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Federal facility (Water Supply), Blackstone, Virginia. NPDES permit VA0091766, in force until Nov 30, 2030. Last 12 months: no values over a limit, 20 of 60 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | minimum | ≥ 5 mg/L | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | 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 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 001 |
| Copper, dissolved [as Cu] | monthly average | report only (ug/L) | all year | 001 |
| Copper, dissolved [as Cu] | daily maximum | report only (ug/L) | all year | 001 |
| Petrol hydrocarbons, total recoverable | monthly average | report only (mg/L) | all year | 001 |
| Petrol hydrocarbons, total recoverable | 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 | maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | monthly average | ≤ 16 ug/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 16 ug/L | all year | 001 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 001 |
| Oxygen, dissolved [DO] | minimum | ≥ 5 mg/L | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | 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 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 002 |
| Copper, dissolved [as Cu] | monthly average | report only (ug/L) | all year | 002 |
| Copper, dissolved [as Cu] | daily maximum | report only (ug/L) | all year | 002 |
| Petrol hydrocarbons, total recoverable | monthly average | report only (mg/L) | all year | 002 |
| Petrol hydrocarbons, total recoverable | daily maximum | report only (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 | maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | monthly average | ≤ 16 ug/L | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ 16 ug/L | all year | 002 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 002 |
| Oxygen, dissolved [DO] | minimum | ≥ 5 mg/L | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 003 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 003 |
| Copper, dissolved [as Cu] | monthly average | report only (ug/L) | all year | 003 |
| Copper, dissolved [as Cu] | daily maximum | report only (ug/L) | all year | 003 |
| Petrol hydrocarbons, total recoverable | monthly average | report only (mg/L) | all year | 003 |
| Petrol hydrocarbons, total recoverable | daily maximum | report only (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 | maximum | report only (MGD) | all year | 003 |
| Chlorine, total residual | monthly average | ≤ 16 ug/L | all year | 003 |
| Chlorine, total residual | daily maximum | ≤ 16 ug/L | all year | 003 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 003 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 003 |
| Oxygen, dissolved [DO] | minimum | ≥ 5 mg/L | all year | 004 |
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | 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 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 004 |
| Copper, dissolved [as Cu] | monthly average | report only (ug/L) | all year | 004 |
| Copper, dissolved [as Cu] | daily maximum | report only (ug/L) | all year | 004 |
| Petrol hydrocarbons, total recoverable | monthly average | report only (mg/L) | all year | 004 |
| Petrol hydrocarbons, total recoverable | daily maximum | report only (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 | maximum | report only (MGD) | all year | 004 |
| Chlorine, total residual | monthly average | ≤ 16 ug/L | all year | 004 |
| Chlorine, total residual | daily maximum | ≤ 16 ug/L | all year | 004 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 004 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 004 |
| Oxygen, dissolved [DO] | minimum | ≥ 5 mg/L | all year | 005 |
| pH | minimum | ≥ 6 SU | all year | 005 |
| pH | maximum | ≤ 9 SU | all year | 005 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 005 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 005 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 005 |
| Copper, dissolved [as Cu] | monthly average | report only (ug/L) | all year | 005 |
| Copper, dissolved [as Cu] | daily maximum | report only (ug/L) | all year | 005 |
| Petrol hydrocarbons, total recoverable | monthly average | report only (mg/L) | all year | 005 |
| Petrol hydrocarbons, total recoverable | daily maximum | report only (mg/L) | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | maximum | report only (MGD) | all year | 005 |
| Chlorine, total residual | monthly average | ≤ 16 ug/L | all year | 005 |
| Chlorine, total residual | daily maximum | ≤ 16 ug/L | all year | 005 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 005 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 005 |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Copper, total recoverable, daily maximum outfall 001 | 6.2 ug/L | new | — | — |
| Copper, total recoverable, monthly average outfall 001 | 6.2 ug/L | new | — | — |
| Copper, total recoverable, daily maximum outfall 002 | 6.2 ug/L | new | — | — |
| Copper, total recoverable, monthly average outfall 002 | 6.2 ug/L | new | — | — |
| Copper, total recoverable, daily maximum outfall 003 | 6.2 ug/L | new | — | — |
| Copper, total recoverable, monthly average outfall 003 | 6.2 ug/L | new | — | — |
| Copper, total recoverable, daily maximum outfall 004 | 6.2 ug/L | new | — | — |
| Copper, total recoverable, monthly average outfall 004 | 6.2 ug/L | new | — | — |
| Copper, total recoverable, daily maximum outfall 005 | 6.2 ug/L | new | — | — |
| Copper, total recoverable, monthly average outfall 005 | 6.2 ug/L | new | — | — |
Cited limits by parameter: Virginia's rules and the federal ones.
Same industry: the 24 Water Supply permits in Virginia.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/VA0091766 · MCP: https://passage-data.com/mcp