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Rockingham County Public Schools

Sewage treatment plant, Linville, Virginia. NPDES permit VA0093173, in force until Mar 31, 2028. Last 12 months: over a limit 3 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (18 values), form A1 yearly
Renewal application due
Oct 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 0 of 13 reports late

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

Period endingParameterReportedLimitOver by
June 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average17≤ 15 mg/L13%
July 2026BOD, carbonaceous [5 day, 20 C], monthly average13≤ 10 mg/L30%
July 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average33≤ 15 mg/L120%

Limits in force (22)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9.5 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ .47 kg/dall year
Solids, total suspendedmaximum weekly average≤ .71 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 2 mg/Lall year
Nitrogen, Kjeldahl, total [as N]monthly average≤ 3 mg/Lall year
Nitrogen, Kjeldahl, total [as N]daily maximum≤ 4.5 mg/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ .00415 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD) (alert, not enforceable)all year
E. coligeometric mean≤ 126 #/100mLall 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≤ .16 kg/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ .24 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/VA0093173 · MCP: https://passage-data.com/mcp