Passage Data · Check a report · Use it from your AI
Water Supply, Columbus, Ohio. NPDES permit OH0029891, in force until Jul 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 11 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 |
| Nitrogen, nitrate total [as N] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec | 001 |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec | 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 |
| Microcystin | monthly average | report only (ug/L) | May–Oct | 001 |
| Microcystin | daily maximum | report only (ug/L) | May–Oct | 001 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec | 001 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec | 001 |
| Trihalomethane, tot. | monthly average | report only (ug/L) | Sep | 001 |
| Trihalomethane, tot. | daily maximum | report only (ug/L) | Sep | 001 |
| pH | daily minimum | report only (SU) | all year | 011 |
| pH | daily maximum | report only (SU) | all year | 011 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 011 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 011 |
| Nitrogen, nitrate total [as N] | monthly average | report only (mg/L) | all year | 011 |
| Nitrogen, nitrate total [as N] | daily maximum | report only (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 |
| Microcystin | monthly average | report only (ug/L) | May–Oct | 011 |
| Microcystin | daily maximum | report only (ug/L) | May–Oct | 011 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 011 |
| Nitrogen, nitrate total [as N] | monthly average | report only (mg/L) | all year | 801 |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year | 801 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | 801 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 801 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 802 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 802 |
| Nitrogen, nitrate total [as N] | monthly average | report only (mg/L) | all year | 901 |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year | 901 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | 901 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 901 |
Cited limits by parameter: Ohio's rules and the federal ones.
Same industry: the 147 Water Supply permits in Ohio.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/OH0029891 · MCP: https://passage-data.com/mcp