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Tappahannock Town

Sewage treatment plant, Tappahannock, Virginia. NPDES permit VA0071471, in force until May 31, 2028. 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 A1 yearly, form S1 twice a year
Renewal application due
Dec 3, 2027 · 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, 0 of 15 reports late

Limits in force (26)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademaximum daily averagereport only (deg C)all year
Oxygen, dissolved [DO]daily minimum≥ 5 mg/Lall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 25 mg/Lall year
Solids, total suspendedweekly average≤ 38 mg/Lall year
Solids, total suspendedmonthly average≤ 76 kg/dall year
Solids, total suspendedweekly average≤ 110 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly average≤ 3 mg/Lall year
Nitrogen, Kjeldahl, total [as N]weekly average≤ 4.5 mg/Lall year
Nitrogen, Kjeldahl, total [as N]monthly average≤ 9100 g/dall year
Nitrogen, Kjeldahl, total [as N]weekly average≤ 14000 g/dall year
Flow, in conduit or thru treatment plantmonthly average≤ .8 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD) (alert, not enforceable)all year
Nitrogen, Total As Nannual average≤ 4 mg/Lall year
Phosphorus, Total As Pannual average≤ .3 mg/Lall year
Enterococcigeometric mean≤ 35 #/100mLall year
Coliform, fecal generalgeometric mean≤ 200 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 38 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 76 kg/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 110 kg/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/VA0071471 · MCP: https://passage-data.com/mcp