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Augusta County Service Authority

Sewage treatment plant, Grottoes, Virginia. NPDES permit VA0027901, in force until Jun 30, 2031. Last 12 months: over a limit 3 times (last February 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: outfall 001 form M1 monthly (13 values), outfall 001 form A1 yearly, outfall 999 form A1 yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 13 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
February 2026Solids, total suspended, monthly average39.7≤ 30 mg/L32%
February 2026Solids, total suspended, monthly average5≤ 4.5 kg/d11%
February 2026Solids, total suspended, maximum weekly average48.6≤ 45 mg/L8%

Limits in force (18)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 4.5 kg/dall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 6.8 kg/dall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 4.5 kg/dall year001
Solids, total suspendedmaximum weekly average≤ 6.8 kg/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly average≤ .04 MGD (alert, not enforceable)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD) (alert, not enforceable)all year001
BOD, percent removal [total]monthly average minimum≥ 85 %all year001
E. colimonthly average≤ 126 #/100mLall year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Phosphorus, Total As Pmaximum≤ 5177 lb/yrall year999

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/VA0027901 · MCP: https://passage-data.com/mcp