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Sewage treatment plant, major discharger, Madison, South Dakota. NPDES permit SD0020010, in force until Jun 30, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Cyanide, weak acid, dissociable | value | report only (ug/L) | all year |
| Cyanide, total [as CN] | value | report only (ug/L) | all year |
| Hardness, total [as CaCO3] | value | report only (mg/L) | all year |
| Arsenic, total recoverable | value | report only (ug/L) | all year |
| Selenium, total recoverable | value | report only (ug/L) | all year |
| Thallium, total recoverable | value | report only (ug/L) | all year |
| Beryllium, total recoverable [as Be] | value | report only (ug/L) | all year |
| Nickel, total recoverable | value | report only (ug/L) | all year |
| Silver total recoverable | value | report only (ug/L) | all year |
| Zinc, total recoverable | value | report only (ug/L) | all year |
| Aluminum, total recoverable | value | report only (ug/L) | all year |
| Cadmium, total recoverable | value | report only (ug/L) | all year |
| Lead, total recoverable | value | report only (ug/L) | all year |
| Chromium, total recoverable | value | report only (ug/L) | all year |
| Copper, total recoverable | value | report only (ug/L) | all year |
| Molybdenum, total recoverable | value | report only (ug/L) | all year |
| Antimony, total recoverable | value | report only (ug/L) | all year |
| Phenols | value | report only (ug/L) | all year |
| Mercury, total recoverable | value | report only (ug/L) | all year |
Cited limits by parameter: South Dakota's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/SD0020010 · MCP: https://passage-data.com/mcp