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Sewerage Systems, Columbus, Ohio. NPDES permit OH0105864, in force until Aug 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. centigrade | monthly average | report only (deg C) | Mar, Jun, Aug, Dec |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Mar, Jun, Aug, Dec |
| Flow rate | monthly average | report only (gal/d) | Mar, Jun, Aug, Dec |
| Flow rate | daily maximum | report only (gal/d) | Mar, Jun, Aug, Dec |
| pH | daily minimum | ≥ 6.5 SU | Mar, Jun, Aug, Dec |
| pH | daily maximum | ≤ 9 SU | Mar, Jun, Aug, Dec |
| Solids, total suspended | monthly average | ≤ 12 mg/L | Mar, Jun, Aug, Dec |
| Solids, total suspended | weekly maximum | ≤ 18 mg/L | Mar, Jun, Aug, Dec |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec |
| Surfactants [MBAS] | daily maximum | ≤ .5 mg/L | Mar, Jun, Aug, Dec |
| Chlorine, total residual | daily maximum | ≤ .019 mg/L | Mar, Jun, Aug, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec |
Cited limits by parameter: Ohio's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/OH0105864 · MCP: https://passage-data.com/mcp