MADISON MINE
NPDES ID: MO0098752
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: 20 effluent violations, 2 single-event violations.
Violations
May 31, 2026
Cadmium, total recoverable
20% over limit
Discharged 0.0006 mg/L against a permitted limit of 0.0005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
1% over limit
Discharged 0.0155 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
177% over limit
Discharged 0.0155 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
12% over limit
Discharged 1.24000006 mg/L against a permitted limit of 1.10300005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
3467% over limit
Discharged 1.78000008 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorides + Sulfates
4% over limit
Discharged 1040 mg/L against a permitted limit of 1000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorides + Sulfates
4% over limit
Discharged 1040 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
200% over limit
Discharged 0.0006 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2100% over limit
Discharged 1.78000008 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
79% over limit
Discharged 1.24000006 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Cadmium, total recoverable
50% over limit
Discharged 0.0003 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2150% over limit
Discharged 1.82000009 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
72% over limit
Discharged 1.19000006 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
8% over limit
Discharged 1.19000006 mg/L against a permitted limit of 1.10300005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
3547% over limit
Discharged 1.82000009 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
32% over limit
Discharged 0.0029 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
345% over limit
Discharged 0.0249 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
5% over limit
Discharged 0.0023 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
63% over limit
Discharged 0.0249 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
50% over limit
Discharged 0.0003 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
316% over limit
Discharged 187 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total recoverable
411% over limit
Discharged 0.0332 mg/L against a permitted limit of 0.0065 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total recoverable
34% over limit
Discharged 0.17400001 mg/L against a permitted limit of 0.13020001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
60% over limit
Discharged 0.0008 mg/L against a permitted limit of 0.0005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
76% over limit
Discharged 79 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Toxicity [acute], Ceriodaphnia dubia
Limit violation
Discharged 16 toxic against a permitted limit of 0.3 toxic (VALUE)
DMR, Limited - Numeric Violation
Lead, total recoverable
814% over limit
Discharged 0.0201 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Zinc, total recoverable
100% over limit
Discharged 0.17400001 mg/L against a permitted limit of 0.087 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
161% over limit
Discharged 0.13000001 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
523% over limit
Discharged 187 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
42% over limit
Discharged 42.5 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
61% over limit
Discharged 0.13000001 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
2614% over limit
Discharged 0.15200001 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
6127% over limit
Discharged 0.13700001 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
893% over limit
Discharged 0.15200001 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total recoverable
2008% over limit
Discharged 0.13700001 mg/L against a permitted limit of 0.0065 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
300% over limit
Discharged 0.0008 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Copper, total recoverable
35% over limit
Discharged 0.0206 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total recoverable
227% over limit
Discharged 0.0072 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
1297% over limit
Discharged 1.13000005 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2165% over limit
Discharged 1.13000005 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
11% over limit
Discharged 0.0072 mg/L against a permitted limit of 0.0065 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
1% over limit
Discharged 0.70000003 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
268% over limit
Discharged 0.0206 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Lead, total recoverable
191% over limit
Discharged 0.0064 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorides + Sulfates
9% over limit
Discharged 1085.1 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
3347% over limit
Discharged 1.72000008 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
53% over limit
Discharged 1.06000005 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2026% over limit
Discharged 1.72000008 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorides + Sulfates
9% over limit
Discharged 1085.1 mg/L against a permitted limit of 1000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
239% over limit
Discharged 0.0519 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
827% over limit
Discharged 0.0519 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Copper, total recoverable
87% over limit
Discharged 0.0286 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Toxicity [acute], Ceriodaphnia dubia
Limit violation
Discharged 16 toxic against a permitted limit of 0.3 toxic (VALUE)
DMR, Limited - Numeric Violation
Nickel, total recoverable
1915% over limit
Discharged 1.63000008 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
3167% over limit
Discharged 1.63000008 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
44% over limit
Discharged 1.00000005 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
411% over limit
Discharged 0.0286 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Copper, total recoverable
407% over limit
Discharged 0.0284 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
52% over limit
Discharged 1.05000005 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
86% over limit
Discharged 0.0284 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
50% over limit
Discharged 0.0003 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
1902% over limit
Discharged 1.62000008 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
3146% over limit
Discharged 1.62000008 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
177% over limit
