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Shenandoah National Park

Federal facility (Sewerage Systems), Skyline Drive, Virginia. NPDES permit VA0024406, in force until Nov 30, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (20 values), form S1 twice a year
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (26)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6.6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 5.7 kg/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 8.5 kg/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 22 mg/Lall year
Solids, total suspendedmonthly average≤ 2.8 kg/dall year
Solids, total suspendedmaximum weekly average≤ 4.2 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 4.1 mg/LJun–Nov
Nitrogen, ammonia total [as N]monthly average≤ 5.6 mg/LJan, Feb, Mar, Apr, May, Dec
Nitrogen, ammonia total [as N]weekly average≤ 5.9 mg/LJun–Nov
Nitrogen, ammonia total [as N]weekly average≤ 8.1 mg/LJan, Feb, Mar, Apr, May, Dec
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year
Hardness, total [as CaCO3]maximum weekly averagereport only (mg/L)all year
Copper, total [as Cu]monthly average≤ 46 ug/Lall year
Copper, total [as Cu]weekly average≤ 46 ug/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ .05 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantmaximumreport only (MGD) (alert, not enforceable)all year
BOD, percent removal [total]monthly average minimum≥ 85 %all year
E. colimonthly geometric mean≤ 126 #/100mLall year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

How strict are these limits?

Cited limits by parameter: Virginia's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/VA0024406 · MCP: https://passage-data.com/mcp