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Electric Services, major discharger, Campbell, Missouri. NPDES permit MO0121827, in force until Jul 31, 2030. Last 12 months: over a limit 3 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Solids, total suspended, monthly average | 57 | ≤ 30 mg/L | 90% |
| June 2026 | Solids, total suspended, monthly average | 57 | ≤ 30 mg/L | 90% |
| July 2026 | Solids, total suspended, monthly average | 37.5 | ≤ 30 mg/L | 25% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Zinc, total recoverable | daily maximum | ≤ 1000 ug/L | all year | 001 |
| Zinc, total recoverable | monthly average | ≤ 1000 ug/L | all year | 001 |
| Chromium, total recoverable | daily maximum | ≤ 200 ug/L | all year | 001 |
| Chromium, total recoverable | monthly average | ≤ 200 ug/L | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Chlorine, free available | daily maximum | ≤ 500 ug/L | all year | 001 |
| Chlorine, free available | monthly average | ≤ 200 ug/L | all year | 001 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 003 |
| Temperature, water deg. fahrenheit | monthly average | ≤ 90 deg F | all year | 003 |
| pH | minimum | ≥ 6.5 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 003 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 003 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 15 mg/L | all year | 003 |
| Oil and grease [soxhlet extr.] tot. | monthly average | ≤ 10 mg/L | all year | 003 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 003 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 003 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 003 |
| Boron, total recoverable | daily maximum | ≤ 3285 ug/L | all year | 003 |
| Boron, total recoverable | monthly average | ≤ 1638 ug/L | all year | 003 |
| Chloride | daily maximum | report only (mg/L) | all year | 003 |
| Chloride | monthly average | report only (mg/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Chlorine, total residual | daily maximum | ≤ 17 ug/L | all year | 003 |
| Chlorine, total residual | monthly average | ≤ 8 ug/L | all year | 003 |
| Toxicity [chronic], Ceriodaphnia dubia | daily maximum | ≤ 1.6 toxic | all year | 003 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | daily maximum | ≤ 1.6 toxic | all year | 003 |
| Chlorides + Sulfates | daily maximum | report only (mg/L) | all year | 003 |
| Chlorides + Sulfates | monthly average | report only (mg/L) | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 005 |
| pH | maximum | ≤ 9 SU | all year | 005 |
| Zinc, total recoverable | daily maximum | ≤ 1000 ug/L | all year | 005 |
| Zinc, total recoverable | monthly average | ≤ 1000 ug/L | all year | 005 |
| Chromium, total recoverable | daily maximum | ≤ 200 ug/L | all year | 005 |
| Chromium, total recoverable | monthly average | ≤ 200 ug/L | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 005 |
| Chlorine, free available | daily maximum | ≤ 500 ug/L | all year | 005 |
| Chlorine, free available | monthly average | ≤ 200 ug/L | all year | 005 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 007 |
| Temperature, water deg. fahrenheit | monthly average | ≤ 90 deg F | all year | 007 |
| pH | minimum | ≥ 6.5 SU | all year | 007 |
| pH | maximum | ≤ 9 SU | all year | 007 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 007 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 007 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 15 mg/L | all year | 007 |
| Oil and grease [soxhlet extr.] tot. | monthly average | ≤ 10 mg/L | all year | 007 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 007 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 007 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 007 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 007 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 007 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 007 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 007 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 007 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 007 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 007 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 007 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 007 |
| Boron, total recoverable | daily maximum | ≤ 3285 ug/L | all year | 007 |
| Boron, total recoverable | monthly average | ≤ 1638 ug/L | all year | 007 |
| Chloride | daily maximum | report only (mg/L) | all year | 007 |
