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Cheese, Natural And Processed, Sanborn, Iowa. NPDES permit IA0081965, in force until Apr 30, 2030. Last 12 months: over a limit once (last October 2025), 15 required values missing, 5 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | BOD, 5-day, 20 deg. C, 30-day average | 96.15191 | ≤ 41.3 lb/d | 133% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 41.3 lb/d | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 104 lb/d | all year |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | 30-day average | ≤ 62.6 lb/d | all year |
| Solids, total suspended | daily maximum | ≤ 155.2 lb/d | all year |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.3 mg/L | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.7 mg/L | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.3 mg/L | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.3 mg/L | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.5 mg/L | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.1 mg/L | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2 mg/L | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.6 mg/L | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.7 mg/L | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3 mg/L | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.4 mg/L | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.9 mg/L | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.6 mg/L | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.4 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.6 mg/L | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.8 mg/L | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.4 mg/L | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.4 mg/L | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.4 mg/L | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.4 mg/L | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.4 mg/L | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.4 mg/L | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.1 mg/L | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.4 mg/L | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.3 lb/d | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.8 lb/d | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.1 lb/d | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 3.9 lb/d | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.7 lb/d | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.4 lb/d | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.3 lb/d | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.1 lb/d | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.2 lb/d | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.3 lb/d | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.3 lb/d | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 2.7 lb/d | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.1 lb/d | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.3 lb/d | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.1 lb/d | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.2 lb/d | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.6 lb/d | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.6 lb/d | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.3 lb/d | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.3 lb/d | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.3 lb/d | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.3 lb/d | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6 lb/d | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.3 lb/d | Nov |
| Chlorine, total residual | 30-day average | ≤ .053 mg/L | all year |
| Chlorine, total residual | daily maximum | ≤ .092 mg/L | all year |
| Chlorine, total residual | 30-day average | ≤ .035 lb/d | all year |
| Chlorine, total residual | daily maximum | ≤ .061 lb/d | all year |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Nitrogen, ammonia total [as N], 30-day average | 1.6 mg/L (Apr) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 1 mg/L (Aug) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 1.8 mg/L (May) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 2.6 mg/L (Dec) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 1.1 mg/L (Sep) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 1.6 mg/L (Oct) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 2.5 mg/L (Nov) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 1.4 mg/L (Jun) | tighter | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 1.1 mg/L (Jul) | tighter | — | — |
Cited limits by parameter: Iowa's rules and the federal ones.
Same industry: the 48 Food and Kindred Products permits in Iowa.
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