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Sewage treatment plant, major discharger, Bucksport, South Carolina. NPDES permit SC0037753, in force until Jul 31, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 01A |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 01A |
| Solids, total suspended | monthly average | ≤ 4841 lb/d | all year | 01A |
| Solids, total suspended | weekly average | ≤ 7262 lb/d | all year | 01A |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 15 mg/L | Mar–Oct | 01A |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Jan, Feb, Nov, Dec | 01A |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 22.5 mg/L | Mar–Oct | 01A |
| Nitrogen, ammonia total [as N] | weekly average | report only (mg/L) | Jan, Feb, Nov, Dec | 01A |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2421 lb/d | Mar–Oct | 01A |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | Jan, Feb, Nov, Dec | 01A |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 3631 lb/d | Mar–Oct | 01A |
| Nitrogen, ammonia total [as N] | weekly average | report only (lb/d) | Jan, Feb, Nov, Dec | 01A |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 01A |
| Flow, in conduit or thru treatment plant | weekly average | report only (MGD) | all year | 01A |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | Jan, Feb, Nov, Dec | 01A |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 17.8 mg/L | Mar–Oct | 01A |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 37.5 mg/L | Jan, Feb, Nov, Dec | 01A |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 26.7 mg/L | Mar–Oct | 01A |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 4034 lb/d | Jan, Feb, Nov, Dec | 01A |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 2873 lb/d | Mar–Oct | 01A |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 6052 lb/d | Jan, Feb, Nov, Dec | 01A |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 4309 lb/d | Mar–Oct | 01A |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 01A |
| Carbonaceous oxygen demand, % removal | monthly average minimum | ≥ 85 % | all year | 01A |
| Oxygen demand, ultimate | monthly average | report only (lb/d) | all year | 01B |
| Oxygen demand, ultimate | weekly average | report only (lb/d) | all year | 01B |
| Oxygen, dissolved [DO] | minimum | ≥ 6 mg/L | all year | 01B |
| pH | minimum | ≥ 6 SU | all year | 01B |
| pH | maximum | ≤ 8.5 SU | all year | 01B |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 01B |
| Nitrogen, total [as N] | weekly average | report only (mg/L) | all year | 01B |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 01B |
| Nitrogen, total [as N] | weekly average | report only (lb/d) | all year | 01B |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 01B |
| Phosphorus, total [as P] | weekly average | report only (mg/L) | all year | 01B |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 01B |
| Phosphorus, total [as P] | weekly average | report only (lb/d) | all year | 01B |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 01B |
| Flow, in conduit or thru treatment plant | weekly average | report only (MGD) | all year | 01B |
| Oxygen demand, ultimate | monthly average | report only (lb/d) | all year | 01C |
| Oxygen demand, ultimate | weekly average | report only (lb/d) | all year | 01C |
| Oxygen, dissolved [DO] | minimum | ≥ 6 mg/L | all year | 01C |
| pH | minimum | ≥ 6 SU | all year | 01C |
| pH | maximum | ≤ 8.5 SU | all year | 01C |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 01C |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 01C |
| Solids, total suspended | monthly average | ≤ 5604 lb/d | all year | 01C |
| Solids, total suspended | weekly average | ≤ 8407 lb/d | all year | 01C |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 01C |
| Nitrogen, total [as N] | weekly average | report only (mg/L) | all year | 01C |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 01C |
| Nitrogen, total [as N] | weekly average | report only (lb/d) | all year | 01C |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 11 mg/L | all year | 01C |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 16.5 mg/L | all year | 01C |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2055 lb/d | all year | 01C |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 3082 lb/d | all year | 01C |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 01C |
| Phosphorus, total [as P] | weekly average | report only (mg/L) | all year | 01C |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 01C |
| Phosphorus, total [as P] | weekly average | report only (lb/d) | all year | 01C |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 01C |
| Flow, in conduit or thru treatment plant | weekly average | report only (MGD) | all year | 01C |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 01C |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 40 mg/L | all year | 01C |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 4670 lb/d | all year | 01C |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 7473 lb/d | all year | 01C |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 01C |
| Carbonaceous oxygen demand, % removal | monthly average minimum | ≥ 85 % | all year | 01C |
| Oxygen demand, ultimate | monthly average | ≤ 5463.58 lb/d | all year | 01D |
| Oxygen demand, ultimate | weekly average | report only (lb/d) | all year | 01D |
| Chlorine, total residual | monthly average | ≤ .258 mg/L | all year | 01D |
| Chlorine, total residual | daily maximum | ≤ .446 mg/L | all year | 01D |
| Chlorine, total residual | monthly average | ≤ 90.53 lb/d | all year | 01D |
| Chlorine, total residual | daily maximum | ≤ 156.7 lb/d | all year | 01D |
| E. coli | 30-day geometric mean | ≤ 126 MPN/100mL | all year | 01D |
| E. coli | daily maximum | ≤ 349 MPN/100mL | all year | 01D |
| E. coli | 30-day geometric mean | ≤ 126 MPN/100mL | all year | 01D |
| E. coli | daily maximum | ≤ 800 MPN/100mL | all year | 01D |
| Mercury, total [as Hg] | monthly average | report only (mg/L) | all year | 01D |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | 01D |
| Mercury, total [as Hg] | monthly average | report only (lb/d) | all year | 01D |
| Mercury, total [as Hg] | daily maximum | report only (lb/d) | all year | 01D |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | daily minimum | report only (%) | all year | 01D |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average | ≤ 25 % | all year | 01D |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily maximum | ≤ 40 % | all year | 01D |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily minimum | report only (%) | all year | 01D |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Chlorine, total residual, daily maximum | 0.417 mg/L | tighter | 0.2 mg/L (12 values) | 0.48× |
| Chlorine, total residual, monthly average | 0.242 mg/L | tighter | 0.164 mg/L (12 values) | 0.678× |
| Chlorine, total residual, monthly average | 89.7 lb/d | tighter | 34.45 lb/d (12 values) | 0.384× |
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/SC0037753 · MCP: https://passage-data.com/mcp