Passage Data · Check a report · Use it from your AI
Sewage treatment plant, Corsica, South Dakota. NPDES permit SD0021962, in force until Dec 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. centigrade | 30-day average | report only (deg C) | all year |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year |
| Flow rate | 30-day average | report only (MGD) | all year |
| Flow rate | daily maximum | report only (MGD) | all year |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 45 mg/L | all year |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | 30-day average | ≤ 110 mg/L | all year |
| Solids, total suspended | maximum 7-day average | ≤ 165 mg/L | all year |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | report only (mg/L) | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.3 mg/L | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.6 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.7 mg/L | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.6 mg/L | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 11.9 mg/L | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 19 mg/L | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.9 mg/L | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 13.2 mg/L | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 13.1 mg/L | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.7 mg/L | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.7 mg/L | May |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| E. coli, colony forming units [CFU] | 30-day geometric mean | report only (#/100mL) | May–Sep |
| E. coli, colony forming units [CFU] | daily maximum | report only (#/100mL) | May–Sep |
| Flow, total | monthly total | report only (Mgal) | all year |
| Duration of discharge | monthly total | report only (d) | all year |
Cited limits by parameter: South Dakota's rules and the federal ones.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/SD0021962 · MCP: https://passage-data.com/mcp