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Water Supply, Portsmouth, Ohio. NPDES permit OH0008621, in force until Apr 30, 2031. Last 12 months: no values over a limit, 11 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | 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 | daily maximum | ≤ .038 mg/L | all year | 001 |
| Trihalomethane, tot. | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 001 |
| Trihalomethane, tot. | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 001 |
| pH | daily minimum | report only (SU) | all year | 002 |
| pH | daily maximum | report only (SU) | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | 002 |
| Bypass Volume | monthly average | report only (Mgal) | all year | 002 |
| Bypass Volume | daily maximum | report only (Mgal) | all year | 002 |
| Bypass valve | monthly average | report only (occur/mo) | all year | 002 |
| Bypass valve | daily maximum | report only (occur/mo) | all year | 002 |
| Bypass of treatment | monthly average | report only (hr/mo) | all year | 002 |
| Bypass of treatment | daily maximum | report only (hr/mo) | all year | 002 |
| Trihalomethane, tot. | monthly average | report only (ug/L) | all year | 002 |
| Trihalomethane, tot. | daily maximum | report only (ug/L) | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 800 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 800 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 800 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 800 |
Cited limits by parameter: Ohio's rules and the federal ones.
Same industry: the 147 Water Supply permits in Ohio.
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Your permit document is the final word. As JSON: /api/v1/permits/OH0008621 · MCP: https://passage-data.com/mcp