Discharged 0.0061 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Cobalt, total recoverable
46% over limit
Discharged 1.01000005 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
359% over limit
Discharged 0.0257 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
3086% over limit
Discharged 1.59000008 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
68% over limit
Discharged 0.0257 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
50% over limit
Discharged 0.0003 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorides + Sulfates
6% over limit
Discharged 1055.74 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorides + Sulfates
6% over limit
Discharged 1055.74 mg/L against a permitted limit of 1000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
1865% over limit
Discharged 1.59000008 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Toxicity [acute], Ceriodaphnia dubia
4897% over limit
Discharged 14.99 toxic against a permitted limit of 0.3 toxic (VALUE)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2806% over limit
Discharged 1.45000007 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
280% over limit
Discharged 0.0213 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
39% over limit
Discharged 0.0213 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
43% over limit
Discharged 0.99100005 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
1692% over limit
Discharged 1.45000007 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorides + Sulfates
4% over limit
Discharged 1035.35 mg/L against a permitted limit of 1000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorides + Sulfates
4% over limit
Discharged 1035.35 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Copper, total recoverable
405% over limit
Discharged 0.0283 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2345% over limit
Discharged 1.22000006 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
85% over limit
Discharged 0.0283 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
1408% over limit
Discharged 1.22000006 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total recoverable
68% over limit
Discharged 0.0037 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Nickel, total recoverable
1779% over limit
Discharged 1.52000007 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
50% over limit
Discharged 0.0003 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
116% over limit
Discharged 0.0121 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2946% over limit
Discharged 1.52000007 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
8% over limit
Discharged 0.75000004 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Nickel, total recoverable
3006% over limit
Discharged 1.55000007 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
23% over limit
Discharged 0.0027 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
620% over limit
Discharged 0.0036 mg/L against a permitted limit of 0.0005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
1700% over limit
Discharged 0.0036 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
22% over limit
Discharged 0.0186 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Toxicity [acute], Ceriodaphnia dubia
1367% over limit
Discharged 4.4 toxic against a permitted limit of 0.3 toxic (VALUE)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
44% over limit
Discharged 1.00000005 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
1816% over limit
Discharged 1.55000007 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
232% over limit
Discharged 0.0186 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Lead, total recoverable
23% over limit
Discharged 0.0027 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
271% over limit
Discharged 0.0208 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
141% over limit
Discharged 0.0053 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2846% over limit
Discharged 1.47000007 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
1717% over limit
Discharged 1.47000007 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
39% over limit
Discharged 0.96200005 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
36% over limit
Discharged 0.0208 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Lead, total recoverable
14% over limit
Discharged 0.0025 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
366% over limit
Discharged 0.0261 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
4309% over limit
Discharged 2.2000001 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
177% over limit
Discharged 0.0061 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
103% over limit
Discharged 1.41000007 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
28% over limit
Discharged 1.41000007 mg/L against a permitted limit of 1.10300005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2619% over limit
Discharged 2.2000001 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
71% over limit
Discharged 0.0261 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Copper, total recoverable
366% over limit
Discharged 0.0261 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
1865% over limit
Discharged 1.59000008 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
49% over limit
Discharged 1.03000005 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
71% over limit
Discharged 0.0261 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total recoverable
132% over limit
Discharged 0.0051 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
5% over limit
Discharged 0.0023 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
3086% over limit
Discharged 1.59000008 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Lead, total recoverable
155% over limit
Discharged 0.0056 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
75% over limit
Discharged 1.21000006 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
300% over limit
Discharged 0.0612 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2162% over limit
Discharged 1.83000009 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total recoverable
623% over limit
Discharged 0.0159 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
993% over limit
Discharged 0.0612 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
10% over limit
Discharged 1.21000006 mg/L against a permitted limit of 1.10300005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
3567% over limit
Discharged 1.83000009 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
145% over limit
Discharged 0.0159 mg/L against a permitted limit of 0.0065 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
50% over limit
Discharged 0.0003 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Nickel, total recoverable
2162% over limit
Discharged 1.83000009 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
