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Sewerage Systems, Mouth Of Wilson, Virginia. NPDES permit VA0065714, in force until Jul 31, 2030. Last 12 months: over a limit 2 times (last February 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (17 values), form A1 yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
7 values over a limit, 0 required values missing, 2 of 12 reports late

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

Period endingParameterReportedLimitOver by
February 2026BOD, 5-day, 20 deg. C, monthly average37.86≤ 30 mg/L26%
February 2026BOD, 5-day, 20 deg. C, weekly average51.3≤ 45 mg/L14%

Limits in force (23)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 1.2 kg/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 1.8 kg/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 1.2 kg/dall year
Solids, total suspendedweekly average≤ 1.8 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 21 mg/LJan–May
Nitrogen, ammonia total [as N]monthly average≤ 7.8 mg/LJun–Dec
Nitrogen, ammonia total [as N]weekly average≤ 21 mg/LJan–May
Nitrogen, ammonia total [as N]weekly average≤ 7.8 mg/LJun–Dec
Flow, in conduit or thru treatment plantmonthly average≤ .0105 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantmaximumreport only (MGD) (alert, not enforceable)all year
Chlorine, total residualmonthly average≤ .08 mg/Lall year
Chlorine, total residualweekly average≤ .1 mg/Lall year
Chlorine, total residualinstantaneous minimum≥ .6 mg/Lall year
BOD, percent removal [total]monthly 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/VA0065714 · MCP: https://passage-data.com/mcp