WALNUT RIDGE, CITY OF - WALNUT RIDGE WWTP
NPDES ID: AR0046566
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 14 effluent violations.
Violations
May 31, 2026
Mercury, total recoverable
34975% over limit
Discharged 0.0047 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Peracetic Acid
205% over limit
Discharged 3.05 mg/L against a permitted limit of 1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
32% over limit
Discharged 13.2 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
6114% over limit
Discharged 0.0039498 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
61% over limit
Discharged 24.1 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
24% over limit
Discharged 28 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
908% over limit
Discharged 4030 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Mercury, total recoverable
17372% over limit
Discharged 0.0047 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
April 30, 2026
BOD, carbonaceous [5 day, 20 C]
109% over limit
Discharged 20.9 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
1393% over limit
Discharged 0.0002 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
114% over limit
Discharged 0.0001362 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
80% over limit
Discharged 27 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
24% over limit
Discharged 28 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
643% over limit
Discharged 0.0002 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
March 31, 2026
pH
0% over limit
Discharged 5.87 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
Mercury, total recoverable
24329% over limit
Discharged 0.0155268 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
91% over limit
Discharged 19.1 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
96915% over limit
Discharged 0.013 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
48227% over limit
Discharged 0.013 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
83% over limit
Discharged 27.5 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
87% over limit
Discharged 42 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
12539% over limit
Discharged 0.0034 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
35% over limit
Discharged 20.3 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Peracetic Acid
105% over limit
Discharged 2.05 mg/L against a permitted limit of 1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Mercury, total recoverable
25273% over limit
Discharged 0.0034 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
13387971% over limit
Discharged 8.50945813 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
122% over limit
Discharged 33.3 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
119% over limit
Discharged 21.9 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Mercury, total recoverable
22257% over limit
Discharged 0.0142102 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
12% over limit
Discharged 0.000015 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
38% over limit
Discharged 31 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
135% over limit
Discharged 35.2 mg/L against a permitted limit of 15 mg/L (7 DA 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
BOD, carbonaceous [5 day, 20 C]
144% over limit
Discharged 24.4 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, carbonaceous [5 day, 20 C]
85% over limit
Discharged 18.5 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
96257% over limit
Discharged 0.0612446 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
82% over limit
Discharged 27.3 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
104% over limit
Discharged 0.000055 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
310% over limit
Discharged 0.000055 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
BOD, carbonaceous [5 day, 20 C]
67% over limit
Discharged 25 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
25257% over limit
Discharged 0.016117 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Peracetic Acid
18% over limit
Discharged 1.18 mg/L against a permitted limit of 1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.6 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
47% over limit
Discharged 14.7 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
44% over limit
Discharged 13 mg/L against a permitted limit of 9 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
40% over limit
Discharged 2790 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Mercury, total recoverable
12% over limit
Discharged 0.000015 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
BOD, carbonaceous [5 day, 20 C]
73% over limit
Discharged 26 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
41% over limit
Discharged 14.1 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
27% over limit
Discharged 0.000017 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
25614% over limit
Discharged 0.016344 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
pH
0% over limit
Discharged 5.9 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
Mercury, total recoverable
49% over limit
Discharged 0.00002 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
53% over limit
Discharged 2.35 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
204% over limit
Discharged 45.6 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
1188% over limit
Discharged 5150 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Mercury, total recoverable
30614% over limit
Discharged 0.019522 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
112% over limit
Discharged 21.2 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
85% over limit
Discharged 11.1 mg/L against a permitted limit of 6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Coliform, fecal general
316% over limit
Discharged 831 MPN/100mL against a permitted limit of 200 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
73% over limit
Discharged 25.9 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
81990% over limit
Discharged 0.011 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
40792% over limit
Discharged 0.011 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
14942757% over limit
Discharged 9.49767992 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.78 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
Coliform, fecal general
828% over limit
Discharged 3710 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Peracetic Acid
120% over limit
Discharged 2.2 mg/L against a permitted limit of 1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
33% over limit
Discharged 13.3 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Mercury, total recoverable
6220% over limit
Discharged 0.0017 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
1385614% over limit
Discharged 0.88075999 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
798% over limit
Discharged 1796 MPN/100mL against a permitted limit of 200 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Coliform, fecal general
738% over limit
Discharged 3350 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Mercury, total recoverable
12587% over limit
Discharged 0.0017 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.88 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
June 30, 2025
Coliform, fecal general
274% over limit
Discharged 747 MPN/100mL against a permitted limit of 200 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Coliform, fecal general
298% over limit
Discharged 1590 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Solids, total suspended
23% over limit
Discharged 18.5 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
273% over limit
Discharged 0.00005 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
113471% over limit
Discharged 0.072186 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
86% over limit
Discharged 0.00005 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
122% over limit
Discharged 50 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Mercury, total recoverable
5945% over limit
Discharged 0.00081 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
2911% over limit
Discharged 0.00081 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
9% over limit
Discharged 10.9 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
2235614% over limit
Discharged 1.42101999 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
53% over limit
Discharged 22.9 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2% over limit
Discharged 6.1 mg/L against a permitted limit of 6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
715% over limit
Discharged 3260 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.65 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 470 MPN/100mL against a permitted limit of 200 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Peracetic Acid
96% over limit
