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Sewage treatment plant, Edisto Beach, South Carolina. NPDES permit SC0049336 expired Jan 31, 2023; its limits still apply. Last 12 months: no values over a limit, 1 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year |
| pH | monthly average | report only (SU) | all year |
| pH | daily maximum | report only (SU) | all year |
| Salinity | monthly average | report only (ppk) | all year |
| Salinity | daily maximum | report only (ppk) | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Arsenic, total [as As] | monthly average | report only (mg/L) | all year |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year |
| Barium, total [as Ba] | monthly average | report only (mg/L) | all year |
| Barium, total [as Ba] | daily maximum | report only (mg/L) | all year |
| Cadmium, total [as Cd] | monthly average | report only (mg/L) | all year |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year |
| Copper, total [as Cu] | monthly average | report only (mg/L) | all year |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year |
| Iron, total [as Fe] | monthly average | report only (mg/L) | all year |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year |
| Manganese, total [as Mn] | monthly average | report only (mg/L) | all year |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year |
| Zinc, total [as Zn] | monthly average | report only (mg/L) | all year |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year |
| Selenium, total [as Se] | monthly average | report only (mg/L) | all year |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Mercury, total [as Hg] | monthly average | report only (mg/L) | all year |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year |
Cited limits by parameter: South Carolina'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/SC0049336 · MCP: https://passage-data.com/mcp