SENATOBIA POTW
NPDES ID: MS0052221
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: 1 effluent violation.
Violations
March 31, 2026
E. coli
2489% over limit
Discharged 3262 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
E. coli
1017% over limit
Discharged 4579 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Numeric Violation
February 28, 2026
E. coli
Limit violation
Discharged 11149 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
51% over limit
Discharged 34.18619971 kg/d against a permitted limit of 22.69999981 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2107 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
59% over limit
Discharged 2.12 mg/L against a permitted limit of 1.33 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
274% over limit
Discharged 7.49 mg/L against a permitted limit of 2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
January 31, 2026
BOD, 5-day, 20 deg. C
278% over limit
Discharged 34 mg/L against a permitted limit of 9 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
18% over limit
Discharged 2.36 mg/L against a permitted limit of 2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
2339% over limit
Discharged 10000 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
115% over limit
Discharged 12.9 mg/L against a permitted limit of 6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
4171% over limit
Discharged 5382 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, suspended percent removal
20% over limit
Discharged 82 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
50% over limit
Discharged 9 mg/L against a permitted limit of 6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
59% over limit
Discharged 14.3 mg/L against a permitted limit of 9 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
47% over limit
Discharged 1.95 mg/L against a permitted limit of 1.33 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
182% over limit
Discharged 5.65 mg/L against a permitted limit of 2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
1871% over limit
Discharged 8082 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
1692% over limit
Discharged 2258 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
E. coli
2721% over limit
Discharged 11565 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
19% over limit
Discharged 53.4 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
157% over limit
Discharged 5.13 mg/L against a permitted limit of 2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
40% over limit
Discharged 79 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
E. coli
703% over limit
Discharged 1012 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
212% over limit
Discharged 18.7 mg/L against a permitted limit of 6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
49% over limit
Discharged 1.98 mg/L against a permitted limit of 1.33 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
281% over limit
Discharged 34.3 mg/L against a permitted limit of 9 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
October 31, 2025
BOD, 5-day, 20 deg. C
42% over limit
Discharged 8.5 mg/L against a permitted limit of 6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
2% over limit
Discharged 30.6 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
100% over limit
Discharged 18 mg/L against a permitted limit of 9 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
153% over limit
Discharged 62 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
August 31, 2025
BOD, 5-day, 20 deg. C
15% over limit
Discharged 6.9 mg/L against a permitted limit of 6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
74% over limit
Discharged 15.7 mg/L against a permitted limit of 9 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
117% over limit
Discharged 4.33 mg/L against a permitted limit of 2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
May 31, 2025
Oxygen, dissolved [DO]
17% over limit
Discharged 5 mg/L against a permitted limit of 6 mg/L (MINIMUM)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, 20 deg. C
13% over limit
Discharged 6.8 mg/L against a permitted limit of 6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
103% over limit
Discharged 18.3 mg/L against a permitted limit of 9 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
February 28, 2025
BOD, 5-day, 20 deg. C
26% over limit
Discharged 11.3 mg/L against a permitted limit of 9 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
December 31, 2024
BOD, 5-day, 20 deg. C
67% over limit
Discharged 15 mg/L against a permitted limit of 9 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
82% over limit
Discharged 10.9 mg/L against a permitted limit of 6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
453% over limit
Discharged 2269 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
33% over limit
Discharged 80 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
E. coli
19% over limit
Discharged 150 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Solids, suspended percent removal
27% over limit
Discharged 81 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
October 31, 2024
E. coli
36% over limit
Discharged 171 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
118% over limit
Discharged 13.1 mg/L against a permitted limit of 6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
167% over limit
Discharged 24 mg/L against a permitted limit of 9 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
312% over limit
Discharged 8.24 mg/L against a permitted limit of 2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
4000% over limit
Discharged 16812 MPN/100mL against a permitted limit of 410 MPN/100mL (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
179% over limit
Discharged 3.71 mg/L against a permitted limit of 1.33 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
242% over limit
Discharged 77.63399935 kg/d against a permitted limit of 22.69999981 kg/d (MX WK AV)
DMR, Limited - Numeric Violation
July 31, 2024
Zinc, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MX WK AV)
DMR, Monitor Only - Overdue
Copper, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, 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 (MX MO AV)
DMR, Monitor Only - 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
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
Zinc, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Copper, total recoverable
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 kg/d against a permitted limit of 0 kg/d (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 (MX WK AV)
DMR, Monitor Only - Overdue
Zinc, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - 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
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
Copper, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MX WK AV)
DMR, Monitor Only - Overdue
Zinc, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MX WK AV)
DMR, Monitor Only - 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
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
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
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
Nitrogen, total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Copper, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MX WK AV)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)