NPDES ID: AR0050571
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
Violations
March 31, 2026
Phosphorus, total [as P]
139% over limit
Discharged 2.39 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
136% over limit
Discharged 35.4 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
57% over limit
Discharged 35.4 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
59% over limit
Discharged 2.39 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
259% over limit
Discharged 26.9 mg/L against a permitted limit of 7.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
19% over limit
Discharged 11.9 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
438% over limit
Discharged 26.9 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Coliform, fecal general
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
52% over limit
Discharged 2.4 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Solids, total suspended
3% over limit
Discharged 23.2 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
472% over limit
Discharged 28.6 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
37% over limit
Discharged 20.5 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
450% over limit
Discharged 5.5 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 200 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
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]
297% over limit
Discharged 29.8 mg/L against a permitted limit of 7.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
273% over limit
Discharged 5.6 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total suspended
1% over limit
Discharged 22.8 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
1070% over limit
Discharged 11.7 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
1320% over limit
Discharged 21.3 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
12% over limit
Discharged 16.8 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
55% over limit
Discharged 2.23 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
694% over limit
Discharged 39.7 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
184% over limit
Discharged 21.3 mg/L against a permitted limit of 7.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
684% over limit
Discharged 39.2 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
41% over limit
Discharged 2.93 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
305% over limit
Discharged 6.08 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
444% over limit
Discharged 5.44 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
440% over limit
Discharged 40.5 mg/L against a permitted limit of 7.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Phosphorus, total [as P]
539% over limit
Discharged 6.39 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
345% over limit
Discharged 6.68 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
60% over limit
Discharged 0.94214079 kg/d against a permitted limit of 0.5902 kg/d (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
779% over limit
Discharged 49.2 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
495% over limit
Discharged 8.92 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
34% over limit
Discharged 0.79372819 kg/d against a permitted limit of 0.5902 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
229% over limit
Discharged 16.441 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
24% over limit
Discharged 3.58932397 kg/d against a permitted limit of 2.90559998 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
12% over limit
Discharged 16.8 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
542% over limit
Discharged 6.4233 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Phosphorus, total [as P]
289% over limit
Discharged 3.89 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
227% over limit
Discharged 4.9 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
37% over limit
Discharged 0.80898259 kg/d against a permitted limit of 0.5902 kg/d (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Phosphorus, total [as P]
690% over limit
Discharged 7.9 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
493% over limit
Discharged 8.9 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
169% over limit
Discharged 1.58899999 kg/d against a permitted limit of 0.5902 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
398% over limit
Discharged 24.9 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
269% over limit
Discharged 10.71439991 kg/d against a permitted limit of 2.90559998 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
779% over limit
Discharged 49.2 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Phosphorus, total [as P]
8% over limit
Discharged 0.63559999 kg/d against a permitted limit of 0.5902 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
194% over limit
Discharged 8.53519993 kg/d against a permitted limit of 2.90559998 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
113% over limit
Discharged 3.2 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
220% over limit
Discharged 3.2 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
760% over limit
Discharged 43 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
668% over limit
Discharged 43 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Phosphorus, total [as P]
556% over limit
Discharged 6.56 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
357% over limit
Discharged 6.86 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
11% over limit
Discharged 25 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
49% over limit
Discharged 22.3 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Phosphorus, total [as P]
311% over limit
Discharged 4.105 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
357% over limit
Discharged 6.85 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
17% over limit
Discharged 26.4 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
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
Coliform, fecal general
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
38% over limit
Discharged 7.74 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
205% over limit
Discharged 17.1 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
100% over limit
Discharged 10 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
280% over limit
Discharged 3.8 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
166% over limit
Discharged 39.9 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
2% over limit
Discharged 15.3 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
260% over limit
Discharged 5.4 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
110% over limit
Discharged 21 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Phosphorus, total [as P]
160% over limit
Discharged 2.6 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
23% over limit
Discharged 7.12779994 kg/d against a permitted limit of 5.81119995 kg/d (MO AVG)
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]
574% over limit
Discharged 33.7 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
80% over limit
Discharged 2.7 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
357% over limit
Discharged 34.3 mg/L against a permitted limit of 7.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
475% over limit
Discharged 16.70719986 kg/d against a permitted limit of 2.90559998 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 200 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
115% over limit
Discharged 1.27119999 kg/d against a permitted limit of 0.5902 kg/d (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Phosphorus, total [as P]
140% over limit
Discharged 2.4 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
67% over limit
Discharged 2.5 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
160% over limit
Discharged 19.5 mg/L against a permitted limit of 7.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
282% over limit
Discharged 19.1 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Nitrogen, ammonia total [as N]
177% over limit
Discharged 20.8 mg/L against a permitted limit of 7.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
108% over limit
Discharged 10.4 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
260% over limit
Discharged 3.6 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
213% over limit
Discharged 4.7 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Phosphorus, total [as P]
340% over limit
Discharged 4.4 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
162% over limit
Discharged 1046.2 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
360% over limit
Discharged 6.9 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
299% over limit
Discharged 29.9 mg/L against a permitted limit of 7.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
366% over limit
Discharged 23.3 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Nitrogen, ammonia total [as N]
147% over limit
Discharged 18.5 mg/L against a permitted limit of 7.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
370% over limit
Discharged 4.7 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
220% over limit
Discharged 4.8 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
270% over limit
Discharged 18.5 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
158% over limit
Discharged 12.9 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
291% over limit
Discharged 5.87 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
337% over limit
Discharged 4.37 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
150% over limit
Discharged 14 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Phosphorus, total [as P]
305% over limit
Discharged 4.05 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
312% over limit
Discharged 20.6 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
277% over limit
Discharged 5.66 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
286% over limit
Discharged 21.6 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Nitrogen, ammonia total [as N]
123% over limit
Discharged 12.5 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
470% over limit
Discharged 5.7 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
280% over limit
Discharged 5.7 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
150% over limit
Discharged 12.5 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Phosphorus, total [as P]
270% over limit
Discharged 3.7 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
280% over limit
Discharged 5.7 mg/L against a permitted limit of 1.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
56% over limit
Discharged 7.8 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
179% over limit
Discharged 15.6 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)