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Copper Ores, major discharger, Superior, Arizona. NPDES permit AZ0020389 expired Jan 22, 2022; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Cyanide, total [as CN] | monthly average | ≤ 7.9 ug/L | all year | 001 |
| Cyanide, total [as CN] | daily maximum | ≤ 16 ug/L | all year | 001 |
| Sulfide, total [as S] | monthly average | report only (ug/L) | all year | 001 |
| Sulfide, total [as S] | daily maximum | report only (ug/L) | all year | 001 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, total recoverable | monthly average | ≤ 80 ug/L | all year | 001 |
| Arsenic, total recoverable | daily maximum | ≤ 120 ug/L | all year | 001 |
| Iron, total recoverable | monthly average | ≤ 820 ug/L | all year | 001 |
| Iron, total recoverable | daily maximum | ≤ 1640 ug/L | all year | 001 |
| Selenium, total recoverable | monthly average | ≤ 2 ug/L | all year | 001 |
| Selenium, total recoverable | daily maximum | ≤ 3 ug/L | all year | 001 |
| Thallium, total recoverable | monthly average | ≤ 7.2 ug/L | all year | 001 |
| Thallium, total recoverable | daily maximum | ≤ 11 ug/L | all year | 001 |
| Beryllium, total recoverable [as Be] | monthly average | ≤ 4.3 ug/L | all year | 001 |
| Beryllium, total recoverable [as Be] | daily maximum | ≤ 8.7 ug/L | all year | 001 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 001 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 001 |
| Nickel, total recoverable | monthly average | ≤ 52.5 ug/L | all year | 001 |
| Nickel, total recoverable | daily maximum | ≤ 105 ug/L | all year | 001 |
| Silver total recoverable | monthly average | ≤ 2.5 ug/L | all year | 001 |
| Silver total recoverable | daily maximum | ≤ 4.9 ug/L | all year | 001 |
| Zinc, total recoverable | monthly average | ≤ 72 ug/L | all year | 001 |
| Zinc, total recoverable | daily maximum | ≤ 144 ug/L | all year | 001 |
| Cadmium, total recoverable | monthly average | ≤ 2.2 ug/L | all year | 001 |
| Cadmium, total recoverable | daily maximum | ≤ 4.4 ug/L | all year | 001 |
| Lead, total recoverable | monthly average | ≤ 2.7 ug/L | all year | 001 |
| Lead, total recoverable | daily maximum | ≤ 5.4 ug/L | all year | 001 |
| Copper, total recoverable | monthly average | ≤ 8.5 ug/L | all year | 001 |
| Copper, total recoverable | daily maximum | ≤ 17 ug/L | all year | 001 |
| Chromium, hexavalent dissolved [as Cr] | monthly average | ≤ 7.9 ug/L | all year | 001 |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | ≤ 16 ug/L | all year | 001 |
| Antimony, total recoverable | monthly average | ≤ 25 ug/L | all year | 001 |
| Antimony, total recoverable | daily maximum | ≤ 49 ug/L | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | weekly average | report only (MGD) | all year | 001 |
| Hydrogen sulfide | monthly average | ≤ 2 ug/L | all year | 001 |
| Hydrogen sulfide | daily maximum | ≤ 3 ug/L | all year | 001 |
| Mercury, total recoverable | monthly average | ≤ .01 ug/L | all year | 001 |
| Mercury, total recoverable | daily maximum | ≤ .02 ug/L | all year | 001 |
| Pass/Fail Static 96Hr Acute Ceriodaphnia Dubia | monthly median | report only (pass=0;fail=1) | all year | 001 |
| Pass/Fail Static 96 Hr Acute Pimephales Promelas | monthly median | report only (pass=0;fail=1) | all year | 001 |
| TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum) | monthly median | report only (tox chronic) | all year | 001 |
| TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum) | daily maximum | report only (tox chronic) | all year | 001 |
| Static 7Day Chronic Pimephales Promelas | monthly median | report only (tox chronic) | all year | 001 |
| Static 7Day Chronic Pimephales Promelas | daily maximum | report only (tox chronic) | all year | 001 |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | monthly median | report only (tox chronic) | all year | 001 |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | daily maximum | report only (tox chronic) | all year | 001 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 002 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 002 |
| Cyanide, total [as CN] | monthly average | report only (ug/L) | all year | 002 |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year | 002 |
| Sulfide, total [as S] | monthly average | report only (ug/L) | all year | 002 |
| Sulfide, total [as S] | daily maximum | report only (ug/L) | all year | 002 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 002 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 002 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Iron, total recoverable | monthly average | ≤ 820 ug/L | all year | 002 |
| Iron, total recoverable | daily maximum | ≤ 1640 ug/L | all year | 002 |
| Selenium, total recoverable | monthly average | ≤ 2 ug/L | all year | 002 |
| Selenium, total recoverable | daily maximum | ≤ 3 ug/L | all year | 002 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 002 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 002 |
| Silver total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Silver total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Zinc, total recoverable | monthly average | ≤ 72 ug/L | all year | 002 |
| Zinc, total recoverable | daily maximum | ≤ 144 ug/L | all year | 002 |
| Cadmium, total recoverable | monthly average | ≤ 50 ug/L | all year | 002 |
| Cadmium, total recoverable | daily maximum | ≤ 100 ug/L | all year | 002 |
| Lead, total recoverable | monthly average | ≤ 2.7 ug/L | all year | 002 |
| Lead, total recoverable | daily maximum | ≤ 5.4 ug/L | all year | 002 |
| Copper, total recoverable | monthly average | ≤ 8.5 ug/L | all year | 002 |
| Copper, total recoverable | daily maximum | ≤ 17 ug/L | all year | 002 |
| Chromium, hexavalent dissolved [as Cr] | monthly average | report only (ug/L) | all year | 002 |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 002 |
| Hydrogen sulfide | monthly average | report only (ug/L) | all year | 002 |
| Hydrogen sulfide | daily maximum | report only (ug/L) | all year | 002 |
| Mercury, total recoverable | monthly average | ≤ 1 ug/L | all year | 002 |
| Mercury, total recoverable | daily maximum | ≤ 2 ug/L | all year | 002 |
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | monthly median | report only (pass=0;fail=1) | all year | 002 |
| Pass/Fail Static 96 Hr Acute Pimephales Promelas | monthly median | report only (pass=0;fail=1) | all year | 002 |
| TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum) | monthly median | report only (tox chronic) | all year | 002 |
| TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum) | daily maximum | report only (tox chronic) | all year | 002 |
| Static 7Day Chronic Pimephales Promelas | monthly median | report only (tox chronic) | all year | 002 |
| Static 7Day Chronic Pimephales Promelas | daily maximum | report only (tox chronic) | all year | 002 |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | monthly median | report only (tox chronic) | all year | 002 |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | daily maximum | report only (tox chronic) | all year | 002 |
Cited limits by parameter: Arizona's rules and the federal ones.
Same industry: the 8 Metal Mining permits in Arizona.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/AZ0020389 · MCP: https://passage-data.com/mcp