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Myersville WWTP

Sewage treatment plant, Myersville, Maryland. NPDES permit MD0020699, in force until Sep 30, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (33 values), outfall 101 form A monthly (2 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 (43)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily averagereport only (deg F)all year001
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year001
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 12 mg/LMay–Oct001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 18 mg/LMay–Oct001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 30 lb/dMay–Oct001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 75 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 lb/dMay–Oct001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 113 lb/dJan, Feb, Mar, Apr, 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≤ 75 lb/dall year001
Solids, total suspendedmaximum weekly average≤ 113 lb/dall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]monthly totalreport only (lb/mo)all year001
Nitrogen, total [as N]cumulative 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≤ 1.5 mg/LMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 3.8 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum daily average≤ 4.5 mg/LMay–Oct001
Nitrogen, ammonia total [as N]maximum daily average≤ 6.7 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum monthly average≤ 3.8 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 9.5 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum daily average≤ 11.3 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum daily average≤ 16.8 lb/dJan, Feb, Mar, Apr, Nov, Dec001
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 totalreport only (lb/yr)all year001
Phosphorus, total [as P]monthly totalreport only (lb/mo)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
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, totalmonthly totalreport 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

New limits from Mar 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], maximum monthly average5 lb/d (Jan, Feb, Mar, Apr, Nov, Dec)tighter0.05 lb/d (6 values)0.01×
Nitrogen, ammonia total [as N], maximum monthly average2 mg/L (Jan, Feb, Mar, Apr, Nov, Dec)tighter0.05 mg/L (6 values)0.025×
Nitrogen, ammonia total [as N], maximum monthly average2 lb/d (May–Oct)tighter0 lb/d (5 values)0×
Nitrogen, ammonia total [as N], maximum monthly average0.8 mg/L (May–Oct)tighter0 mg/L (5 values)0×
Nitrogen, ammonia total [as N], maximum daily average3.5 mg/L (May–Oct)tighter0 mg/L (5 values)0×
Nitrogen, ammonia total [as N], maximum daily average8.8 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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MD0020699 · MCP: https://passage-data.com/mcp