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Secondary Nonferrous Metals, major discharger, Boss, Missouri. NPDES permit MO0000337 expired Mar 31, 2024; its limits still apply. Last 12 months: over a limit 6 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| March 2026 | 002 | Toxicity [acute], Pimephales promelas [Fathead Minnow], value | 1.12 | ≤ 1 toxic | 12% |
| March 2026 | 003 | Toxicity [acute], Ceriodaphnia dubia, value | > 16 | ≤ 1 toxic | — |
| July 2026 | 003 | Toxicity [acute], Ceriodaphnia dubia, value | > 16 | ≤ 1 toxic | — |
| July 2026 | 003 | Toxicity [acute], Pimephales promelas [Fathead Minnow], value | 1.26 | ≤ 1 toxic | 26% |
| August 2026 | 003 | Toxicity [acute], Ceriodaphnia dubia, value | > 16 | ≤ 1 toxic | — |
| August 2026 | 003 | Toxicity [acute], Pimephales promelas [Fathead Minnow], value | 2.67 | ≤ 1 toxic | 167% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | report only (SU) | all year | 002 |
| pH | minimum | report only (SU) | all year | 002 |
| pH | maximum | report only (SU) | all year | 002 |
| pH | maximum | report only (SU) | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 002 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 002 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 002 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 002 |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Arsenic, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Arsenic, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Iron, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Iron, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Iron, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Iron, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Selenium, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Selenium, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Antimony, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Antimony, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Antimony, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Antimony, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Chloride | daily maximum | report only (mg/L) | all year | 002 |
| Chloride | daily maximum | report only (mg/L) | all year | 002 |
| Chloride | monthly average | report only (mg/L) | all year | 002 |
| Chloride | monthly average | report only (mg/L) | all year | 002 |
| Rainfall | daily maximum | report only (in) | all year | 002 |
| Rainfall | monthly average | report only (in) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | 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 | monthly average | report only (MGD) | all year | 002 |
| Toxicity [acute], Ceriodaphnia dubia | value | ≤ 1 toxic | all year | 002 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | value | ≤ 1 toxic | all year | 002 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | all year | 002 |
| Depth to water level ft below landsurface | monthly average | report only (ft) | all year | 002 |
| Chlorides + Sulfates | daily maximum | report only (mg/L) | all year | 002 |
| Chlorides + Sulfates | daily maximum | report only (mg/L) | all year | 002 |
| Chlorides + Sulfates | monthly average | report only (mg/L) | all year | 002 |
| Chlorides + Sulfates | monthly average | report only (mg/L) | all year | 002 |
| pH | minimum | report only (SU) | all year | 003 |
| pH | minimum | report only (SU) | all year | 003 |
| pH | maximum | report only (SU) | all year | 003 |
| pH | maximum | report only (SU) | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 003 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 003 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 003 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 003 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 003 |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Arsenic, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Arsenic, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Iron, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Iron, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Iron, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Iron, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Selenium, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Selenium, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Antimony, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Antimony, total recoverable | daily maximum | report only (ug/L) | all year | 003 |
| Antimony, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Antimony, total recoverable | monthly average | report only (ug/L) | all year | 003 |
| Chloride | daily maximum | report only (mg/L) | all year | 003 |
| Chloride | daily maximum | report only (mg/L) | all year | 003 |
| Chloride | monthly average | report only (mg/L) | all year | 003 |
| Chloride | monthly average | report only (mg/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Toxicity [acute], Ceriodaphnia dubia | value | ≤ 1 toxic | all year | 003 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | value | ≤ 1 toxic | all year | 003 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | all year | 003 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | all year | 003 |
| Depth to water level ft below landsurface | monthly average | report only (ft) | all year | 003 |
| Depth to water level ft below landsurface | monthly average | report only (ft) | all year | 003 |
| Chlorides + Sulfates | daily maximum | report only (mg/L) | all year | 003 |
| Chlorides + Sulfates | daily maximum | report only (mg/L) | all year | 003 |
| Chlorides + Sulfates | monthly average | report only (mg/L) | all year | 003 |
| Chlorides + Sulfates | monthly average | report only (mg/L) | all year | 003 |
Cited limits by parameter: Missouri's rules and the federal ones.
Same industry: the 5 Primary Metal Industries permits in Missouri.
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Your permit document is the final word. As JSON: /api/v1/permits/MO0000337 · MCP: https://passage-data.com/mcp