WALMART INC. - WALMART SUPERCENTER #5433
NPDES ID: AR0050733
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: 10 effluent violations.
Violations
June 30, 2026
Nitrogen, ammonia total [as N]
33% over limit
Discharged 10 mg/L against a permitted limit of 7.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
60% over limit
Discharged 8 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2026
BOD, carbonaceous [5 day, 20 C]
140% over limit
Discharged 36 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
37% over limit
Discharged 13.7 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
47% over limit
Discharged 11 mg/L against a permitted limit of 7.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
323% over limit
Discharged 22 mg/L against a permitted limit of 5.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
227% over limit
Discharged 17 mg/L against a permitted limit of 5.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
40% over limit
Discharged 3 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
33% over limit
Discharged 0.1816 kg/d against a permitted limit of 0.1362 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal general
20% over limit
Discharged 2400 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
March 31, 2026
Oxygen, dissolved [DO]
54% over limit
Discharged 2.32 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
13% over limit
Discharged 9 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Oxygen, dissolved [DO]
44% over limit
Discharged 2.8 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
December 31, 2025
Coliform, fecal general
245% over limit
Discharged 6896 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
20% over limit
Discharged 6 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
35% over limit
Discharged 10.1 mg/L against a permitted limit of 7.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
27% over limit
Discharged 0.63559999 kg/d against a permitted limit of 0.4994 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
127% over limit
Discharged 51 mg/L against a permitted limit of 22.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
53% over limit
Discharged 23 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Solids, total suspended
27% over limit
Discharged 19 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
2% over limit
Discharged 23 mg/L against a permitted limit of 22.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
BOD, carbonaceous [5 day, 20 C]
7% over limit
Discharged 16 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
64% over limit
Discharged 0.81719999 kg/d against a permitted limit of 0.4994 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
71% over limit
Discharged 38.4 mg/L against a permitted limit of 22.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
33% over limit
Discharged 0.1816 kg/d against a permitted limit of 0.1362 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
94% over limit
Discharged 29.1 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
70% over limit
Discharged 8.5 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
25% over limit
Discharged 0.454 kg/d against a permitted limit of 0.3632 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
24% over limit
Discharged 9.3 mg/L against a permitted limit of 7.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, total suspended
760% over limit
Discharged 3.90439997 kg/d against a permitted limit of 0.454 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
100% over limit
Discharged 0.2724 kg/d against a permitted limit of 0.1362 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
393% over limit
Discharged 148 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
167% over limit
Discharged 13.9 mg/L against a permitted limit of 5.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
480% over limit
Discharged 0.78995999 kg/d against a permitted limit of 0.1362 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
84% over limit
Discharged 9.55 mg/L against a permitted limit of 5.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
1133% over limit
Discharged 8.39899993 kg/d against a permitted limit of 0.681 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
324% over limit
Discharged 84.75 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, total suspended
33% over limit
Discharged 40 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
33% over limit
Discharged 0.90799999 kg/d against a permitted limit of 0.681 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
15% over limit
Discharged 23 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
60% over limit
Discharged 2 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
February 28, 2025
Solids, total suspended
460% over limit
Discharged 3.81359997 kg/d against a permitted limit of 0.681 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
123% over limit
Discharged 67 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
33% over limit
Discharged 16 mg/L against a permitted limit of 12 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
200% over limit
Discharged 1.36199999 kg/d against a permitted limit of 0.454 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
130% over limit
Discharged 46 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
233% over limit
Discharged 0.90799999 kg/d against a permitted limit of 0.2724 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
50% over limit
Discharged 0.2724 kg/d against a permitted limit of 0.1816 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Oil & Grease
40% over limit
Discharged 0.3178 kg/d against a permitted limit of 0.227 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
13% over limit
Discharged 9 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oil & Grease
25% over limit
Discharged 0.454 kg/d against a permitted limit of 0.3632 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
Nitrogen, ammonia total [as N]
25% over limit
Discharged 10 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oil & Grease
100% over limit
Discharged 0.454 kg/d against a permitted limit of 0.227 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Oil & Grease
147% over limit
Discharged 37 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
7% over limit
Discharged 0.72639999 kg/d against a permitted limit of 0.681 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Oil & Grease
150% over limit
Discharged 0.90799999 kg/d against a permitted limit of 0.3632 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
33% over limit
Discharged 0.3632 kg/d against a permitted limit of 0.2724 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Oil & Grease
270% over limit
Discharged 37 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
20% over limit
Discharged 24 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
50% over limit
Discharged 0.2724 kg/d against a permitted limit of 0.1816 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
67% over limit
Discharged 0.454 kg/d against a permitted limit of 0.2724 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
167% over limit
Discharged 32 mg/L against a permitted limit of 12 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
175% over limit
Discharged 22 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Nitrogen, ammonia total [as N]
23% over limit
Discharged 9.8 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
33% over limit
Discharged 16 mg/L against a permitted limit of 12 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
67% over limit
Discharged 0.454 kg/d against a permitted limit of 0.2724 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Coliform, fecal general
40% over limit
Discharged 1400 MPN/100mL against a permitted limit of 1000 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
August 31, 2024
Oil & Grease
0% over limit
Discharged 4.9 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 4.9 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
25% over limit
Discharged 0.454 kg/d against a permitted limit of 0.3632 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
25% over limit
Discharged 0.454 kg/d against a permitted limit of 0.3632 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 0.0908 kg/d against a permitted limit of 0.3632 kg/d (MO AVG)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 2 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.009 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 6 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
75% over limit
Discharged 0.3178 kg/d against a permitted limit of 0.1816 kg/d (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
75% over limit
Discharged 0.3178 kg/d against a permitted limit of 0.1816 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal general
0% over limit
Discharged 2 MPN/100mL against a permitted limit of 1000 MPN/100mL (30DA GEO)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0.5 mg/L against a permitted limit of 0 mg/L (INST MAX)
DMR, Monitor Only - Overdue
Oil & Grease
0% over limit
Discharged 0.1816 kg/d against a permitted limit of 0.3632 kg/d (DAILY MX)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 0.0454 kg/d against a permitted limit of 0.227 kg/d (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
60% over limit
Discharged 8 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
60% over limit
Discharged 8 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 8 mg/L against a permitted limit of 22.5 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0.2724 kg/d against a permitted limit of 0.4994 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
31% over limit
Discharged 9.8 mg/L against a permitted limit of 7.5 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
31% over limit
Discharged 9.8 mg/L against a permitted limit of 7.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0.1362 kg/d against a permitted limit of 0.227 kg/d (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.0035 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 6.2 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 7 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0.0908 kg/d against a permitted limit of 0.1362 kg/d (MO AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
13% over limit
Discharged 17 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
13% over limit
Discharged 17 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (12 hours ago)