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Garrett County Board of Education

Sewage treatment plant, Accident, Maryland. NPDES permit MD0024449 expired Jan 31, 2026; its limits still apply. Last 12 months: over a limit 7 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (24 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
January 2026E. coli, maximum monthly geometric mean368 MPN/100mL≤ 126 MPN/100mL192%
February 2026Nitrogen, ammonia total [as N], maximum monthly average3 mg/L≤ 1.3 mg/L131%
February 2026Nitrogen, ammonia total [as N], maximum daily average11.9 mg/L≤ 4.3 mg/L177%
July 2026Nitrogen, ammonia total [as N], maximum monthly average2.8 mg/L≤ 1.3 mg/L115%
July 2026Nitrogen, ammonia total [as N], maximum daily average11.1 mg/L≤ 4.3 mg/L158%
August 2026BOD, 5-day, 20 deg. C, maximum weekly average73.7 mg/L≤ 45 mg/L64%
August 2026Solids, total suspended, maximum weekly average82 mg/L≤ 45 mg/L82%

Limits in force (24)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmaximumreport only (deg F)all year
Temperature, water deg. fahrenheitmaximumreport only (deg F)all year
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 12.5 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 18.8 lb/dall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmaximum monthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmaximum monthly average≤ 12.5 lb/dall year
Solids, total suspendedmonthly totalreport only (lb/mo)all year
Solids, total suspendedmaximum weekly average≤ 18.8 lb/dall year
Solids, total suspendedcumulative total≤ 8200 lb/yrall year
Nitrogen, ammonia total [as N]maximum monthly average≤ 1.3 mg/Lall year
Nitrogen, ammonia total [as N]maximum daily average≤ 4.3 mg/Lall year
Nitrogen, ammonia total [as N]maximum monthly average≤ .54 lb/dall year
Nitrogen, ammonia total [as N]maximum daily average≤ 1.79 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
E. colimaximum monthly geometric mean≤ 126 MPN/100mLall year
Flow, totaltotalreport only (Mgal/mo)all year

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MD0024449 · MCP: https://passage-data.com/mcp