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Royall Farms Thurmont WWTP

Eating Places, Thurmont, Maryland. NPDES permit MD0058050 expired Aug 31, 2026; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (25 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

Limits in force (29)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year
Temperature, water deg. fahrenheitmaximum daily averagereport only (deg F)all year
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year
Temperature, water deg. fahrenheitmaximum daily averagereport only (deg F)all year
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year
Temperature, water deg. fahrenheitmaximum daily averagereport 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/LJan, Feb, Mar, Apr, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 20 mg/LMay–Sep
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 mg/LJan, Feb, Mar, Apr, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 30 mg/LMay–Sep
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 2.5 lb/dJan, Feb, Mar, Apr, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 1.7 lb/dMay–Sep
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 3.7 lb/dJan, Feb, Mar, Apr, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 2.5 lb/dMay–Sep
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≤ 2.5 lb/dall year
Solids, total suspendedmaximum weekly average≤ 3.7 lb/dall year
Nitrogen, Kjeldahl, total [as N]maximum monthly average≤ 15 mg/LMay–Sep
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 23 mg/LMay–Sep
Nitrogen, Kjeldahl, total [as N]maximum monthly average≤ 1.3 lb/dMay–Sep
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 1.9 lb/dMay–Sep
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

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/MD0058050 · MCP: https://passage-data.com/mcp