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Water Supply, Pittsburgh, Pennsylvania. NPDES permit PA0218961, in force until Oct 31, 2029. Last 12 months: over a limit 13 times (last June 2026), 254 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| December 2025 | 030 | Chlorine, total residual, daily maximum | 1.05 mg/L | ≤ 1 mg/L | 5% |
| December 2025 | 030 | Chlorine, total residual, quarterly average | 1.05 mg/L | ≤ .5 mg/L | 110% |
| December 2025 | 114 | Chlorine, total residual, daily maximum | 1.59 mg/L | ≤ 1 mg/L | 59% |
| December 2025 | 114 | Iron, total [as Fe], daily maximum | 9.7 mg/L | ≤ 4 mg/L | 143% |
| December 2025 | 114 | Iron, total [as Fe], monthly average | 5.16 mg/L | ≤ 2 mg/L | 158% |
| December 2025 | 114 | Manganese, total [as Mn], daily maximum | 3.43 mg/L | ≤ 2 mg/L | 72% |
| December 2025 | 114 | Manganese, total [as Mn], monthly average | 1.74 mg/L | ≤ 1 mg/L | 74% |
| December 2025 | 114 | Solids, total suspended, daily maximum | 204 mg/L | ≤ 60 mg/L | 240% |
| December 2025 | 114 | Solids, total suspended, monthly average | 104.5 mg/L | ≤ 30 mg/L | 248% |
| May 2026 | 007 | Chlorine, total residual, daily maximum | 1.24 mg/L | ≤ 1 mg/L | 24% |
| May 2026 | 007 | Chlorine, total residual, monthly average | 1.23 mg/L | ≤ .5 mg/L | 146% |
| June 2026 | 028 | Chlorine, total residual, daily maximum | 2.6 mg/L | ≤ 1 mg/L | 160% |
| June 2026 | 028 | Chlorine, total residual, quarterly average | .71 mg/L | ≤ .5 mg/L | 42% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6 SU | all year | 007 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 007 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 007 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 007 |
| Copper, total [as Cu] | monthly average | report only (mg/L) | all year | 007 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 007 |
| Iron, total [as Fe] | monthly average | ≤ 2 mg/L | all year | 007 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year | 007 |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year | 007 |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | 007 |
| Aluminum, total [as Al] | monthly average | ≤ 4 mg/L | all year | 007 |
| Aluminum, total [as Al] | daily maximum | ≤ 8 mg/L | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 007 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 007 |
| 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 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 008 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 008 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 009 |
| 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 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 013 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 013 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 014 |
| pH | daily maximum | report only (SU) | all year | 014 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 014 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 014 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 014 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 014 |
| pH | daily minimum | ≥ 6 SU | all year | 015 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 015 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 015 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 015 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 015 |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year | 015 |
| Iron, total [as Fe] | monthly average | ≤ 2 mg/L | all year | 015 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year | 015 |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year | 015 |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | 015 |
| Aluminum, total [as Al] | monthly average | ≤ 4 mg/L | all year | 015 |
| Aluminum, total [as Al] | daily maximum | ≤ 8 mg/L | all year | 015 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 015 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 015 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 015 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 015 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 016 |
| pH | daily maximum | report only (SU) | all year | 016 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 016 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 016 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 016 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 016 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 017 |
| pH | daily maximum | report only (SU) | all year | 017 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 017 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 017 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 017 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 017 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 018 |
| pH | daily maximum | report only (SU) | all year | 018 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 018 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 018 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 018 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 018 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 019 |
| pH | daily minimum | ≥ 6 SU | all year | 019 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 019 |
| Solids, total suspended | quarterly average | ≤ 30 mg/L | all year | 019 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 019 |
| Oil & Grease | quarterly average | ≤ 15 mg/L | all year | 019 |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year | 019 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 019 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 019 |
| Iron, total [as Fe] | quarterly average | ≤ 2 mg/L | all year | 019 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year | 019 |
| Manganese, total [as Mn] | quarterly average | ≤ 1 mg/L | all year | 019 |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | 019 |
| Aluminum, total [as Al] | quarterly average | ≤ 4 mg/L | all year | 019 |
| Aluminum, total [as Al] | daily maximum | ≤ 8 mg/L | all year | 019 |
| Flow, in conduit or thru treatment plant | quarterly average | report only (MGD) | all year | 019 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 019 |
| Chlorine, total residual | quarterly average | ≤ .5 mg/L | all year | 019 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 019 |
| pH | daily minimum | ≥ 6 SU | all year | 023 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 023 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 023 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 023 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 023 |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year | 023 |
