Passage Data · Check a report · Use it from your AI

Hanover County

Sewage treatment plant, major discharger, Mechanicsville, Virginia. NPDES permit VA0089915, in force until Dec 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 (22 values), form A1 yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 13 reports late

Limits in force (31)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademinimum weekly averagereport only (deg C)all year
Temperature, water deg. centigrademaximum 30-day averagereport only (deg C)all year
Oxygen, dissolved [DO]minimum≥ 6.5 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 10 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 15 mg/Lall year
Solids, total suspendedmonthly average≤ 260 kg/dall year
Solids, total suspendedmaximum weekly average≤ 400 kg/dall year
Solids, total suspendedmonthly average minimumreport only (mg/L)all year
Solids, total suspendedmaximum 30-day averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]minimum weekly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]maximum 30-day averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly average≤ 3 mg/Lall year
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 4.5 mg/Lall year
Nitrogen, Kjeldahl, total [as N]monthly average≤ 79 kg/dall year
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 120 kg/dall year
Flow, in conduit or thru treatment plantmonthly average≤ 7 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD) (alert, not enforceable)all year
E. coligeometric mean≤ 126 #/100mLall year
Nitrogen, Total As Nannual average≤ 8 mg/Lall year
Phosphorus, Total As Pannual average≤ 1.2 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 260 kg/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 400 kg/dall year
BOD, carbonaceous [5 day, 20 C]monthly average minimumreport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]maximum 30-day averagereport only (mg/L)all year
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all year
TU Static Renewal 7-Day Chronic Ceriodaphnia dubiamaximum≤ 8.33 tox chronicall year
TU Static Renewal 7-Day Chronic Pimphales promelasmaximum≤ 8.33 tox chronicall 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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/VA0089915 · MCP: https://passage-data.com/mcp