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Water Supply, Ashland, Ohio. NPDES permit OH0008991, in force until May 31, 2030. Last 12 months: over a limit 2 times (last September 2026), 4 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| September 2026 | Solids, total suspended, daily maximum | 60 | ≤ 45 mg/L | 33% |
| September 2026 | Solids, total suspended, monthly average | 57 | ≤ 30 mg/L | 90% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 10 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 45 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 | ≤ .019 mg/L | all year | 001 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 001 |
| Trihalomethane, tot. | monthly average | report only (ug/L) | Sep | 001 |
| Trihalomethane, tot. | daily maximum | report only (ug/L) | Sep | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | ≤ 10 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 45 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 | daily maximum | ≤ .019 mg/L | all year | 002 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 002 |
| Trihalomethane, tot. | monthly average | report only (ug/L) | Sep | 002 |
| Trihalomethane, tot. | daily maximum | report only (ug/L) | Sep | 002 |
| pH | daily minimum | ≥ 6.5 SU | all year | 003 |
| pH | daily maximum | ≤ 10 SU | all year | 003 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 45 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 |
| Chlorine, total residual | daily maximum | ≤ .019 mg/L | all year | 003 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | 003 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 003 |
| Trihalomethane, tot. | monthly average | report only (ug/L) | Sep | 003 |
| Trihalomethane, tot. | daily maximum | report only (ug/L) | Sep | 003 |
Cited limits by parameter: Ohio's rules and the federal ones.
Same industry: the 147 Water Supply permits in Ohio.
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