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Sewage treatment plant, Klemme, Iowa. NPDES permit IA0038466, in force until Nov 30, 2028. Last 12 months: over a limit 5 times (last August 2026), 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Nitrogen, ammonia total [as N], daily maximum | 6.5251 | ≤ 4.5 mg/L | 45% |
| April 2026 | Nitrogen, ammonia total [as N], daily maximum | 9.24 | ≤ 5.4 mg/L | 71% |
| June 2026 | Nitrogen, ammonia total [as N], 30-day average | 3.73548 | ≤ 3.6 mg/L | 4% |
| June 2026 | Nitrogen, ammonia total [as N], daily maximum | 8.41 | ≤ 4 mg/L | 110% |
| August 2026 | Nitrogen, ammonia total [as N], daily maximum | 7.6532 | ≤ 3.5 mg/L | 119% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 4.2 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 | ≤ 80 mg/L | all year |
| Solids, total suspended | 7-day average | ≤ 120 mg/L | all year |
| Solids, total suspended | 30-day average | ≤ 427 lb/d | all year |
| Solids, total suspended | 7-day average | ≤ 641 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 | ≤ 3.3 mg/L | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.3 mg/L | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.7 mg/L | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.8 mg/L | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.5 mg/L | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.1 mg/L | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4 mg/L | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.6 mg/L | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 9.3 mg/L | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 9.6 mg/L | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.9 mg/L | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.6 mg/L | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.3 mg/L | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.3 mg/L | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4 mg/L | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.8 mg/L | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.5 mg/L | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.4 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4 mg/L | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4 mg/L | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 21.3 mg/L | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.6 mg/L | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.3 mg/L | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.5 mg/L | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 15 lb/d | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 15 lb/d | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 9.8 lb/d | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 22 lb/d | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 21.6 lb/d | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 14.9 lb/d | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 17 lb/d | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 12.8 lb/d | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 33.4 lb/d | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 38.5 lb/d | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 10.3 lb/d | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 9.3 lb/d | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 15 lb/d | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 15 lb/d | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.1 lb/d | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 22 lb/d | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 21.6 lb/d | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 26 lb/d | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.1 lb/d | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.1 lb/d | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 108 lb/d | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 46.4 lb/d | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 15 lb/d | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 15.2 lb/d | Aug |
| 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 | ≤ 133 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 214 lb/d | all year |
Cited limits by parameter: Iowa's rules and the federal ones.
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