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Electric Services, major discharger, Ottumwa, Iowa. NPDES permit IA0060909, in force until May 31, 2029. Last 12 months: over a limit once (last April 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit |
|---|---|---|---|
| April 2026 | pH, daily maximum | 9.25 | ≤ 9 SU |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 002 |
| pH | daily minimum | ≥ 6 SU | all year | 003 |
| pH | daily maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 003 |
| Solids, total suspended | 30-day average | ≤ .5 lb/d | all year | 003 |
| Solids, total suspended | daily maximum | ≤ .751 lb/d | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 25 mg/L | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 40 mg/L | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ .417 lb/d | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ .667 lb/d | all year | 003 |
| pH | daily minimum | ≥ 6 SU | all year | 005 |
| pH | daily maximum | ≤ 9 SU | all year | 005 |
| Chromium, total [as Cr] | 30-day average | ≤ .2 mg/L | all year | 005 |
| Chromium, total [as Cr] | daily maximum | ≤ .2 mg/L | all year | 005 |
| Zinc, total [as Zn] | 30-day average | ≤ 1 mg/L | all year | 005 |
| Zinc, total [as Zn] | daily maximum | ≤ 1 mg/L | all year | 005 |
| Chlorine, free available | 30-day average | ≤ .2 mg/L | all year | 005 |
| Chlorine, free available | daily maximum | ≤ .5 mg/L | all year | 005 |
| Chlorination duration | daily maximum | ≤ 2 hr/d | all year | 005 |
| pH | daily minimum | ≥ 6 SU | all year | 007 |
| pH | daily maximum | ≤ 9 SU | all year | 007 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 007 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 007 |
| Oil & Grease | 30-day average | ≤ 15 mg/L | all year | 007 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 007 |
| Iron, total [as Fe] | 30-day average | ≤ 2.156 mg/L | all year | 008 |
| Iron, total [as Fe] | daily maximum | ≤ 2.156 mg/L | all year | 008 |
| Iron, total [as Fe] | 30-day average | ≤ 54.8 lb/d | all year | 008 |
| Iron, total [as Fe] | daily maximum | ≤ 54.8 lb/d | all year | 008 |
| E. coli | geometric mean | ≤ 126 #/100mL | Mar–Nov | 008 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | ≤ 1 N=0;Y=1 | all year | 008 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | ≤ 1 N=0;Y=1 | all year | 008 |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Chlorine, total residual, 30-day average | 1.142 lb/d | new | — | — |
| Chlorine, total residual, 30-day average | 0.079 mg/L | new | — | — |
| Chlorine, total residual, daily maximum | 1.142 lb/d | new | — | — |
| Chlorine, total residual, daily maximum | 0.079 mg/L | new | — | — |
Cited limits by parameter: Iowa's rules and the federal ones.
Same industry: the 14 Electric Services permits in Iowa.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/IA0060909 · MCP: https://passage-data.com/mcp