NPDES permit SC0024465 · Major POTW · effective, expires 2026-09-30 · EPA's file as of 2026-09-19
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Last 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 demand, ultimate | MO AVG | = 1167 lb/d | all year |
| 001 | Oxygen demand, ultimate | WKLY AVG | = 1750 lb/d | all year |
| 001 | Oxygen, dissolved [DO] | MINIMUM | >= 5 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 30 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | WKLY AVG | <= 45 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 626 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | WKLY AVG | <= 939 lb/d | 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 | <= 626 lb/d | all year |
| 001 | Solids, total suspended | WKLY AVG | <= 939 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 | <= 2.4 mg/L | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 5 mg/L | Jan, Feb, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 3.6 mg/L | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 7.5 mg/L | Jan, Feb, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 50 lb/d | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 104 lb/d | Jan, Feb, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 75 lb/d | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 156 lb/d | Jan, Feb, Nov, Dec |
| 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 | Cadmium, total [as Cd] | MO AVG | = .00059 mg/L | all year |
| 001 | Cadmium, total [as Cd] | DAILY MX | = .004 mg/L | all year |
| 001 | Cadmium, total [as Cd] | MO AVG | = .012 lb/d | all year |
| 001 | Cadmium, total [as Cd] | DAILY MX | = .084 lb/d | all year |
| 001 | Copper, total [as Cu] | MO AVG | = .018 mg/L | all year |
| 001 | Copper, total [as Cu] | DAILY MX | = .026 mg/L | all year |
| 001 | Copper, total [as Cu] | MO AVG | = .38 lb/d | all year |
| 001 | Copper, total [as Cu] | DAILY MX | = .54 lb/d | all year |
| 001 | Thallium, total [as Tl] | MO AVG | = .00054 mg/L | all year |
| 001 | Thallium, total [as Tl] | DAILY MX | = .00079 mg/L | all year |
| 001 | Thallium, total [as Tl] | MO AVG | = .01 lb/d | all year |
| 001 | Thallium, total [as Tl] | DAILY MX | = .02 lb/d | 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 | <= .013 mg/L | all year |
| 001 | Chlorine, total residual | DAILY MX | <= .022 mg/L | all year |
| 001 | Chlorine, total residual | MO AVG | <= .27 lb/d | all year |
| 001 | Chlorine, total residual | DAILY MX | <= .46 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 | BOD, 5-day, percent removal | MO AV MN | >= 85 % | all year |
| 001 | Solids, suspended percent 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