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 21.98 mg/L against a permitted limit of 0 mg/L (MX MO AV)
DMR, Monitor Only - Overdue
Sludge settleability 30 minute
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MAXIMUM)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 5.5 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 0 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 139 mg/L against a permitted limit of 0 mg/L (MX MO AV)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 8.17199993 kg/d (MX WK AV)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MX WK AV)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 61.8 mg/L against a permitted limit of 0 mg/L (MX MO AV)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MX WK AV)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
150% over limit
Discharged 0.90799999 kg/d against a permitted limit of 0.3632 kg/d (MX MO AV)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
150% over limit
Discharged 0.90799999 kg/d against a permitted limit of 0.3632 kg/d (MX MO AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MX MO AV)
DMR, Monitor Only - Overdue
BOD, 5-day, percent removal
0% over limit
Discharged 94 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 2.72399998 kg/d (MX WK AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.041 mg/L (MX WK AV)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MX MO AV)
DMR, Monitor Only - Overdue
Solids, suspended percent removal
0% over limit
Discharged 91 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 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 0.028 MGD against a permitted limit of 0.05 MGD (MX MO AV)
DMR, Limited - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)