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Electric Services, major discharger, Beech Island, South Carolina. NPDES permit SC0000574 expired Oct 31, 2020; its limits still apply. Last 12 months: over a limit once (last July 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| July 2026 | Temperature, water deg. fahrenheit, instantaneous maximum | 105 | ≤ 103 deg F | 2% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 001 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 103 deg F | all year | 001 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 001 |
| Temperature, water deg. fahrenheit | instantaneous maximum | report only (deg F) | all year | 001 |
| Chlorine, total residual [dsg. time] | instantaneous maximum | ≤ 2 hr/d | 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 | monthly average | ≤ .176 mg/L | all year | 001 |
| Chlorine, total residual | instantaneous maximum | ≤ .2 mg/L | all year | 001 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 8.5 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 002 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 002 |
| Oil & Grease | daily maximum | ≤ 20 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 |
| Mercury, total [as Hg] | monthly average | report only (ng/L) | all year | 002 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 002 |
Cited limits by parameter: South Carolina's rules and the federal ones.
Same industry: the 17 Electric Services permits in South Carolina.
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Your permit document is the final word. As JSON: /api/v1/permits/SC0000574 · MCP: https://passage-data.com/mcp