NPDES permit IA0031232 · Minor POTW · effective, expires 2029-08-31 · EPA's file as of 2026-09-19
Check this month's numbers before you fileLast period with anything received: 2026-08-31. Most often over: pH (1).
Reports are due about 15 days after each monitoring period ends (the most common figure among IA permits in EPA's filings — check your permit).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | pH | DAILY MN | >= 6 SU | all year |
| 001 | pH | DAILY MX | <= 9 SU | all year |
| 001 | Solids, total suspended | 30DA AVG | <= 80 mg/L | all year |
| 001 | Solids, total suspended | 7 DA AVG | <= 120 mg/L | all year |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 3.5 mg/L | Jan |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 2.4 mg/L | Nov |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 1 mg/L | Jul |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 1 mg/L | Aug |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 3.5 mg/L | Mar |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 2.5 mg/L | Dec |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 1.6 mg/L | Oct |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 1.6 mg/L | Apr |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 1.4 mg/L | Jun |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 1.8 mg/L | May |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 1.1 mg/L | Sep |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 4.1 mg/L | Feb |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 12.2 mg/L | Jan |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 2.8 mg/L | Nov |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 3.4 mg/L | Jul |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 2.8 mg/L | Aug |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 4.1 mg/L | Mar |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 4 mg/L | Dec |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 2.8 mg/L | Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 4.9 mg/L | Apr |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 3.4 mg/L | Jun |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 3.4 mg/L | May |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 2.8 mg/L | Sep |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 8.6 mg/L | Feb |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 71.5 lb/d | Jan |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 48.8 lb/d | Nov |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 21.2 lb/d | Jul |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 20.2 lb/d | Aug |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 71.5 lb/d | Mar |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 52 lb/d | Dec |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 32.7 lb/d | Oct |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 32.1 lb/d | Apr |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 27.6 lb/d | Jun |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 36.6 lb/d | May |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 22.3 lb/d | Sep |
| 001 | Nitrogen, ammonia total [as N] | 30DA AVG | <= 83 lb/d | Feb |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 249.3 lb/d | Jan |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 56.9 lb/d | Nov |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 69.1 lb/d | Jul |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 57.8 lb/d | Aug |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 83.3 lb/d | Mar |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 82 lb/d | Dec |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 57 lb/d | Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 99.2 lb/d | Apr |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 69 lb/d | Jun |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 68.9 lb/d | May |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 57.1 lb/d | Sep |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 176.6 lb/d | Feb |
| 001 | BOD, carbonaceous [5 day, 20 C] | 30DA AVG | <= 25 mg/L | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | 7 DA AVG | <= 40 mg/L | all year |
Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states