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Industrial or other facility, Underwood, North Dakota. NPDES permit ND0026930, in force until Sep 30, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Dry days preceding precipitation event | total | report only (d) | all year | 003 |
| Rainfall duration | total | report only (hr) | all year | 003 |
| pH | minimum | report only (SU) | all year | 003 |
| pH | maximum | report only (SU) | all year | 003 |
| Solids, total suspended | daily minimum | report only (mg/L) | all year | 003 |
| Solids, total suspended | daily average | report only (mg/L) | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Oil & Grease | daily minimum | report only (mg/L) | all year | 003 |
| Oil & Grease | daily average | report only (mg/L) | all year | 003 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 003 |
| Rainfall | total | report only (in) | all year | 003 |
| Oil and grease visual | total | report only (N=0;Y=1) | all year | 003 |
| Dry days preceding precipitation event | total | report only (d) | all year | 005 |
| Rainfall duration | total | report only (hr) | all year | 005 |
| pH | minimum | report only (SU) | all year | 005 |
| pH | maximum | report only (SU) | all year | 005 |
| Solids, total suspended | daily minimum | report only (mg/L) | all year | 005 |
| Solids, total suspended | daily average | report only (mg/L) | all year | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 005 |
| Oil & Grease | daily minimum | report only (mg/L) | all year | 005 |
| Oil & Grease | daily average | report only (mg/L) | all year | 005 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 005 |
| Rainfall | total | report only (in) | all year | 005 |
| Oil and grease visual | total | report only (N=0;Y=1) | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | CWI |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | CWI |
| Cooling Water Intake Inspection | total | report only (N=0;Y=1) | all year | CWI |
Cited limits by parameter: North Dakota's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/ND0026930 · MCP: https://passage-data.com/mcp