NPDES permit SD0023728 · Minor POTW · effective, expires 2031-06-30 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-07-31.
Reports are due about 28 days after each monitoring period ends (the most common figure among SD permits in EPA's filings — check your permit).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 002 | Temperature, water deg. fahrenheit | 30DA AVG | report only | all year |
| 002 | Temperature, water deg. fahrenheit | DAILY MX | report only | all year |
| 002 | Flow rate | 30DA AVG | report only | all year |
| 002 | Flow rate | DAILY MX | report only | all year |
| 002 | Oxygen, dissolved [DO] | DAILY MN | report only | all year |
| 002 | BOD, 5-day, 20 deg. C | 30DA AVG | <= 30 mg/L | all year |
| 002 | BOD, 5-day, 20 deg. C | MX 7D AV | <= 45 mg/L | all year |
| 002 | BOD, 5-day, 20 deg. C | 30DA AVG | report only | all year |
| 002 | pH | DAILY MN | >= 6.5 SU | all year |
| 002 | pH | DAILY MX | <= 9 SU | all year |
| 002 | Solids, total suspended | 30DA AVG | <= 30 mg/L | all year |
| 002 | Solids, total suspended | MX 7D AV | <= 45 mg/L | all year |
| 002 | Solids, total suspended | 30DA AVG | report only | all year |
| 002 | Nitrogen, total [as N] | DAILY MX | report only | all year |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | report only | Jan, Apr, May, Jun |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 17.8 mg/L | Feb |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 18.4 mg/L | Mar |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 8.5 mg/L | Jul |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 7.1 mg/L | Aug |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 4.8 mg/L | Sep |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 11.7 mg/L | Oct |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 7.5 mg/L | Nov |
| 002 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 9.5 mg/L | Dec |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | report only | Jan, Apr, May, Jun |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 17.8 mg/L | Feb |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 18.4 mg/L | Mar |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 8.5 mg/L | Jul |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 7.1 mg/L | Aug |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 4.8 mg/L | Sep |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 11.7 mg/L | Oct |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 7.5 mg/L | Nov |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 9.5 mg/L | Dec |
| 002 | Phosphorus, total [as P] | DAILY MX | report only | all year |
| 002 | E. coli, colony forming units [CFU] | 30DA GEO | <= 126 #/100mL | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov |
| 002 | E. coli, colony forming units [CFU] | DAILY MX | <= 235 #/100mL | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov |
| 002 | BOD, 5-day, percent removal | MO AV MN | >= 85 % | all year |
| 002 | Solids, suspended percent removal | MO AV MN | >= 85 % | 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