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Sewage treatment plant, Alleghany County, Maryland. NPDES permit MD0067407 expired Oct 31, 2022; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | quarterly average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | quarterly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | quarterly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | quarterly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | quarterly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | quarterly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | quarterly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | quarterly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | quarterly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | quarterly average | report only (mg/L) | all year | 001 |
| E. coli | quarterly average | report only (MPN/100mL) | Mar, Jun, Sep, Dec | 001 |
| E. coli | quarterly average | report only (MPN/100mL) | Mar, Jun, Sep, Dec | 001 |
| Oxygen, dissolved [DO] | quarterly average | report only (mL/L) | all year | 002 |
| Oxygen, dissolved [DO] | quarterly average | report only (mL/L) | all year | 002 |
| Solids, total suspended | quarterly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | quarterly average | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | quarterly average | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | quarterly average | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | quarterly average | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | quarterly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | quarterly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | quarterly average | report only (mg/L) | all year | 002 |
| E. coli | quarterly average | report only (MPN/100mL) | all year | 002 |
| E. coli | quarterly average | report only (MPN/100mL) | all year | 002 |
| BOD, 5-day, 20 deg. C | quarterly average | report only (mg/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | quarterly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | quarterly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | quarterly average | report only (mg/L) | all year | 003 |
| Nitrogen, total [as N] | quarterly average | report only (mg/L) | all year | 003 |
| Nitrogen, total [as N] | quarterly average | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | quarterly average | report only (mg/L) | all year | 003 |
| Nitrogen, ammonia total [as N] | quarterly average | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | quarterly average | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | quarterly average | report only (mg/L) | all year | 003 |
| E. coli | weekly average | report only (MPN/100mL) | all year | 003 |
| E. coli | weekly average | report only (MPN/100mL) | all year | 003 |
Cited limits by parameter: Maryland'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/MD0067407 · MCP: https://passage-data.com/mcp