| Chloride | monthly average | report only (mg/L) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Chlorine, total residual | daily maximum | ≤ 17 ug/L | all year | 007 |
| Chlorine, total residual | monthly average | ≤ 8 ug/L | all year | 007 |
| Toxicity [chronic], Ceriodaphnia dubia | daily maximum | ≤ 1.6 toxic | all year | 007 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | daily maximum | ≤ 1.6 toxic | all year | 007 |
| Chlorides + Sulfates | daily maximum | report only (mg/L) | all year | 007 |
| Chlorides + Sulfates | monthly average | report only (mg/L) | all year | 007 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 008 |
| Temperature, water deg. fahrenheit | monthly average | ≤ 90 deg F | all year | 008 |
| pH | minimum | ≥ 6.5 SU | all year | 008 |
| pH | maximum | ≤ 9 SU | all year | 008 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 008 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 008 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 15 mg/L | all year | 008 |
| Oil and grease [soxhlet extr.] tot. | monthly average | ≤ 10 mg/L | all year | 008 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 008 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.75 mg/L | Jan, Feb, Mar, Oct, Nov, Dec | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.25 mg/L | Apr–Sep | 008 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.5 mg/L | Jan, Feb, Mar, Oct, Nov, Dec | 008 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.5 mg/L | Apr–Sep | 008 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 008 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 008 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 008 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 008 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 008 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 008 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 008 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 008 |
| Boron, total recoverable | daily maximum | ≤ 117.04 mg/L | all year | 008 |
| Boron, total recoverable | monthly average | ≤ 58.37 mg/L | all year | 008 |
| Chloride | daily maximum | ≤ 3130 mg/L | all year | 008 |
| Chloride | monthly average | ≤ 1565 mg/L | all year | 008 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 008 |
| Chlorine, total residual | daily maximum | ≤ 75 ug/L | all year | 008 |
| Chlorine, total residual | monthly average | ≤ 50 ug/L | all year | 008 |
| Toxicity [chronic], Ceriodaphnia dubia | daily maximum | report only (toxic) | all year | 008 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | daily maximum | report only (toxic) | all year | 008 |
| Chlorides + Sulfates | daily maximum | ≤ 4462 mg/L | all year | 008 |
| Chlorides + Sulfates | monthly average | ≤ 2224 mg/L | all year | 008 |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Chloride, daily maximum outfall 003 | 3130 mg/L | new | 500.5 mg/L (12 values) | 0.16× |
| Chloride, monthly average outfall 003 | 1565 mg/L | new | 500.5 mg/L (12 values) | 0.32× |
| Nitrogen, ammonia total [as N], daily maximum outfall 003 | 2.25 mg/L (Apr–Sep) | new | 0.1 mg/L (6 values, 4 below detection) | — |
| Nitrogen, ammonia total [as N], daily maximum outfall 003 | 3.75 mg/L (Jan, Feb, Mar, Oct, Nov, Dec) | new | 0.1 mg/L (6 values, 5 below detection) | — |
| Nitrogen, ammonia total [as N], monthly average outfall 003 | 1.5 mg/L (Apr–Sep) | new | 0.12 mg/L (6 values, 4 below detection) | — |
| Nitrogen, ammonia total [as N], monthly average outfall 003 | 2.5 mg/L (Jan, Feb, Mar, Oct, Nov, Dec) | new | 0.1 mg/L (6 values, 5 below detection) | — |
| Chloride, daily maximum outfall 007 | 3130 mg/L | new | 489.5 mg/L (12 values) | 0.156× |
| Chloride, monthly average outfall 007 | 1565 mg/L | new | 489.5 mg/L (12 values) | 0.313× |
| Nitrogen, ammonia total [as N], daily maximum outfall 007 | 3.75 mg/L (Jan, Feb, Mar, Oct, Nov, Dec) | new | 0.1 mg/L (6 values, 4 below detection) | — |
| Nitrogen, ammonia total [as N], daily maximum outfall 007 | 2.25 mg/L (Apr–Sep) | new | 0.105 mg/L (6 values, 3 below detection) | — |
| Nitrogen, ammonia total [as N], monthly average outfall 007 | 2.5 mg/L (Jan, Feb, Mar, Oct, Nov, Dec) | new | 0.1 mg/L (6 values, 3 below detection) | — |
| Nitrogen, ammonia total [as N], monthly average outfall 007 | 1.5 mg/L (Apr–Sep) | new | 0.105 mg/L (6 values, 3 below detection) | — |
Cited limits by parameter: Missouri's rules and the federal ones.
Same industry: the 29 Electric Services permits in Missouri.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MO0121827 · MCP: https://passage-data.com/mcp