3567% over limit
Discharged 1.83000009 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
32% over limit
Discharged 0.0029 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
60% over limit
Discharged 0.0245 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
35% over limit
Discharged 0.93500004 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
338% over limit
Discharged 0.0245 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Cadmium, total recoverable
50% over limit
Discharged 0.0003 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
65% over limit
Discharged 1.14000005 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
436% over limit
Discharged 0.03 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
68% over limit
Discharged 0.0037 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
3% over limit
Discharged 1.14000005 mg/L against a permitted limit of 1.10300005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
3647% over limit
Discharged 1.87000009 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2211% over limit
Discharged 1.87000009 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
96% over limit
Discharged 0.03 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Lead, total recoverable
283% over limit
Discharged 0.0249 mg/L against a permitted limit of 0.0065 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
126% over limit
Discharged 0.0346 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2625% over limit
Discharged 1.36000006 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
373% over limit
Discharged 0.0104 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
60% over limit
Discharged 0.0104 mg/L against a permitted limit of 0.0065 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
187% over limit
Discharged 86 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
91% over limit
Discharged 86 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
1581% over limit
Discharged 1.36000006 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total recoverable
1032% over limit
Discharged 0.0249 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
3% over limit
Discharged 0.71100003 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
518% over limit
Discharged 0.0346 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
50% over limit
Discharged 0.0003 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Lead, total recoverable
100% over limit
Discharged 0.0044 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
50% over limit
Discharged 0.0003 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
109% over limit
Discharged 0.032 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
4189% over limit
Discharged 2.1400001 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2545% over limit
Discharged 2.1400001 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
471% over limit
Discharged 0.032 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
36% over limit
Discharged 0.94400004 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Cadmium, total recoverable
100% over limit
Discharged 0.001 mg/L against a permitted limit of 0.0005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
400% over limit
Discharged 0.001 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
100% over limit
Discharged 0.001 mg/L against a permitted limit of 0.0005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
53% over limit
Discharged 0.0234 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
318% over limit
Discharged 0.0234 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorides + Sulfates
4% over limit
Discharged 1043.8 mg/L against a permitted limit of 1000 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
39% over limit
Discharged 1.53000007 mg/L against a permitted limit of 1.10300005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
5752% over limit
Discharged 2.92000014 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
121% over limit
Discharged 1.53000007 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorides + Sulfates
4% over limit
Discharged 1043.8 mg/L against a permitted limit of 1000 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total recoverable
68% over limit
Discharged 0.0037 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
400% over limit
Discharged 0.001 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
3509% over limit
Discharged 2.92000014 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Cadmium, total recoverable
100% over limit
Discharged 0.001 mg/L against a permitted limit of 0.0005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total recoverable
227% over limit
Discharged 0.0072 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
400% over limit
Discharged 0.001 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
46% over limit
Discharged 1.01000005 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
14% over limit
Discharged 0.0025 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
100% over limit
Discharged 0.001 mg/L against a permitted limit of 0.0005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nickel, total recoverable
4830% over limit
Discharged 2.46000012 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Zinc, total recoverable
5% over limit
Discharged 0.0913 mg/L against a permitted limit of 0.087 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
11% over limit
Discharged 0.0072 mg/L against a permitted limit of 0.0065 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
400% over limit
Discharged 0.001 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
2941% over limit
Discharged 2.46000012 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
150% over limit
Discharged 0.0382 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
582% over limit
Discharged 0.0382 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Nickel, total recoverable
2187% over limit
Discharged 1.85000009 mg/L against a permitted limit of 0.0809 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
180% over limit
Discharged 0.0157 mg/L against a permitted limit of 0.0056 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cobalt, total recoverable
57% over limit
Discharged 1.09000005 mg/L against a permitted limit of 0.69300003 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
3607% over limit
Discharged 1.85000009 mg/L against a permitted limit of 0.0499 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
150% over limit
Discharged 0.0005 mg/L against a permitted limit of 0.0002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
91% over limit
Discharged 0.0042 mg/L against a permitted limit of 0.0022 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
3% over limit
Discharged 0.0157 mg/L against a permitted limit of 0.0153 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)