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Sewage treatment plant, major discharger, Algona, Iowa. NPDES permit IA0022055, in force until Feb 29, 2028. Last 12 months: over a limit 2 times (last February 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Copper, total [as Cu], daily maximum | .044 | ≤ .04127 mg/L | 7% |
| February 2026 | Copper, total [as Cu], daily maximum | .0735 | ≤ .04127 mg/L | 78% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 3.8 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 | ≥ 6.2 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 | ≤ 30 mg/L | all year |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | all year |
| Solids, total suspended | 30-day average | ≤ 651 lb/d | all year |
| Solids, total suspended | 7-day average | ≤ 976 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, total [as N] | 30-day average | report only (mg/L) | all year |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, total [as N] | 30-day average | report only (lb/d) | all year |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year |
| Nitrogen, total [as N] | 30-day average | report only (mg/L) | all year |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, total [as N] | 30-day average | report only (lb/d) | all year |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.2 mg/L | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6.7 mg/L | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.7 mg/L | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 15.1 mg/L | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6.9 mg/L | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 10.9 mg/L | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 8.9 mg/L | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.4 mg/L | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 16.8 mg/L | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 10.3 mg/L | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 7.2 mg/L | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4.6 mg/L | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.4 mg/L | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 17.6 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 16.5 mg/L | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 17.6 mg/L | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 17.6 mg/L | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 17.9 mg/L | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 17 mg/L | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 19.9 mg/L | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 16.8 mg/L | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 16.5 mg/L | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 17.3 mg/L | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.5 mg/L | Sep |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 56.2 lb/d | Aug |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 89.8 lb/d | Apr |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 66.5 lb/d | Jun |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 202.5 lb/d | Jan |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 92.1 lb/d | Oct |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 146.6 lb/d | Dec |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 120.6 lb/d | Mar |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 59.2 lb/d | Jul |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 232.8 lb/d | Feb |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 137.7 lb/d | Nov |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 98.6 lb/d | May |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 62.3 lb/d | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 225.5 lb/d | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 362.4 lb/d | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 336 lb/d | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 355.9 lb/d | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 362.4 lb/d | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 368.3 lb/d | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 344.2 lb/d | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 245 lb/d | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 337 lb/d | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 339.2 lb/d | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 352.9 lb/d | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 344.8 lb/d | Sep |
| Nitrogen, nitrate total [as N] | 30-day average | ≤ 435 lb/d | all year |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 712 lb/d | all year |
| Nitrogen, Kjeldahl, total [as N] | 30-day average | report only (mg/L) | all year |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, Kjeldahl, total [as N] | 30-day average | report only (lb/d) | all year |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (lb/d) | all year |
| Phosphorus, total [as P] | 30-day average | report only (mg/L) | all year |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | 30-day average | report only (lb/d) | all year |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year |
| Phosphorus, total [as P] | 30-day average | report only (mg/L) | all year |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | 30-day average | report only (lb/d) | all year |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year |
| Chloride [as Cl] | 30-day average | report only (mg/L) | all year |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year |
| Chloride [as Cl] | 30-day average | report only (lb/d) | all year |
| Chloride [as Cl] | daily maximum | report only (lb/d) | all year |
| Copper, total [as Cu] | 30-day average | ≤ .04127 mg/L | all year |
| Copper, total [as Cu] | daily maximum | ≤ .04127 mg/L | all year |
| Copper, total [as Cu] | 30-day average | ≤ .7416 lb/d | all year |
| Copper, total [as Cu] | daily maximum | ≤ .7416 lb/d | all year |
| E. coli | geometric mean | ≤ 126 #/100mL | Mar–Nov |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | ≤ 1 N=0;Y=1 | all year |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | ≤ 1 N=0;Y=1 | all year |
| 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 | ≤ 542 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 867 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/IA0022055 · MCP: https://passage-data.com/mcp