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Sanitary Services, Polson, Montana. NPDES permit MT0030805, 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 |
|---|---|---|---|---|
| pH | minimum | report only (SU) | all year | 002 |
| pH | maximum | report only (SU) | all year | 002 |
| Toluene | 30-day average | report only (ug/L) | all year | 002 |
| Toluene | daily maximum | report only (ug/L) | all year | 002 |
| Benzene | 30-day average | ≤ .58 ug/L | all year | 002 |
| Benzene | daily maximum | ≤ 5 ug/L | all year | 002 |
| Ethylbenzene | 30-day average | report only (ug/L) | all year | 002 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | 002 |
| BTEX | 30-day average | report only (ug/L) | all year | 002 |
| BTEX | daily maximum | report only (ug/L) | all year | 002 |
| Total Petroleum Hydrocarbons - Gasoline | 30-day average | report only (mg/L) | all year | 002 |
| Total Petroleum Hydrocarbons - Gasoline | daily maximum | ≤ 10 mg/L | all year | 002 |
| Xylenes [total], dry weight | 30-day average | report only (ug/L) | all year | 002 |
| Xylenes [total], dry weight | daily maximum | report only (ug/L) | all year | 002 |
| Flow, total | 30-day average | report only (gal/min) | all year | 002 |
| Flow, total | daily maximum | report only (gal/min) | all year | 002 |
| pH | minimum | report only (SU) | all year | 003 |
| pH | maximum | report only (SU) | all year | 003 |
| Toluene | 30-day average | report only (ug/L) | all year | 003 |
| Toluene | daily maximum | report only (ug/L) | all year | 003 |
| Benzene | 30-day average | ≤ .58 ug/L | all year | 003 |
| Benzene | daily maximum | ≤ 5 ug/L | all year | 003 |
| Ethylbenzene | 30-day average | report only (ug/L) | all year | 003 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | 003 |
| BTEX | 30-day average | report only (ug/L) | all year | 003 |
| BTEX | daily maximum | report only (ug/L) | all year | 003 |
| Total Petroleum Hydrocarbons - Gasoline | 30-day average | report only (mg/L) | all year | 003 |
| Total Petroleum Hydrocarbons - Gasoline | daily maximum | ≤ 10 mg/L | all year | 003 |
| Xylenes [total], dry weight | 30-day average | report only (ug/L) | all year | 003 |
| Xylenes [total], dry weight | daily maximum | report only (ug/L) | all year | 003 |
| Flow, total | 30-day average | report only (gal/min) | all year | 003 |
| Flow, total | daily maximum | report only (gal/min) | all year | 003 |
| pH | minimum | report only (SU) | all year | 004 |
| pH | maximum | report only (SU) | all year | 004 |
| Toluene | 30-day average | report only (ug/L) | all year | 004 |
| Toluene | daily maximum | report only (ug/L) | all year | 004 |
| Benzene | 30-day average | ≤ .58 ug/L | all year | 004 |
| Benzene | daily maximum | ≤ 5 ug/L | all year | 004 |
| Ethylbenzene | 30-day average | report only (ug/L) | all year | 004 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | 004 |
| BTEX | 30-day average | report only (ug/L) | all year | 004 |
| BTEX | daily maximum | report only (ug/L) | all year | 004 |
| Total Petroleum Hydrocarbons - Gasoline | 30-day average | report only (mg/L) | all year | 004 |
| Total Petroleum Hydrocarbons - Gasoline | daily maximum | ≤ 10 mg/L | all year | 004 |
| Xylenes [total], dry weight | 30-day average | report only (ug/L) | all year | 004 |
| Xylenes [total], dry weight | daily maximum | report only (ug/L) | all year | 004 |
| Flow, total | 30-day average | report only (gal/min) | all year | 004 |
| Flow, total | daily maximum | report only (gal/min) | all year | 004 |
| pH | minimum | report only (SU) | all year | 005 |
| pH | maximum | report only (SU) | all year | 005 |
| Toluene | 30-day average | report only (ug/L) | all year | 005 |
| Toluene | daily maximum | report only (ug/L) | all year | 005 |
| Benzene | 30-day average | ≤ .58 ug/L | all year | 005 |
| Benzene | daily maximum | ≤ 5 ug/L | all year | 005 |
| Ethylbenzene | 30-day average | report only (ug/L) | all year | 005 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | 005 |
| BTEX | 30-day average | report only (ug/L) | all year | 005 |
| BTEX | daily maximum | report only (ug/L) | all year | 005 |
| Total Petroleum Hydrocarbons - Gasoline | 30-day average | report only (mg/L) | all year | 005 |
| Total Petroleum Hydrocarbons - Gasoline | daily maximum | ≤ 10 mg/L | all year | 005 |
| Xylenes [total], dry weight | 30-day average | report only (ug/L) | all year | 005 |
| Xylenes [total], dry weight | daily maximum | report only (ug/L) | all year | 005 |
| Flow, total | 30-day average | report only (gal/min) | all year | 005 |
| Flow, total | daily maximum | report only (gal/min) | all year | 005 |
| pH | minimum | report only (SU) | all year | 006 |
| pH | maximum | report only (SU) | all year | 006 |
| Toluene | 30-day average | report only (ug/L) | all year | 006 |
| Toluene | daily maximum | report only (ug/L) | all year | 006 |
| Benzene | 30-day average | ≤ .58 ug/L | all year | 006 |
| Benzene | daily maximum | ≤ 5 ug/L | all year | 006 |
| Ethylbenzene | 30-day average | report only (ug/L) | all year | 006 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | 006 |
| BTEX | 30-day average | report only (ug/L) | all year | 006 |
| BTEX | daily maximum | report only (ug/L) | all year | 006 |
| Total Petroleum Hydrocarbons - Gasoline | 30-day average | report only (mg/L) | all year | 006 |
| Total Petroleum Hydrocarbons - Gasoline | daily maximum | ≤ 10 mg/L | all year | 006 |
| Xylenes [total], dry weight | 30-day average | report only (ug/L) | all year | 006 |
| Xylenes [total], dry weight | daily maximum | report only (ug/L) | all year | 006 |
| Flow, total | 30-day average | report only (gal/min) | all year | 006 |
| Flow, total | daily maximum | report only (gal/min) | all year | 006 |
Cited limits by parameter: Montana'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/MT0030805 · MCP: https://passage-data.com/mcp