Passage Data · Check a report · Use it from your AI
Sewage treatment plant, Dysart, Iowa. NPDES permit IA0020745, in force until Nov 30, 2027. Last 12 months: over a limit 2 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| June 2026 | Nitrogen, ammonia total [as N], 30-day average | 1.682 | ≤ 1.3 mg/L | 29% |
| June 2026 | Nitrogen, ammonia total [as N], daily maximum | 8.41 | ≤ 3.2 mg/L | 163% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year |
| 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 | ≥ 6.5 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 | ≤ 208 lb/d | all year |
| Solids, total suspended | 7-day average | ≤ 312 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 | ≤ 1.3 mg/L | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5 mg/L | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.9 mg/L | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.4 mg/L | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.9 mg/L | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.7 mg/L | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2 mg/L | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1 mg/L | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.8 mg/L | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.3 mg/L | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.2 mg/L | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.1 mg/L | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.7 mg/L | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.4 mg/L | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.7 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7 mg/L | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.9 mg/L | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.7 mg/L | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.7 mg/L | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.7 mg/L | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.2 mg/L | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.2 mg/L | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.9 mg/L | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.2 mg/L | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 7.9 lb/d | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 29.4 lb/d | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 11.4 lb/d | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 25.4 lb/d | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 25.3 lb/d | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 17.3 lb/d | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 11.6 lb/d | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6.8 lb/d | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 12.7 lb/d | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 9.3 lb/d | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.4 lb/d | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 7.5 lb/d | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.4 lb/d | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 58.2 lb/d | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 32.6 lb/d | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 48.3 lb/d | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 26.9 lb/d | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.4 lb/d | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.4 lb/d | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.4 lb/d | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 22.2 lb/d | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 22.2 lb/d | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 26.9 lb/d | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 22.2 lb/d | Jul |
| 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 | ≤ 173 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 277 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/IA0020745 · MCP: https://passage-data.com/mcp