Passage Data · Check a report · Use it from your AI
Sewage treatment plant, Columbia, South Dakota. NPDES permit SD0022926, in force until Oct 31, 2028. Last 12 months: no values over a limit, 32 required values missing, 6 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | 30-day average | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| Flow rate | 30-day average | report only (MGD) | all year | 001 |
| Flow rate | daily maximum | report only (MGD) | all year | 001 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 45 mg/L | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | maximum 7-day average | ≤ 45 mg/L | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.8 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.5 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.2 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.3 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.8 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.8 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.1 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Feb | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jan | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.9 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.3 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.4 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.6 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.4 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.2 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.2 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.2 mg/L | Aug | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| E. coli, colony forming units [CFU] | 30-day geometric mean | ≤ 630 #/100mL | May–Sep | 001 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 1178 #/100mL | May–Sep | 001 |
| Flow, total | monthly total | report only (Mgal) | all year | 001 |
| Duration of discharge | monthly total | report only (d) | all year | 001 |
| Temperature, water deg. centigrade | 30-day average | report only (deg C) | all year | 002 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 002 |
| Flow rate | 30-day average | report only (MGD) | all year | 002 |
| Flow rate | daily maximum | report only (MGD) | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 30 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum 7-day average | ≤ 45 mg/L | all year | 002 |
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | maximum 7-day average | ≤ 45 mg/L | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1 mg/L | Aug | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1 mg/L | Jul | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3 mg/L | Dec | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.8 mg/L | Apr | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1 mg/L | Sep | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.2 mg/L | Mar | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1 mg/L | Jun | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.3 mg/L | Nov | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.8 mg/L | May | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.5 mg/L | Jan | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.1 mg/L | Oct | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.8 mg/L | Feb | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.2 mg/L | Aug | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.2 mg/L | Jul | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.4 mg/L | Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.3 mg/L | Apr | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.2 mg/L | Sep | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14 mg/L | Mar | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.4 mg/L | Jun | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.9 mg/L | Nov | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | May | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jan | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.6 mg/L | Oct | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Feb | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| E. coli, colony forming units [CFU] | 30-day geometric mean | ≤ 630 #/100mL | May–Sep | 002 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 1178 #/100mL | May–Sep | 002 |
| Flow, total | monthly total | report only (Mgal) | all year | 002 |
| Duration of discharge | monthly total | report only (d) | all year | 002 |
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/SD0022926 · MCP: https://passage-data.com/mcp