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Water Supply, major discharger, Johnstown, Pennsylvania. NPDES permit PA0253359, in force until Jun 30, 2030. Last 12 months: over a limit 2 times (last June 2026), 86 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| June 2026 | Copper, total [as Cu], daily maximum | 400 ug/L | ≤ 11.4 ug/L | 3409% |
| June 2026 | Copper, total [as Cu], monthly average | 239.8 ug/L | ≤ 9 ug/L | 2564% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| 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 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 001 |
| Iron, total [as Fe] | monthly average | ≤ 1.5 mg/L | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ 3 mg/L | all year | 001 |
| Iron, total [as Fe] | monthly average | report only (lb/d) | all year | 001 |
| Iron, total [as Fe] | daily maximum | report only (lb/d) | all year | 001 |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year | 001 |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | 001 |
| Manganese, total [as Mn] | monthly average | report only (lb/d) | all year | 001 |
| Manganese, total [as Mn] | daily maximum | report only (lb/d) | all year | 001 |
| Zinc, total [as Zn] | monthly average | report only (ug/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 001 |
| Aluminum, total [as Al] | monthly average | ≤ .75 mg/L | all year | 001 |
| Aluminum, total [as Al] | daily maximum | ≤ .75 mg/L | all year | 001 |
| Aluminum, total [as Al] | monthly average | report only (lb/d) | all year | 001 |
| Aluminum, total [as Al] | daily maximum | report only (lb/d) | 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 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 002 |
| Iron, total [as Fe] | monthly average | ≤ 1.5 mg/L | all year | 002 |
| Iron, total [as Fe] | daily maximum | ≤ 3 mg/L | all year | 002 |
| Iron, total [as Fe] | monthly average | report only (lb/d) | all year | 002 |
| Iron, total [as Fe] | daily maximum | report only (lb/d) | all year | 002 |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year | 002 |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | 002 |
| Manganese, total [as Mn] | monthly average | report only (lb/d) | all year | 002 |
| Manganese, total [as Mn] | daily maximum | report only (lb/d) | all year | 002 |
| Aluminum, total [as Al] | monthly average | ≤ .75 mg/L | all year | 002 |
| Aluminum, total [as Al] | daily maximum | ≤ .75 mg/L | all year | 002 |
| Aluminum, total [as Al] | monthly average | report only (lb/d) | all year | 002 |
| Aluminum, total [as Al] | daily maximum | report only (lb/d) | 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 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 003 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | quarterly average | ≤ 30 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 003 |
| Copper, total [as Cu] | monthly average | ≤ 9 ug/L | all year | 003 |
| Copper, total [as Cu] | daily maximum | ≤ 11.4 ug/L | all year | 003 |
| Iron, total [as Fe] | quarterly average | ≤ 1.5 mg/L | all year | 003 |
| Iron, total [as Fe] | daily maximum | ≤ 3 mg/L | all year | 003 |
| Manganese, total [as Mn] | quarterly average | ≤ 1 mg/L | all year | 003 |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | 003 |
| Aluminum, total [as Al] | quarterly average | ≤ .75 mg/L | all year | 003 |
| Aluminum, total [as Al] | daily maximum | ≤ .75 mg/L | 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 | daily maximum | report only (MGD) | all year | 003 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 101 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 110 deg F | all year | 101 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 101 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 101 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 101 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 101 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 101 |
| Oil & Grease | instantaneous maximum | ≤ 30 mg/L | all year | 101 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 101 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 101 |
| Iron, total [as Fe] | monthly average | report only (mg/L) | all year | 101 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 101 |
| Iron, total [as Fe] | monthly average | report only (lb/d) | all year | 101 |
| Iron, total [as Fe] | daily maximum | report only (lb/d) | all year | 101 |
| Manganese, total [as Mn] | monthly average | report only (mg/L) | all year | 101 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 101 |
| Manganese, total [as Mn] | monthly average | report only (lb/d) | all year | 101 |
| Manganese, total [as Mn] | daily maximum | report only (lb/d) | all year | 101 |
| Aluminum, total [as Al] | monthly average | report only (mg/L) | all year | 101 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 101 |
| Aluminum, total [as Al] | monthly average | report only (lb/d) | all year | 101 |
| Aluminum, total [as Al] | daily maximum | report only (lb/d) | all year | 101 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 101 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 101 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 101 |
| Chlorine, total residual | instantaneous maximum | ≤ 1.6 mg/L | all year | 101 |
| Chlorine, free available | monthly average | report only (mg/L) | all year | 101 |
| Chlorine, free available | daily maximum | report only (mg/L) | all year | 101 |
| Chlorine, free available | monthly average | ≤ 1.69 lb/d | all year | 101 |
| Chlorine, free available | daily maximum | ≤ 4.23 lb/d | all year | 101 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | 101 |
| Perfluorooctanesulfonate | daily maximum | report only (ng/L) | all year | 101 |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | 101 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year | 101 |
| pH | instantaneous minimum | report only (SU) | all year | 201 |
| pH | instantaneous maximum | report only (SU) | all year | 201 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 201 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 201 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 201 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 201 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 201 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 201 |
| pH | instantaneous minimum | report only (SU) | all year | 301 |
| pH | instantaneous maximum | report only (SU) | all year | 301 |
| Chromium, total [as Cr] | quarterly average | ≤ .2 mg/L | all year | 301 |
| Chromium, total [as Cr] | daily maximum | ≤ .2 mg/L | all year | 301 |
| Zinc, total [as Zn] | quarterly average | ≤ 1 mg/L | all year | 301 |
| Zinc, total [as Zn] | daily maximum | ≤ 1 mg/L | all year | 301 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 301 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 301 |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
Same industry: the 214 Water Supply permits in Pennsylvania.
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