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Sewage treatment plant, Bevington, Iowa. NPDES permit IA0081418, in force until Sep 30, 2031. Last 12 months: no values over a limit, 4 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 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 | ≤ 2.5 lb/d | all year |
| Solids, total suspended | 7-day average | ≤ 3.7 lb/d | all year |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 36.2 mg/L | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 29.7 mg/L | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 30 mg/L | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 30.8 mg/L | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 31.3 mg/L | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 30.3 mg/L | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 33.2 mg/L | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 29.7 mg/L | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 28.3 mg/L | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 32.7 mg/L | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 34.1 mg/L | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 34.6 mg/L | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 36.2 mg/L | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 29.7 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 30 mg/L | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 30.8 mg/L | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 31.3 mg/L | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 30.3 mg/L | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 33.2 mg/L | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 29.7 mg/L | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 28.3 mg/L | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 32.7 mg/L | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 34.1 mg/L | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 34.6 mg/L | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.6 lb/d | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.2 lb/d | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.3 lb/d | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.3 lb/d | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.3 lb/d | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.3 lb/d | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.4 lb/d | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.2 lb/d | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.1 lb/d | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.4 lb/d | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.5 lb/d | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.6 lb/d | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.6 lb/d | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.2 lb/d | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.3 lb/d | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.3 lb/d | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.3 lb/d | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.3 lb/d | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.4 lb/d | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.2 lb/d | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.1 lb/d | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.4 lb/d | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.5 lb/d | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.6 lb/d | Jul |
| Chlorine, total residual | 30-day average | ≤ .068 mg/L | all year |
| Chlorine, total residual | daily maximum | ≤ .068 mg/L | all year |
| Chlorine, total residual | 30-day average | ≤ .005 lb/d | all year |
| Chlorine, total residual | daily maximum | ≤ .005 lb/d | all year |
| 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 | ≤ 2.1 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 3.3 lb/d | all year |
Cited limits by parameter: Iowa's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/IA0081418 · MCP: https://passage-data.com/mcp