| Iron, total [as Fe] | monthly average | ≤ 2 mg/L | all year | 023 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year | 023 |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year | 023 |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | 023 |
| Aluminum, total [as Al] | monthly average | ≤ 4 mg/L | all year | 023 |
| Aluminum, total [as Al] | daily maximum | ≤ 8 mg/L | all year | 023 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 023 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 023 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 023 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 023 |
| pH | daily minimum | ≥ 6 SU | all year | 025 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 025 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 025 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 025 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 025 |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year | 025 |
| Iron, total [as Fe] | monthly average | ≤ 2 mg/L | all year | 025 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year | 025 |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year | 025 |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | 025 |
| Aluminum, total [as Al] | monthly average | ≤ 4 mg/L | all year | 025 |
| Aluminum, total [as Al] | daily maximum | ≤ 8 mg/L | all year | 025 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 025 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 025 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 025 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 025 |
| Mercury, total [as Hg] | monthly average | report only (mg/L) | all year | 025 |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | 025 |
| Flow, in conduit or thru treatment plant | quarterly average | report only (MGD) | all year | 026 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 026 |
| Chlorine, total residual | quarterly average | ≤ .5 mg/L | all year | 026 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 026 |
| Flow, in conduit or thru treatment plant | quarterly average | report only (MGD) | all year | 027 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 027 |
| Chlorine, total residual | quarterly average | ≤ .5 mg/L | all year | 027 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 027 |
| Flow, in conduit or thru treatment plant | quarterly average | report only (gal/min) | all year | 028 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 2670 gal/min | all year | 028 |
| Chlorine, total residual | quarterly average | ≤ .5 mg/L | all year | 028 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 028 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 029 |
| pH | daily maximum | report only (SU) | all year | 029 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 029 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 029 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 029 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 029 |
| Flow, in conduit or thru treatment plant | quarterly average | report only (MGD) | all year | 029 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 029 |
| Chlorine, total residual | quarterly average | ≤ .5 mg/L | all year | 029 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 029 |
| Flow, in conduit or thru treatment plant | quarterly average | report only (MGD) | all year | 030 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 030 |
| Chlorine, total residual | quarterly average | ≤ .5 mg/L | all year | 030 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 030 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 031 |
| pH | daily maximum | report only (SU) | all year | 031 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 031 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 031 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 031 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 031 |
| pH | daily minimum | ≥ 6 SU | all year | 099 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 099 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 099 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 099 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 099 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 099 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 099 |
| pH | daily minimum | ≥ 6 SU | all year | 108 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 108 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 108 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 108 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 108 |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year | 108 |
| Iron, total [as Fe] | monthly average | ≤ 2 mg/L | all year | 108 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year | 108 |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year | 108 |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | 108 |
| Aluminum, total [as Al] | monthly average | ≤ 4 mg/L | all year | 108 |
| Aluminum, total [as Al] | daily maximum | ≤ 8 mg/L | all year | 108 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 108 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 108 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 108 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 108 |
| pH | daily minimum | ≥ 6 SU | all year | 114 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 114 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 114 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 114 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 114 |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year | 114 |
| Copper, total [as Cu] | monthly average | report only (mg/L) | all year | 114 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 114 |
| Iron, total [as Fe] | monthly average | ≤ 2 mg/L | all year | 114 |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year | 114 |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year | 114 |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | 114 |
| Aluminum, total [as Al] | monthly average | ≤ 4 mg/L | all year | 114 |
| Aluminum, total [as Al] | daily maximum | ≤ 8 mg/L | all year | 114 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 114 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 114 |
| Chlorine, total residual | monthly average | ≤ .5 mg/L | all year | 114 |
| Chlorine, total residual | daily maximum | ≤ 1 mg/L | all year | 114 |
Cited limits by parameter: Pennsylvania's rules and the federal ones.
Same industry: the 214 Water Supply permits in Pennsylvania.
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On EPA ECHO: Facility report · DMR history
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