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Sewerage Systems, Stephens City, Virginia. NPDES permit VA0061964, in force until Nov 30, 2028. Last 12 months: no values over a limit, 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | minimum | ≥ 6.7 mg/L | all year |
| pH | minimum | ≥ 6.5 SU | all year |
| pH | maximum | ≤ 7.5 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 4.5 kg/d | all year |
| Solids, total suspended | weekly average | ≤ 6.8 kg/d | all year |
| Solids, total suspended | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 3.5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 2 mg/L | May–Oct |
| Flow, in conduit or thru treatment plant | monthly average | ≤ .04 MGD (alert, not enforceable) | all year |
| Flow, in conduit or thru treatment plant | maximum | report only (MGD) (alert, not enforceable) | all year |
| Chlorine, total residual | monthly average | ≤ .008 mg/L | all year |
| Chlorine, total residual | maximum weekly average | ≤ .0098 mg/L | all year |
| Chlorine, total residual | minimum | ≥ .6 mg/L | all year |
| E. coli | geometric mean | ≤ 126 #/100mL | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 7 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 10 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 1 kg/d | all year |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 1.5 kg/d | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year |
| BOD, carb-5 day, 20 deg C, percent removal | monthly average minimum | ≥ 85 % | all year |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year |
Cited limits by parameter: Virginia'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/VA0061964 · MCP: https://passage-data.com/mcp