NPDES permit SC0025178 · Major POTW · effective, expires 2028-02-29 · EPA's file as of 2026-09-19
Check this month's numbers before you fileLast period with anything received: 2026-08-31.
Reports are due about 29 days after each monitoring period ends (the most common figure among SC permits in EPA's filings — check your permit).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Oxygen, dissolved [DO] | MINIMUM | >= 5 mg/L | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 8.5 SU | all year |
| 001 | Solids, total suspended | MO AVG | <= 30 mg/L | all year |
| 001 | Solids, total suspended | WKLY AVG | <= 45 mg/L | all year |
| 001 | Solids, total suspended | MO AVG | <= 976 lb/d | all year |
| 001 | Solids, total suspended | WKLY AVG | <= 1464 lb/d | all year |
| 001 | Nitrogen, total [as N] | MO AVG | report only | all year |
| 001 | Nitrogen, total [as N] | WKLY AVG | report only | all year |
| 001 | Nitrogen, total [as N] | MO AVG | report only | all year |
| 001 | Nitrogen, total [as N] | WKLY AVG | report only | all year |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 4.26 mg/L | Jan, Feb, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 2.46 mg/L | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 6.39 mg/L | Jan, Feb, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 3.69 mg/L | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 139 lb/d | Jan, Feb, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 80 lb/d | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 208 lb/d | Jan, Feb, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 120 lb/d | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Phosphorus, total [as P] | MO AVG | report only | all year |
| 001 | Phosphorus, total [as P] | WKLY AVG | report only | all year |
| 001 | Phosphorus, total [as P] | MO AVG | report only | all year |
| 001 | Phosphorus, total [as P] | WKLY AVG | report only | all year |
| 001 | Lead, total [as Pb] | MO AVG | report only | all year |
| 001 | Lead, total [as Pb] | DAILY MX | report only | all year |
| 001 | Lead, total [as Pb] | MO AVG | report only | all year |
| 001 | Lead, total [as Pb] | DAILY MX | report only | all year |
| 001 | Polychlorinated biphenyls [PCBs] | MO AVG | report only | all year |
| 001 | Polychlorinated biphenyls [PCBs] | DAILY MX | report only | all year |
| 001 | Polychlorinated biphenyls [PCBs] | MO AVG | report only | all year |
| 001 | Polychlorinated biphenyls [PCBs] | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | WKLY AVG | report only | all year |
| 001 | Chlorine, total residual | MO AVG | <= .027 mg/L | all year |
| 001 | Chlorine, total residual | DAILY MX | <= .047 mg/L | all year |
| 001 | Chlorine, total residual | MO AVG | <= .88 lb/d | all year |
| 001 | Chlorine, total residual | DAILY MX | <= 1.53 lb/d | all year |
| 001 | E. coli | 30DAVGEO | <= 126 MPN/100mL | all year |
| 001 | E. coli | DAILY MX | <= 349 MPN/100mL | all year |
| 001 | E. coli | 30DAVGEO | <= 126 MPN/100mL | all year |
| 001 | E. coli | DAILY MX | <= 800 MPN/100mL | all year |
| 001 | Mercury, total [as Hg] | MO AVG | report only | all year |
| 001 | Mercury, total [as Hg] | DAILY MX | report only | all year |
| 001 | Mercury, total [as Hg] | MO AVG | report only | all year |
| 001 | Mercury, total [as Hg] | DAILY MX | report only | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 12.45 mg/L | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | WKLY AVG | = 19.8 mg/L | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | = 405 lb/d | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | WKLY AVG | = 644 lb/d | all year |
| 001 | Solids, suspended percent removal | MO AV MN | >= 85 % | all year |
| 001 | Carbonaceous oxygen demand, % removal | MO AV MN | = 85 % | all year |
| 001 | LC50 Static 48Hr Acute Ceriodaphnia dubia | DAILY MN | report only | all year |
| 001 | %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | MO AVG | <= 25 % | all year |
| 001 | %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | DAILY MX | <= 40 % | all year |
| 001 | IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | DAILY MN | report only | all year |
Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states