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Water Supply, Elkhorn, Nebraska. NPDES permit NE0137782, in force until Dec 31, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 001 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 001 |
| Conductivity | monthly average | report only (mmho/cm) | all year | 001 |
| Conductivity | daily maximum | report only (mmho/cm) | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, dissolved [as As] | monthly average | report only (mg/L) | all year | 001 |
| Arsenic, dissolved [as As] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, dissolved [as Fe] | monthly average | report only (mg/L) | all year | 001 |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Manganese, dissolved [as Mn] | monthly average | report only (mg/L) | all year | 001 |
| Manganese, dissolved [as Mn] | daily maximum | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | monthly average | ≤ .688 mg/L | Mar–May | 001 |
| Chlorine, total residual | monthly average | ≤ .12 mg/L | Jun–Oct | 001 |
| Chlorine, total residual | monthly average | ≤ .343 mg/L | Jan, Feb, Nov, Dec | 001 |
| Chlorine, total residual | daily maximum | ≤ 1.38 mg/L | Mar–May | 001 |
| Chlorine, total residual | daily maximum | ≤ .241 mg/L | Jun–Oct | 001 |
| Chlorine, total residual | daily maximum | ≤ .689 mg/L | Jan, Feb, Nov, Dec | 001 |
| Toxicity [acute], Ceriodaphnia dubia | value | report only (tox acute) | all year | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | value | report only (tox acute) | all year | 001 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 002 |
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | ≤ 8.5 SU | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| Arsenic, dissolved [as As] | monthly average | report only (mg/L) | all year | 002 |
| Arsenic, dissolved [as As] | daily maximum | ≤ .01 mg/L | all year | 002 |
| Iron, dissolved [as Fe] | monthly average | report only (mg/L) | all year | 002 |
| Iron, dissolved [as Fe] | daily maximum | ≤ .3 mg/L | all year | 002 |
| Manganese, dissolved [as Mn] | monthly average | report only (mg/L) | all year | 002 |
| Manganese, dissolved [as Mn] | daily maximum | ≤ .69 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | monthly average | ≤ .011 mg/L | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ .019 mg/L | all year | 002 |
| Toxicity [acute], Ceriodaphnia dubia | value | ≤ 1 tox acute | all year | 002 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | value | ≤ 1 tox acute | all year | 002 |
| Solids, total dissolved [TDS] | monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved [TDS] | daily maximum | ≤ 500 mg/L | all year | 002 |
Cited limits by parameter: Nebraska's rules and the federal ones.
Same industry: the 17 Water Supply permits in Nebraska.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/NE0137782 · MCP: https://passage-data.com/mcp