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

Town of Boonsboro

Sewage treatment plant, Boonsboro, Maryland. NPDES permit MD0020231, in force until Dec 31, 2030. Last 12 months: no values over a limit, 4 of 19 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form B monthly (34 values), outfall TRAD form E monthly (7 values), outfall 001 form B2 yearly, outfall 101 form A yearly
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 (49)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 133 lb/dall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 199 lb/dall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 8.5 SUall year001
Solids, total suspendedmaximum monthly average≤ 30 mg/Lall year001
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year001
Solids, total suspendedmaximum monthly average≤ 133 lb/dall year001
Solids, total suspendedmaximum weekly average≤ 199 lb/dall year001
Solids, total suspendedmonthly totalreport only (lb/mo)all year001
Solids, total suspendedannual total≤ 48424 lb/yrall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]annual maximum≤ 6100 lb/yrall year001
Nitrogen, total [as N]monthly totalreport only (lb/mo)all year001
Nitrogen, total [as N]annual totalreport only (lb/yr)all year001
Nitrogen, organic total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]maximum monthly average≤ 1.7 mg/LMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 3.1 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum daily average≤ 6.9 mg/LMay–Oct001
Nitrogen, ammonia total [as N]maximum daily average≤ 6.4 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum monthly average≤ 7.5 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 13.7 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum daily average≤ 30.5 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum daily average≤ 28.3 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]annual maximum≤ 457 lb/yrall year001
Phosphorus, total [as P]monthly totalreport only (lb/mo)all year001
Phosphorus, total [as P]annual totalreport only (lb/yr)all year001
Phosphate, ortho [as P]monthly averagereport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmaximum≤ .013 mg/Lall year001
E. colimaximum monthly geometric mean≤ 126 MPN/100mLall year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Flow, totaltotalreport only (Mgal/mo)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year101
Solids, total suspendedmonthly averagereport only (mg/L)all year101
Solids, total suspendedmonthly totalreport only (lb/yr)all yearTRAD
Solids, total suspendedmonthly totalreport only (lb/yr)all yearTRAD
Nitrogen, total [as N]monthly totalreport only (lb/yr)all yearTRAD
Nitrogen, total [as N]monthly totalreport only (lb/yr)all yearTRAD
Phosphorus, total [as P]monthly totalreport only (lb/yr)all yearTRAD
Phosphorus, total [as P]monthly totalreport only (lb/yr)all yearTRAD
Flowyear-to-date totalreport only (Mgal/yr)all yearTRAD

New limits from Jan 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], maximum monthly average4.8 lb/d (May–Oct)tighter0 lb/d (5 values)0×
Nitrogen, ammonia total [as N], maximum monthly average1.1 mg/L (May–Oct)tighter0 mg/L (5 values)0×
Nitrogen, ammonia total [as N], maximum monthly average2.1 mg/L (Jan, Feb, Mar, Apr, Nov, Dec)tighter0.05 mg/L (6 values)0.0238×
Nitrogen, ammonia total [as N], maximum monthly average9.3 lb/d (Jan, Feb, Mar, Apr, Nov, Dec)tighter0.1 lb/d (6 values)0.0108×
Nitrogen, ammonia total [as N], maximum daily average5.9 mg/L (May–Oct)tighter0 mg/L (5 values)0×
Nitrogen, ammonia total [as N], maximum daily average26.1 lb/d (May–Oct)tighter0 lb/d (5 values)0×

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/MD0020231 · MCP: https://passage-data.com/mcp