Passage Data · Check a report · Use it from your AI
Sewage treatment plant, Avoca, Iowa. NPDES permit IA0030708, in force until Nov 30, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| pH | daily minimum | ≥ 6.2 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 |
| 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 |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| E. coli, geometric mean | 126 #/100mL (Mar–Nov) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 129.5 lb/d (Feb) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 3.4 mg/L (Oct) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 4.7 mg/L (Jun) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 4.6 mg/L (May) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 129.6 lb/d (Jan) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 4.7 mg/L (Mar) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 47.3 lb/d (Oct) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 65 lb/d (Mar) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 9.4 mg/L (Jan) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 9.4 mg/L (Feb) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 64 lb/d (May) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 64 lb/d (Jun) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 64.1 lb/d (Dec) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 4.7 mg/L (Dec) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 5.9 mg/L (Apr) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 81 lb/d (Apr) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 36 lb/d (Aug) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 2.6 mg/L (Aug) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 47.3 lb/d (Nov) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 3.4 mg/L (Nov) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 2.8 mg/L (Jul) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 37.9 lb/d (Jul) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 39.9 lb/d (Sep) | new | — | — |
| Nitrogen, ammonia total [as N], 30-day average | 2.9 mg/L (Sep) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 65 lb/d (Mar) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 4.7 mg/L (Mar) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 21.1 mg/L (Jan) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 64 lb/d (May) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 9.4 mg/L (Feb) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 64 lb/d (Jun) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 47.3 lb/d (Oct) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 129.5 lb/d (Feb) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 4.6 mg/L (May) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 3.4 mg/L (Oct) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 4.7 mg/L (Jun) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 290.1 lb/d (Jan) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 4.7 mg/L (Dec) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 64.1 lb/d (Dec) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 81 lb/d (Apr) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 5.9 mg/L (Apr) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 3.4 mg/L (Aug) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 46.2 lb/d (Aug) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 47.3 lb/d (Nov) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 3.4 mg/L (Nov) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 53.7 lb/d (Jul) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 3.9 mg/L (Jul) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 44.4 lb/d (Sep) | new | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 3.2 mg/L (Sep) | new | — | — |
Cited limits by parameter: Iowa's rules and the federal ones.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/IA0030708 · MCP: https://passage-data.com/mcp