Passage Data · Check a report · Use it from your AI
Sewage treatment plant, Elkader, Iowa. NPDES permit IA0021962, in force until Mar 31, 2027. Last 12 months: no values over a limit, 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | 30-day average | report only (lb/d) | all year |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year |
| pH | daily minimum | ≥ 5.3 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| pH | 30-day average | report only (SU) | all year |
| pH | daily maximum | report only (SU) | all year |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | all year |
| Solids, total suspended | 30-day average | ≤ 183 lb/d | all year |
| Solids, total suspended | 7-day average | ≤ 275 lb/d | all year |
| Solids, total suspended | 30-day average | report only (mg/L) | all year |
| Solids, total suspended | daily maximum | report only (mg/L) | all year |
| Solids, total suspended | 30-day average | report only (lb/d) | all year |
| Solids, total suspended | daily maximum | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 21.4 mg/L | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.5 mg/L | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 21.5 mg/L | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 20.2 mg/L | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 10.1 mg/L | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 9.7 mg/L | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 20.5 mg/L | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 13 mg/L | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 9.2 mg/L | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 19.9 mg/L | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 8.4 mg/L | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 15.5 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 21.4 mg/L | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.5 mg/L | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 21.5 mg/L | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 20.2 mg/L | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 22.1 mg/L | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 21.1 mg/L | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 20.5 mg/L | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 19.1 mg/L | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 20 mg/L | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 19.9 mg/L | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.2 mg/L | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 19.6 mg/L | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 87 lb/d | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 55 lb/d | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 97 lb/d | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 44 lb/d | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 19 lb/d | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 21 lb/d | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 65 lb/d | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 27 lb/d | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18 lb/d | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 44 lb/d | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18 lb/d | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 32 lb/d | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 102 lb/d | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 95 lb/d | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 97 lb/d | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 103 lb/d | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 114 lb/d | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 108 lb/d | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 104 lb/d | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 99 lb/d | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 105 lb/d | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 97 lb/d | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 94 lb/d | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 102 lb/d | Apr |
| E. coli | geometric mean | ≤ 126 #/100mL | Mar–Nov |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 25 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 40 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 152 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 244 lb/d | all year |
Cited limits by parameter: Iowa'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/IA0021962 · MCP: https://passage-data.com/mcp