Discharged 1.96 mg/L against a permitted limit of 1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
144% over limit
Discharged 55 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
31% over limit
Discharged 19.7 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, total suspended
88% over limit
Discharged 28.2 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
132% over limit
Discharged 13.9 mg/L against a permitted limit of 6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
4361% over limit
Discharged 0.0012 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
91% over limit
Discharged 43 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.7 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
Coliform, fecal general
12% over limit
Discharged 2230 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Mercury, total recoverable
8855% over limit
Discharged 0.0012 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
27% over limit
Discharged 19 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
23% over limit
Discharged 12.3 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
232% over limit
Discharged 29.9 mg/L against a permitted limit of 9 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
1671329% over limit
Discharged 1.06235999 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Mercury, total recoverable
1318% over limit
Discharged 0.00019 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
80% over limit
Discharged 27 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
252043% over limit
Discharged 0.160262 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
207% over limit
Discharged 18.4 mg/L against a permitted limit of 6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
220% over limit
Discharged 28.8 mg/L against a permitted limit of 9 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
104% over limit
Discharged 46 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
116% over limit
Discharged 21.6 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
58% over limit
Discharged 3160 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Mercury, total recoverable
606% over limit
Discharged 0.00019 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
78% over limit
Discharged 1784 MPN/100mL against a permitted limit of 1000 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
121% over limit
Discharged 33.1 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - P. promelas
44% over limit
Discharged 56 % against a permitted limit of 100 % (7 DA MIN)
DMR, Limited - Numeric Violation
February 28, 2025
BOD, carbonaceous [5 day, 20 C]
37% over limit
Discharged 20.6 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
56% over limit
Discharged 35 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
37% over limit
Discharged 8.2 mg/L against a permitted limit of 6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 1427 MPN/100mL against a permitted limit of 1000 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
104% over limit
Discharged 18.4 mg/L against a permitted limit of 9 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
146% over limit
Discharged 0.000033 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
35% over limit
Discharged 13.5 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
425% over limit
Discharged 10500 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
26% over limit
Discharged 4.45 mg/L against a permitted limit of 6 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Mercury, total recoverable
23% over limit
Discharged 0.000033 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
145400% over limit
Discharged 0.0924798 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
21% over limit
Discharged 18.2 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Coliform, fecal general
Limit violation
Discharged 1153 MPN/100mL against a permitted limit of 1000 MPN/100mL (30DA GEO)
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
Mercury, total recoverable
137257% over limit
Discharged 0.0873042 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
196% over limit
Discharged 5920 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Mercury, total recoverable
355% over limit
Discharged 0.000061 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
23% over limit
Discharged 7.4 mg/L against a permitted limit of 6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
33% over limit
Discharged 13.3 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
93% over limit
Discharged 28.9 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
87% over limit
Discharged 16.8 mg/L against a permitted limit of 9 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
127% over limit
Discharged 0.000061 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
136% over limit
Discharged 53 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total suspended
149% over limit
Discharged 56 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 1367 MPN/100mL against a permitted limit of 1000 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
13% over limit
Discharged 10.2 mg/L against a permitted limit of 9 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
346% over limit
Discharged 0.00012 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
184329% over limit
Discharged 0.1172228 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
796% over limit
Discharged 0.00012 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
149% over limit
Discharged 4980 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Solids, total suspended
22% over limit
Discharged 18.3 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Coliform, fecal general
216% over limit
Discharged 6320 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Mercury, total recoverable
176% over limit
Discharged 0.000037 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
82% over limit
Discharged 41 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
38% over limit
Discharged 0.000037 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
85% over limit
Discharged 1852 MPN/100mL against a permitted limit of 1000 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Mercury, total recoverable
81900% over limit
Discharged 0.0521192 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
14% over limit
Discharged 5.19 mg/L against a permitted limit of 6 mg/L (INST MIN)
DMR, Limited - Numeric Violation
October 31, 2024
Mercury, total recoverable
2437% over limit
Discharged 0.00034 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
1164% over limit
Discharged 0.00034 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 3080 MPN/100mL against a permitted limit of 1000 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Coliform, fecal general
415% over limit
Discharged 10300 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Mercury, total recoverable
445471% over limit
Discharged 0.2832052 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Mercury, total recoverable
1085614% over limit
Discharged 0.69007999 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
8109% over limit
Discharged 0.0011 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
553% over limit
Discharged 2610 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Solids, total suspended
73% over limit
Discharged 39 mg/L against a permitted limit of 22.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
35% over limit
Discharged 5.4 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
19% over limit
Discharged 4.07 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
60% over limit
Discharged 9.6 mg/L against a permitted limit of 6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
3989% over limit
Discharged 0.0011 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 1772 MPN/100mL against a permitted limit of 200 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
August 31, 2024
Coliform, fecal general
Limit violation
Discharged 1728 MPN/100mL against a permitted limit of 200 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Mercury, total recoverable
580543% over limit
Discharged 0.3690566 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
951% over limit
Discharged 4205 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Mercury, total recoverable
2019% over limit
Discharged 0.00057 mg/L against a permitted limit of 0.0000269 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
4154% over limit
Discharged 0.00057 mg/L against a permitted limit of 0.0000134 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Mercury, total recoverable
6114% over limit
Discharged 0.0039498 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
17% over limit
Discharged 4.14 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 1521 MPN/100mL against a permitted limit of 200 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Coliform, fecal general
498% over limit
Discharged 2390 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)