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

Friendsville WWTP

Sewage treatment plant, Friendsville, Maryland. NPDES permit MD0021083, in force until Oct 31, 2030. Last 12 months: over a limit 4 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (24 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
7 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
February 2026BOD, 5-day, 20 deg. C, maximum weekly average73 lb/d≤ 47 lb/d55%
March 2026BOD, 5-day, 20 deg. C, maximum monthly average46 lb/d≤ 31 lb/d48%
March 2026BOD, 5-day, 20 deg. C, maximum weekly average59 lb/d≤ 47 lb/d26%
March 2026E. coli, monthly geometric mean491 MPN/100mL≤ 126 MPN/100mL290%

Limits in force (24)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmaximumreport only (deg F)all year
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
Oxygen, dissolved [DO]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≤ 31 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 47 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≤ 31 lb/dall year
Solids, total suspendedmonthly totalreport only (lb/mo)all year
Solids, total suspendedmaximum weekly average≤ 47 lb/dall year
Solids, total suspendedannual maximum≤ 12000 lb/yrall 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
Chlorine, total residualmaximum≤ .1 mg/Lall year
E. colimonthly geometric mean≤ 126 MPN/100mLall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Flow, totalmonthly totalreport only (Mgal/mo)all year

How strict are these limits?

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

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/MD0021083 · MCP: https://passage-data.com/mcp