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Sewerage Systems, Clover, South Carolina. NPDES permit SC0037605, in force until Jan 31, 2030. Last 12 months: over a limit 2 times (last December 2025), 6 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | Oxygen, dissolved [DO], minimum | 2.21 | ≥ 5 mg/L | 56% |
| December 2025 | Oxygen, dissolved [DO], minimum | 3.6 | ≥ 5 mg/L | 28% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | minimum | ≥ 5 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 15 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 11 lb/d | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 22 lb/d | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 8.5 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 22 lb/d | all year |
| Solids, total suspended | daily maximum | ≤ 45 lb/d | all year |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.85 mg/L | Jan, Feb, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.31 mg/L | Mar–Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.7 mg/L | Jan, Feb, Nov, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.62 mg/L | Mar–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.6 lb/d | Jan, Feb, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.7 lb/d | Mar–Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.3 lb/d | Jan, Feb, Nov, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.5 lb/d | Mar–Oct |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | 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 |
| Chlorine, total residual | monthly average | ≤ .012 mg/L | all year |
| Chlorine, total residual | daily maximum | ≤ .021 mg/L | all year |
| Chlorine, total residual | monthly average | ≤ .009 lb/d | all year |
| Chlorine, total residual | daily maximum | ≤ .016 lb/d | all year |
| E. coli | 30-day geometric mean | ≤ 126 MPN/100mL | all year |
| E. coli | daily maximum | ≤ 349 MPN/100mL | all year |
| E. coli | 30-day geometric mean | ≤ 126 MPN/100mL | all year |
| E. coli | daily maximum | ≤ 800 MPN/100mL | 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/SC0037605 · MCP: https://passage-data.com/mcp