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Grottoes Town

Sewage treatment plant, Grottoes, Virginia. NPDES permit VA0065374, in force until Sep 30, 2030. Last 12 months: no values over a limit, 2 required values missing, 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (15 values), form A1 yearly, form S1 twice a year
Last report on file
August 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 0 of 13 reports late

Limits in force (19)

ParameterStatisticLimitMonths
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≤ 45 kg/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 68 kg/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 45 kg/dall year
Solids, total suspendedmaximum weekly average≤ 68 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ .4 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
Phosphorus, Total As Pmonthly average≤ 2.5 mg/Lall year
Phosphorus, Total As Pmaximum≤ 1381.5 kg/yrall 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/VA0065374 · MCP: https://passage-data.com/mcp