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Middletown Town

Sewage treatment plant, Middletown, Virginia. NPDES permit VA0020982, in force until Sep 30, 2031. Last 12 months: over a limit 7 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Last report on file
August 2026
Oct 2024 – Sep 2025
6 values over a limit, 0 required values missing, 1 of 15 reports late

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

Period endingParameterReportedLimitOver by
January 2026Nitrogen, ammonia total [as N], maximum weekly average6.27≤ 5.4 mg/L16%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average> 26.22≤ 24 kg/d—
May 2026BOD, carbonaceous [5 day, 20 C], monthly average> 36.08≤ 16 mg/L—
May 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average62.96≤ 36 kg/d75%
May 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average89≤ 24 mg/L271%
May 2026Nitrogen, ammonia total [as N], monthly average7.41≤ 4 mg/L85%
May 2026Nitrogen, ammonia total [as N], maximum weekly average18.67≤ 5.4 mg/L246%

Limits in force (24)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5.7 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 68 kg/dall year
Solids, total suspendedmaximum weekly average≤ 102 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 1.6 mg/LJun–Dec
Nitrogen, ammonia total [as N]monthly average≤ 3.4 mg/LJan–May
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.2 mg/LJun–Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 4.6 mg/LJan–May
Flow, in conduit or thru treatment plantmonthly average≤ .6 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantmaximumreport only (MGD) (alert, not enforceable)all year
E. colimonthly geometric mean≤ 126 #/100mLall year
Nitrogen, Total As Nmonthly average≤ 5 mg/Lall year
Phosphorus, Total As Pmonthly average≤ .3 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 22 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 24 kg/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 45 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

New limits from Oct 1, 2030

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average1.6 mg/L (Jan–May)tighter2.88 mg/L (5 values)1.8×
Nitrogen, ammonia total [as N], maximum weekly average2.7 mg/L (Jan–May)tighter4 mg/L (5 values)1.48×
Nitrogen, ammonia total [as N], monthly average0.64 mg/L (Jun–Dec)tighter0.11 mg/L (4 values)0.172×
Nitrogen, ammonia total [as N], weekly average0.85 mg/L (Jun–Dec)tighter——

How strict are these limits?

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

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Your permit document is the final word. As JSON: /api/v1/permits/VA0020982 · MCP: https://passage-data.com/mcp