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Elementary And Secondary Schools, Donnellson, Iowa. NPDES permit IA0069426, in force until Feb 28, 2031. Last 12 months: over a limit 3 times (last March 2026), 25 required values missing, 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| February 2026 | Nitrogen, ammonia total [as N], 30-day average | 9 | ≤ 5.8 mg/L | 55% |
| March 2026 | Nitrogen, ammonia total [as N], 30-day average | 9 | ≤ 5.1 mg/L | 76% |
| March 2026 | Nitrogen, ammonia total [as N], daily maximum | 9 | ≤ 5.8 mg/L | 55% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 1 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 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 |
| Solids, total suspended | 30-day average | ≤ 13 lb/d | all year |
| Solids, total suspended | 7-day average | ≤ 20 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 | ≤ 5.8 mg/L | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4 mg/L | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.4 mg/L | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.6 mg/L | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.3 mg/L | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.7 mg/L | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.3 mg/L | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.1 mg/L | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.6 mg/L | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.5 mg/L | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.9 mg/L | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.6 mg/L | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.4 mg/L | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.6 mg/L | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.9 mg/L | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 26.6 mg/L | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8 mg/L | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.8 mg/L | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.7 mg/L | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.8 mg/L | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.3 mg/L | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.9 mg/L | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.3 mg/L | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .8 lb/d | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .5 lb/d | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .4 lb/d | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .7 lb/d | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .5 lb/d | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .5 lb/d | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .4 lb/d | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .7 lb/d | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .4 lb/d | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .3 lb/d | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .4 lb/d | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ .4 lb/d | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.7 lb/d | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .6 lb/d | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1 lb/d | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.9 lb/d | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .9 lb/d | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .8 lb/d | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .7 lb/d | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .8 lb/d | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1 lb/d | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ .8 lb/d | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.1 lb/d | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.2 lb/d | Jul |
| E. coli | geometric mean | ≤ 816 #/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 | ≤ 4 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 7 lb/d | all year |
Cited limits by parameter: Iowa's rules and the federal ones.
Same industry: the 30 Educational Services permits in Iowa.
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