100 NORTHERN AVENUE
NPDES ID: MAG912127
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: 11 effluent violations, 33 reporting violations.
Violations
May 31, 2026
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total recoverable
10% over limit
Discharged 0.0094 mg/L against a permitted limit of 0.00851735 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
743% over limit
Discharged 0.03147 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
444% over limit
Discharged 0.03147 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
90% over limit
Discharged 19 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Zinc, total recoverable
0% over limit
Discharged 0.01034 mg/L against a permitted limit of 0.081 mg/L (MO AVG)
DMR, Limited - Overdue
Iron, total recoverable
0% over limit
Discharged 0.12730001 mg/L against a permitted limit of 5.00000024 mg/L (DAILY MX)
DMR, Limited - Overdue
Turbidity
0% over limit
Discharged 0.76 NTU against a permitted limit of 50 NTU (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 5 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.0504 MGD against a permitted limit of 0.0504 MGD (DAILY MX)
DMR, Limited - Overdue
Lead, total recoverable
0% over limit
Discharged 0.00486 mg/L against a permitted limit of 0.00851735 mg/L (MO AVG)
DMR, Limited - Overdue
Nickel, total recoverable
0% over limit
Discharged 0.002 mg/L against a permitted limit of 0.0082 mg/L (MO AVG)
DMR, Limited - Overdue
Total Group I Polycyclic Aromatic Hydrocarbons
0% over limit
Discharged 0.001 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Zinc, total recoverable
0% over limit
Discharged 0.01034 mg/L against a permitted limit of 0.086 mg/L (DAILY MX)
DMR, Limited - Overdue
Hydrocarbons, total petroleum
0% over limit
Discharged 4 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Overdue
Antimony, total recoverable
0% over limit
Discharged 0.004 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Naphthalene
0% over limit
Discharged 0.00093 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Chromium, hexavalent tot recoverable
0% over limit
Discharged 0.01 mg/L against a permitted limit of 0.32300002 mg/L (DAILY MX)
DMR, Limited - Overdue
Copper, total recoverable
270% over limit
Discharged 0.01383 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Overdue
Copper, total recoverable
270% over limit
Discharged 0.01383 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Arsenic, total recoverable
0% over limit
Discharged 0.00261 mg/L against a permitted limit of 0.036 mg/L (MO AVG)
DMR, Limited - Overdue
Antimony, total recoverable
0% over limit
Discharged 0.004 mg/L against a permitted limit of 0.20600001 mg/L (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.7 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Overdue
Total Group I Polycyclic Aromatic Hydrocarbons
0% over limit
Discharged 0.001 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0.00261 mg/L against a permitted limit of 0.069 mg/L (DAILY MX)
DMR, Limited - Overdue
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Overdue
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chromium, hexavalent tot recoverable
0% over limit
Discharged 0.01 mg/L against a permitted limit of 0.05 mg/L (MO AVG)
DMR, Limited - Overdue
Lead, total recoverable
0% over limit
Discharged 0.00486 mg/L against a permitted limit of 0.16000001 mg/L (DAILY MX)
DMR, Limited - Overdue
Naphthalene
0% over limit
Discharged 0.00093 mg/L against a permitted limit of 0.02 mg/L (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.7 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Overdue
Chloride, total recoverable
0% over limit
Discharged 1160 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
200% over limit
Discharged 30 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, total [as N]
200% over limit
Discharged 30 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved [TDS]
0% over limit
Discharged 2300 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 30 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Overdue
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
139% over limit
Discharged 0.01383 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Overdue
Copper, total recoverable
139% over limit
Discharged 0.01383 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Total Group II Polycyclic Aromatic Hydrocarbons
0% over limit
Discharged 0.1 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nickel, total recoverable
0% over limit
Discharged 0.002 mg/L against a permitted limit of 1.45000007 mg/L (DAILY MX)
DMR, Limited - Overdue
Total Group II Polycyclic Aromatic Hydrocarbons
0% over limit
Discharged 0.1 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Overdue
March 31, 2026
Nitrogen, total [as N]
710% over limit
Discharged 81 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
268% over limit
Discharged 0.02126 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
469% over limit
Discharged 0.02126 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Copper, total recoverable
7% over limit
Discharged 0.004 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
210% over limit
Discharged 31 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Cyanide, total [as CN]
500% over limit
Discharged 0.006 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
40% over limit
Discharged 14 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
500% over limit
Discharged 0.006 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
49% over limit
Discharged 0.00555 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Copper, total recoverable
1056% over limit
Discharged 0.04319 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
647% over limit
Discharged 0.04319 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Copper, total recoverable
130% over limit
Discharged 0.00858 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
48% over limit
Discharged 0.00858 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
80% over limit
Discharged 18 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
75% over limit
Discharged 0.00652 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
13% over limit
Discharged 0.00652 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
719% over limit
Discharged 0.04736 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
1168% over limit
Discharged 0.04736 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Copper, total recoverable
53% over limit
Discharged 0.00887 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
137% over limit
Discharged 0.00887 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Cyanide, total [as CN]
500% over limit
Discharged 0.006 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
337% over limit
Discharged 0.02526 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
576% over limit
Discharged 0.02526 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
450% over limit
Discharged 0.0055 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
pH
0% over limit
Discharged 9.3 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
700% over limit
Discharged 0.008 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Total Group I Polycyclic Aromatic Hydrocarbons
116% over limit
Discharged 0.002162 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
700% over limit
Discharged 0.008 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Copper, total recoverable
29% over limit
Discharged 0.00483 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
350% over limit
Discharged 45 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
71% over limit
Discharged 0.00991 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
165% over limit
Discharged 0.00991 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
230% over limit
Discharged 33 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Copper, total recoverable
130% over limit
Discharged 0.0086 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
49% over limit
Discharged 0.0086 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
320% over limit
Discharged 42 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Copper, total recoverable
18% over limit
Discharged 0.0068 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
1300% over limit
Discharged 0.014 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
82% over limit
Discharged 0.0068 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
1300% over limit
Discharged 0.014 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
520% over limit
Discharged 62 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
77% over limit
Discharged 0.01025 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
174% over limit
Discharged 0.01025 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nickel, total recoverable
46% over limit
Discharged 0.01194 mg/L against a permitted limit of 0.0082 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Total Group I Polycyclic Aromatic Hydrocarbons
100% over limit
Discharged 0.002 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
260% over limit
Discharged 36 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Total Group I Polycyclic Aromatic Hydrocarbons
100% over limit
Discharged 0.002 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
2% over limit
Discharged 0.00381 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Total Group I Polycyclic Aromatic Hydrocarbons
100% over limit
Discharged 0.002 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
227% over limit
Discharged 0.01222 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
112% over limit
Discharged 0.01228 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Total Group I Polycyclic Aromatic Hydrocarbons
100% over limit
Discharged 0.002 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
36% over limit
Discharged 0.00508 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Copper, total recoverable
49% over limit
Discharged 0.00863 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
131% over limit
Discharged 0.00863 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Total Group I Polycyclic Aromatic Hydrocarbons
100% over limit
Discharged 0.002 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
2114% over limit
Discharged 0.0827 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
1330% over limit
Discharged 0.0827 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Total Group I Polycyclic Aromatic Hydrocarbons
100% over limit
Discharged 0.002 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2024
Copper, total recoverable
435% over limit
Discharged 0.01997 mg/L against a permitted limit of 0.00373494 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
245% over limit
Discharged 0.01997 mg/L against a permitted limit of 0.00578313 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, total [as CN]
400% over limit
Discharged 0.005 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)