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Emmitsburg WWTP

Sewage treatment plant, Emmitsburg, Maryland. NPDES permit MD0020257, in force until Feb 28, 2030. Last 12 months: over a limit 13 times (last August 2026), 5 required values missing, 2 of 34 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (30 values), outfall 101 form A monthly (2 values), outfall TRAD form E monthly (7 values), outfall 001 form B yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 26 reports late

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

All 13 values over a limit
Period endingParameterReportedLimitOver by
January 2026Nitrogen, ammonia total [as N], daily maximum12.1 mg/L≤ 12 mg/L1%
January 2026Nitrogen, ammonia total [as N], daily maximum12.1 mg/L≤ 12 mg/L1%
February 2026BOD, 5-day, 20 deg. C, maximum monthly average32.79 mg/L≤ 30 mg/L9%
February 2026BOD, 5-day, 20 deg. C, maximum monthly average32.79 mg/L≤ 30 mg/L9%
February 2026BOD, 5-day, 20 deg. C, maximum weekly average65 mg/L≤ 45 mg/L44%
February 2026BOD, 5-day, 20 deg. C, maximum weekly average65 mg/L≤ 45 mg/L44%
February 2026Nitrogen, ammonia total [as N], daily maximum25.1 mg/L≤ 12 mg/L109%
February 2026Nitrogen, ammonia total [as N], daily maximum25.1 mg/L≤ 12 mg/L109%
February 2026Nitrogen, ammonia total [as N], maximum monthly average13.7 mg/L≤ 9 mg/L52%
February 2026Nitrogen, ammonia total [as N], maximum monthly average13.7 mg/L≤ 9 mg/L52%
August 2026BOD, 5-day, 20 deg. C, maximum monthly average23.8 mg/L≤ 12 mg/L98%
August 2026BOD, 5-day, 20 deg. C, maximum weekly average34 mg/L≤ 18 mg/L89%
August 2026Phosphorus, total [as P], cumulative total745 lb/yr≤ 685 lb/yr9%

Limits in force (61)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/LJan, Feb, Mar, Apr, Oct, Nov, Dec001
Oxygen, dissolved [DO]instantaneous minimum≥ 7 mg/LMay–Sep001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 12 mg/LMay–Sep001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 30 mg/LJan, Feb, Mar, Apr, Oct, Nov, Dec001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 18 mg/LMay–Sep001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 mg/LJan, Feb, Mar, Apr, Oct, Nov, Dec001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 75 lb/dMay–Sep001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 188 lb/dJan, Feb, Mar, Apr, Oct, Nov, Dec001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 113 lb/dMay–Sep001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 282 lb/dJan, Feb, Mar, Apr, Oct, Nov, Dec001
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≤ 188 lb/dall year001
Solids, total suspendedannual totalreport only (lb/yr)Dec001
Solids, total suspendedmaximum weekly average≤ 282 lb/dall year001
Solids, total suspendedcumulative total≤ 68525 lb/yrall year001
Solids, total suspendedmonthly totalreport only (lb/mo)all year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]cumulative total≤ 9137 lb/yrall year001
Nitrogen, total [as N]monthly totalreport only (lb/mo)all year001
Nitrogen, total [as N]annual totalreport only (lb/yr)Dec001
Nitrogen, total [as N]annual totalreport only (lb/yr)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≤ .9 mg/LMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 5.6 mL/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 3.1 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 12 mL/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum monthly average≤ 5.6 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 35 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 19 lb/dMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 75 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]cumulative total≤ 685 lb/yrall year001
Phosphorus, total [as P]annual totalreport only (lb/yr)Dec001
Phosphorus, total [as P]monthly totalreport only (lb/mo)all year001
Phosphorus, total [as P]annual totalreport only (lb/yr)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≤ .02 mg/Lall year001
E. colimaximum monthly geometric mean≤ 126 MPN/100mLall year001
BOD, 5-day, percent removalminimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Flow, totaltotalreport only (Mgal/mo)all year001
Flow, totalannual totalreport only (Mgal/yr)all year001
Flow, totalannual totalreport only (Mgal/yr)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

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/MD0020257 · MCP: https://passage-data.com/mcp