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Sewage treatment plant, Braddyville, Iowa. NPDES permit IA0057151, in force until Aug 31, 2030. Last 12 months: over a limit 4 times (last November 2025), 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | E. coli, geometric mean | 2419.6 | ≤ 630 #/100mL | 284% |
| November 2025 | Nitrogen, ammonia total [as N], 30-day average | 13.45 | ≤ 5.7 mg/L | 136% |
| November 2025 | Nitrogen, ammonia total [as N], daily maximum | 13.8 | ≤ 5.7 mg/L | 142% |
| November 2025 | Nitrogen, ammonia total [as N], daily maximum | 14.2714 | ≤ 12.3 lb/d | 16% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | 30-day average | ≤ 80 mg/L | all year |
| Solids, total suspended | 7-day average | ≤ 120 mg/L | all year |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.2 mg/L | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 24 mg/L | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6.9 mg/L | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 11.5 mg/L | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6.9 mg/L | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 12 mg/L | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.7 mg/L | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.7 mg/L | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.7 mg/L | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.7 mg/L | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 11.5 mg/L | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 11.4 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.2 mg/L | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 24 mg/L | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.9 mg/L | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 11.5 mg/L | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.9 mg/L | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12 mg/L | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.7 mg/L | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.7 mg/L | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.7 mg/L | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.7 mg/L | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 11.5 mg/L | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 11.4 mg/L | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 11.2 lb/d | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 52 lb/d | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 14.9 lb/d | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 24.9 lb/d | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 15 lb/d | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 26.1 lb/d | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 12.3 lb/d | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 12.4 lb/d | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 12.3 lb/d | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 10.2 lb/d | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 24.8 lb/d | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 24.8 lb/d | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 11.2 lb/d | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 52 lb/d | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.9 lb/d | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 24.9 lb/d | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 15 lb/d | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 26.1 lb/d | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.3 lb/d | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.4 lb/d | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.3 lb/d | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.2 lb/d | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 24.8 lb/d | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 24.8 lb/d | Apr |
| E. coli | geometric mean | ≤ 630 #/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 |
Cited limits by parameter: Iowa's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
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