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Water Supply, Pittsburgh, Pennsylvania. NPDES permit PA0217689, in force until Jan 31, 2030. Last 12 months: over a limit 27 times (last June 2026), 58 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| October 2025 | 004 | Manganese, total [as Mn], daily maximum | 5.7 mg/L | ≤ 2 mg/L | 185% |
| October 2025 | 004 | Manganese, total [as Mn], monthly average | 5.6 mg/L | ≤ 1 mg/L | 460% |
| October 2025 | 011 | Mercury, total [as Hg], daily maximum | .025 ug/L | ≤ .019 ug/L | 32% |
| October 2025 | 011 | Mercury, total [as Hg], monthly average | .022 ug/L | ≤ .012 ug/L | 83% |
| November 2025 | 004 | Manganese, total [as Mn], daily maximum | 5.6 mg/L | ≤ 2 mg/L | 180% |
| November 2025 | 004 | Manganese, total [as Mn], monthly average | 4.2 mg/L | ≤ 1 mg/L | 320% |
| November 2025 | 011 | Mercury, total [as Hg], daily maximum | .033 ug/L | ≤ .019 ug/L | 74% |
| November 2025 | 011 | Mercury, total [as Hg], monthly average | .021 ug/L | ≤ .012 ug/L | 75% |
| December 2025 | 004 | Manganese, total [as Mn], daily maximum | 2.1 mg/L | ≤ 2 mg/L | 5% |
| December 2025 | 004 | Manganese, total [as Mn], monthly average | 1.7 mg/L | ≤ 1 mg/L | 70% |
| December 2025 | 011 | Mercury, total [as Hg], daily maximum | .021 ug/L | ≤ .019 ug/L | 11% |
| December 2025 | 011 | Mercury, total [as Hg], monthly average | .013 ug/L | ≤ .012 ug/L | 8% |
| January 2026 | 004 | Manganese, total [as Mn], daily maximum | 2.64 mg/L | ≤ 2 mg/L | 32% |
| January 2026 | 004 | Manganese, total [as Mn], monthly average | 2.59 mg/L | ≤ 1 mg/L | 159% |
| January 2026 | 011 | Mercury, total [as Hg], monthly average | .0145 ug/L | ≤ .012 ug/L | 21% |
| February 2026 | 004 | Manganese, total [as Mn], daily maximum | 4.98 mg/L | ≤ 2 mg/L | 149% |
| February 2026 | 004 | Manganese, total [as Mn], monthly average | 4.22 mg/L | ≤ 1 mg/L | 322% |
| March 2026 | 004 | Manganese, total [as Mn], daily maximum | 4.24 mg/L | ≤ 2 mg/L | 112% |
| March 2026 | 004 | Manganese, total [as Mn], monthly average | 3.64 mg/L | ≤ 1 mg/L | 264% |
| April 2026 | 004 | Manganese, total [as Mn], daily maximum | 5.79 mg/L | ≤ 2 mg/L | 190% |
| April 2026 | 004 | Manganese, total [as Mn], monthly average | 5.17 mg/L | ≤ 1 mg/L | 417% |
| May 2026 | 004 | Manganese, total [as Mn], daily maximum | 14.5 mg/L | ≤ 2 mg/L | 625% |
| May 2026 | 004 | Manganese, total [as Mn], monthly average | 14.35 mg/L | ≤ 1 mg/L | 1335% |
| May 2026 | 011 | Mercury, total [as Hg], daily maximum | .331 ug/L | ≤ .019 ug/L | 1642% |
| May 2026 | 011 | Mercury, total [as Hg], monthly average | .199 ug/L | ≤ .012 ug/L | 1558% |
| June 2026 | 004 | Aluminum, total [as Al], daily maximum | 20.7 mg/L | ≤ 8 mg/L | 159% |
| June 2026 | 004 | Aluminum, total [as Al], monthly average | 15.5 mg/L | ≤ 4 mg/L | 288% |
| 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 |
| Iron, total [as Fe] | monthly average | ≤ 2 mg/L | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | 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 |
| Aluminum, total [as Al] | monthly average | ≤ 4 mg/L | all year | 001 |
| Aluminum, total [as Al] | daily maximum | ≤ 8 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 | daily maximum | ≤ 1 mg/L | all year | 001 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | 001 |
| Perfluorooctanesulfonate | daily maximum | report only (ng/L) | all year | 001 |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | 001 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | 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 | ≤ 2 mg/L | all year | 002 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | 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 |
| Aluminum, total [as Al] | monthly average | ≤ 4 mg/L | all year | 002 |
| Aluminum, total [as Al] | daily maximum | ≤ 8 mg/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 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 002 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | 002 |
| Perfluorooctanesulfonate | daily maximum | report only (ng/L) | all year | 002 |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | 002 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 003 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 003 |
| pH | daily maximum | report only (SU) | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 003 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 003 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 004 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 004 |
| Iron, total [as Fe] | monthly average | ≤ 2 mg/L | all year | 004 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year | 004 |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year | 004 |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | 004 |
| Aluminum, total [as Al] | monthly average | ≤ 4 mg/L | all year | 004 |
| Aluminum, total [as Al] | daily maximum | ≤ 8 mg/L | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 004 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 004 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | 004 |
| Perfluorooctanesulfonate | daily maximum | report only (ng/L) | all year | 004 |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | 004 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year | 004 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 005 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 005 |
| pH | daily maximum | report only (SU) | all year | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 005 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 005 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 005 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 005 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 006 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 006 |
| pH | daily maximum | report only (SU) | all year | 006 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 006 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 006 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 006 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 006 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 006 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 007 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 007 |
| pH | daily maximum | report only (SU) | all year | 007 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 007 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 007 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 007 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 007 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 007 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 008 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 008 |
| pH | daily maximum | report only (SU) | all year | 008 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 008 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 008 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 008 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 008 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 008 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 009 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 009 |
| pH | daily maximum | report only (SU) | all year | 009 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 009 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 009 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 009 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 009 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 009 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 010 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 010 |
| pH | daily maximum | report only (SU) | all year | 010 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 010 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 010 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 010 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 010 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 010 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 011 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 011 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 011 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 011 |
| Iron, total [as Fe] | monthly average | ≤ 2 mg/L | all year | 011 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year | 011 |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year | 011 |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | 011 |
| Aluminum, total [as Al] | monthly average | ≤ 4 mg/L | all year | 011 |
| Aluminum, total [as Al] | daily maximum | ≤ 8 mg/L | all year | 011 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 011 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 011 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 011 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 011 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | 011 |
| Perfluorooctanesulfonate | daily maximum | report only (ng/L) | all year | 011 |
| Perfluorobutanesulfonic acid (PFBS) | daily maximum | report only (ng/L) | all year | 011 |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | daily maximum | report only (ng/L) | all year | 011 |
| Mercury, total [as Hg] | monthly average | ≤ .012 ug/L | all year | 011 |
| Mercury, total [as Hg] | daily maximum | ≤ .019 ug/L | all year | 011 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 012 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 012 |
| pH | daily maximum | report only (SU) | all year | 012 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 012 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 012 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 012 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 012 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 012 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 013 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 013 |
| pH | daily maximum | report only (SU) | all year | 013 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 013 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 013 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 013 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 013 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 013 |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
Same industry: the 214 Water Supply permits in Pennsylvania.
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