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

Northampton County Public Schools

Elementary And Secondary Schools, Machipongo, Virginia. NPDES permit VA0023817 expired Sep 30, 2022; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: outfall 001 form M1 monthly (24 values), outfall 101 form Q1 quarterly (5 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 16 reports late

Limits in force (29)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademinimumreport only (deg C)all year001
Temperature, water deg. centigrademaximumreport only (deg C)all year001
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 2.4 kg/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 3.5 kg/dall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 2.4 kg/dall year001
Solids, total suspendedweekly average≤ 3.5 kg/dall year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly averagereport only (kg/d)all year001
Nitrogen, ammonia total [as N]weekly averagereport only (kg/d)all year001
Flow, in conduit or thru treatment plantmonthly average≤ .0208 MGD (alert, not enforceable)all year001
Flow, in conduit or thru treatment plantmaximumreport only (MGD) (alert, not enforceable)all year001
Chlorine, total residualmonthly average≤ .008 mg/Lall year001
Chlorine, total residualweekly average≤ .01 mg/Lall year001
Chlorine, total residualminimum≥ .6 mg/Lall year001
E. colimonthly average≤ 126 #/100mLall year001
Coliform, fecal generalgeometric mean≤ 200 #/100mLall year001
BOD, 5-day, 20 deg. Cmaximumreport only (mg/L)all year101
pHminimum≥ 6 SUall year101
pHmaximum≤ 9 SUall year101
Solids, total suspendedmaximumreport only (mg/L)all year101
Nitrogen, ammonia total [as N]maximumreport only (mg/L)all year101

How strict are these limits?

Cited limits by parameter: Virginia's rules and the federal ones.

Same industry: the 22 Educational Services permits in Virginia.

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/VA0023817 · MCP: https://passage-data.com/mcp