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VDOC - Central Region

Sewage treatment plant, Baskerville, Virginia. NPDES permit VA0023345, in force until Sep 30, 2028. Last 12 months: no values over a limit, 7 of 19 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (13 values), form S1 twice a year, form T1 every 2 months
Renewal application due
Apr 3, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 5 of 20 reports late

Limits in force (23)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Oxygen, dissolved [DO]monthly minimum≥ 5 mg/Lall year
pHmonthly minimum≥ 6 SUall year
pHmonthly maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 7900 g/dall year
Solids, total suspendedmaximum weekly average≤ 12000 g/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 1.7 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 1.7 mg/Lall year
Zinc, total recoverablemonthly average≤ 87 ug/Lall year
Zinc, total recoverabledaily maximum≤ 87 ug/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ .07 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD) (alert, not enforceable)all year
E. coligeometric mean≤ 126 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 14 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 21 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 3700 g/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 5600 g/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all 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/VA0023345 · MCP: https://passage-data.com/mcp