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Water Supply, Ashland, Nebraska. NPDES permit NE0111155, in force until Sep 30, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Conductivity | monthly average | report only (umho/cm) | all year | 002 |
| Conductivity | daily maximum | report only (umho/cm) | all year | 002 |
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | ≤ 9 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 |
| Iron, dissolved [as Fe] | monthly average | report only (mg/L) | all year | 002 |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year | 002 |
| Manganese, dissolved [as Mn] | monthly average | report only (mg/L) | all year | 002 |
| Manganese, dissolved [as Mn] | daily maximum | report only (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 | ≤ .01 mg/L | Mar–May | 002 |
| Chlorine, total residual | monthly average | ≤ .01 mg/L | Jun–Oct | 002 |
| Chlorine, total residual | monthly average | ≤ .01 mg/L | Jan, Feb, Nov, Dec | 002 |
| Chlorine, total residual | daily maximum | ≤ .02 mg/L | Mar–May | 002 |
| Chlorine, total residual | daily maximum | ≤ .02 mg/L | Jun–Oct | 002 |
| Chlorine, total residual | daily maximum | ≤ .02 mg/L | Jan, Feb, Nov, Dec | 002 |
| Conductivity | monthly average | report only (umho/cm) | all year | 006 |
| Conductivity | daily maximum | report only (umho/cm) | all year | 006 |
| pH | daily minimum | ≥ 6.5 SU | all year | 006 |
| pH | daily maximum | ≤ 9 SU | all year | 006 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 006 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 006 |
| Iron, dissolved [as Fe] | monthly average | report only (mg/L) | all year | 006 |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year | 006 |
| Manganese, dissolved [as Mn] | monthly average | report only (mg/L) | Mar–May | 006 |
| Manganese, dissolved [as Mn] | monthly average | report only (mg/L) | Jun–Oct | 006 |
| Manganese, dissolved [as Mn] | monthly average | report only (mg/L) | Jan, Feb, Nov, Dec | 006 |
| Manganese, dissolved [as Mn] | daily maximum | report only (mg/L) | Mar–May | 006 |
| Manganese, dissolved [as Mn] | daily maximum | report only (mg/L) | Jun–Oct | 006 |
| Manganese, dissolved [as Mn] | daily maximum | report only (mg/L) | Jan, Feb, Nov, Dec | 006 |
| Manganese, dissolved [as Mn] | monthly average | report only (kg/d) | Mar–May | 006 |
| Manganese, dissolved [as Mn] | monthly average | report only (kg/d) | Jun–Oct | 006 |
| Manganese, dissolved [as Mn] | monthly average | report only (kg/d) | Jan, Feb, Nov, Dec | 006 |
| Manganese, dissolved [as Mn] | daily maximum | report only (kg/d) | Mar–May | 006 |
| Manganese, dissolved [as Mn] | daily maximum | report only (kg/d) | Jun–Oct | 006 |
| Manganese, dissolved [as Mn] | daily maximum | report only (kg/d) | Jan, Feb, Nov, Dec | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Chlorine, total residual | monthly average | ≤ .01 mg/L | Mar–May | 006 |
| Chlorine, total residual | monthly average | ≤ .01 mg/L | Jun–Oct | 006 |
| Chlorine, total residual | monthly average | ≤ .01 mg/L | Jan, Feb, Nov, Dec | 006 |
| Chlorine, total residual | daily maximum | ≤ .02 mg/L | Mar–May | 006 |
| Chlorine, total residual | daily maximum | ≤ .02 mg/L | Jun–Oct | 006 |
| Chlorine, total residual | daily maximum | ≤ .02 mg/L | Jan, Feb, Nov, Dec | 006 |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Manganese, dissolved [as Mn], daily maximum | 3.1 mg/L (Jun–Oct) | new | — | — |
| Manganese, dissolved [as Mn], daily maximum | 8.62 kg/d (Jun–Oct) | new | — | — |
| Manganese, dissolved [as Mn], daily maximum | 6.2 kg/d (Jan, Feb, Nov, Dec) | new | 3.75 kg/d (4 values) | 0.605× |
| Manganese, dissolved [as Mn], daily maximum | 4.68 mg/L (Jan, Feb, Nov, Dec) | new | 0.6135 mg/L (4 values) | 0.131× |
| Manganese, dissolved [as Mn], daily maximum | 6.72 kg/d (Mar–May) | new | 0.223 kg/d (3 values) | 0.0332× |
| Manganese, dissolved [as Mn], daily maximum | 4.08 mg/L (Mar–May) | new | 0.0351 mg/L (3 values) | 0.0086× |
| Manganese, dissolved [as Mn], monthly average | 1.53 mg/L (Jun–Oct) | new | — | — |
| Manganese, dissolved [as Mn], monthly average | 4.3 kg/d (Jun–Oct) | new | — | — |
| Manganese, dissolved [as Mn], monthly average | 2.33 mg/L (Jan, Feb, Nov, Dec) | new | 0.6135 mg/L (4 values) | 0.263× |
| Manganese, dissolved [as Mn], monthly average | 3.09 kg/d (Jan, Feb, Nov, Dec) | new | 1.412 kg/d (4 values) | 0.457× |
| Manganese, dissolved [as Mn], monthly average | 2.04 mg/L (Mar–May) | new | 0.0351 mg/L (3 values) | 0.0172× |
| Manganese, dissolved [as Mn], monthly average | 3.35 kg/d (Mar–May) | new | 0.098 kg/d (3 values) | 0.0293× |
Cited limits by parameter: Nebraska's rules and the federal ones.
Same industry: the 17 Water Supply permits in Nebraska.
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