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Blast Furnaces And Steel Mills, major discharger, Conshohocken, Pennsylvania. NPDES permit PA0050326, in force until Jul 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 110 deg F | all year | 001 |
| Color [PT-CO units] | daily maximum | report only (col unit (pc)) | all year | 001 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 001 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 225.5 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 601.4 lb/d | all year | 001 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 001 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 001 |
| Oil & Grease | instantaneous maximum | ≤ 30 mg/L | all year | 001 |
| Oil & Grease | monthly average | report only (lb/d) | all year | 001 |
| Oil & Grease | daily maximum | ≤ 150.5 lb/d | all year | 001 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/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 | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 001 |
| Chlorine, total residual | instantaneous maximum | ≤ 1.2 mg/L | all year | 001 |
| Solids, total dissolved | quarterly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total dissolved | quarterly average | report only (lb/d) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (lb/d) | all year | 001 |
| Solids, total dissolved | quarterly average | ≤ 1000 mg/L | all year | 001 |
| Solids, total dissolved | daily maximum | ≤ 2000 mg/L | all year | 001 |
| Solids, total dissolved | quarterly average | ≤ 10008 lb/d | all year | 001 |
| Solids, total dissolved | daily maximum | ≤ 20016 lb/d | all year | 001 |
| Solids, total dissolved | quarterly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total dissolved | quarterly average | report only (lb/d) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (lb/d) | all year | 001 |
| Bromide [as Br] | daily maximum | report only (mg/L) | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 004 |
| pH | daily maximum | report only (SU) | all year | 004 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 004 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 004 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 004 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 004 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 004 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 004 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 004 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 004 |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year | 004 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 004 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 004 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 004 |
| PCBs Wet Weather Analysis | daily maximum | report only (pg/L) | all year | 004 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 004 |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
Same industry: the 85 Primary Metal Industries permits in Pennsylvania.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/PA0050326 · MCP: https://passage-data.com/mcp