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Electric Services, major discharger, Sergeant Bluff, Iowa. NPDES permit IA0004103, in force until Mar 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | 30-day average | ≤ 125.1 deg F | Jul | 009 |
| Temperature, water deg. fahrenheit | 30-day average | ≤ 107.2 deg F | Apr | 009 |
| Temperature, water deg. fahrenheit | 30-day average | ≤ 84.4 deg F | Mar | 009 |
| Temperature, water deg. fahrenheit | 30-day average | ≤ 69.3 deg F | Jan | 009 |
| Temperature, water deg. fahrenheit | 30-day average | ≤ 68.5 deg F | Dec | 009 |
| Temperature, water deg. fahrenheit | 30-day average | ≤ 86.2 deg F | Nov | 009 |
| Temperature, water deg. fahrenheit | 30-day average | ≤ 100.6 deg F | Oct | 009 |
| Temperature, water deg. fahrenheit | 30-day average | ≤ 115.9 deg F | May | 009 |
| Temperature, water deg. fahrenheit | 30-day average | ≤ 68.9 deg F | Feb | 009 |
| Temperature, water deg. fahrenheit | 30-day average | ≤ 123.3 deg F | Aug | 009 |
| Temperature, water deg. fahrenheit | 30-day average | ≤ 118.8 deg F | Sep | 009 |
| Temperature, water deg. fahrenheit | 30-day average | ≤ 121.5 deg F | Jun | 009 |
| pH | daily minimum | ≥ 6 SU | all year | 016 |
| pH | daily maximum | ≤ 9 SU | all year | 016 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 016 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 016 |
| Oil & Grease | 30-day average | ≤ 15 mg/L | all year | 016 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 016 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | ≤ 1 N=0;Y=1 | all year | 016 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | ≤ 1 N=0;Y=1 | all year | 016 |
| pH | daily minimum | ≥ 6 SU | all year | 017 |
| pH | daily maximum | ≤ 9 SU | all year | 017 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 017 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 017 |
| Oil & Grease | 30-day average | ≤ 15 mg/L | all year | 017 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 017 |
| Copper, total [as Cu] | 30-day average | ≤ 1 mg/L | all year | 017 |
| Copper, total [as Cu] | daily maximum | ≤ 1 mg/L | all year | 017 |
| Iron, total [as Fe] | 30-day average | ≤ 1 mg/L | all year | 017 |
| Iron, total [as Fe] | daily maximum | ≤ 1 mg/L | all year | 017 |
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/IA0004103 · MCP: https://passage-data.com/mcp