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The Town of CHURCH HILL

Sewage treatment plant, Church Hill, Maryland. NPDES permit MD0050016 expired Aug 31, 2024; its limits still apply. Last 12 months: over a limit 12 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (28 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
6 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 monthly average22 lb/d≤ 20 lb/d10%
February 2026BOD, 5-day, 20 deg. C, maximum monthly average47 mg/L≤ 30 mg/L57%
February 2026BOD, 5-day, 20 deg. C, maximum weekly average66 mg/L≤ 45 mg/L47%
February 2026Phosphorus, total [as P], annual average6.1 mg/L≤ 6 mg/L2%
March 2026BOD, 5-day, 20 deg. C, maximum monthly average33 lb/d≤ 20 lb/d65%
March 2026BOD, 5-day, 20 deg. C, maximum monthly average52 mg/L≤ 30 mg/L73%
March 2026BOD, 5-day, 20 deg. C, maximum weekly average42 lb/d≤ 30 lb/d40%
March 2026BOD, 5-day, 20 deg. C, maximum weekly average64 mg/L≤ 45 mg/L42%
April 2026BOD, 5-day, 20 deg. C, maximum weekly average32 lb/d≤ 30 lb/d7%
April 2026BOD, 5-day, 20 deg. C, maximum weekly average47 mg/L≤ 45 mg/L4%
August 2026BOD, 5-day, 20 deg. C, maximum weekly average33 lb/d≤ 30 lb/d10%
August 2026BOD, 5-day, 20 deg. C, maximum weekly average46 mg/L≤ 45 mg/L2%

Limits in force (29)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/Lall year
Oxygen, dissolved [DO]minimum weekly average≥ 6 mg/LFeb–May
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≤ 20 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 30 lb/dall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmaximum monthly average≤ 90 mg/Lall year
Solids, total suspendedmaximum monthly average≤ 60 lb/dall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, organic total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]maximum monthly average≤ 6 mg/LMay–Oct
Phosphorus, total [as P]annual average≤ 6 mg/Lall year
Phosphorus, total [as P]maximum monthly average≤ 122 lb/moMay–Oct
Phosphorus, total [as P]cumulative total≤ 1462 lb/yrall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Chlorine, total residualmaximum≤ .1 mg/Lall year
Coliform, fecal generalmonthly median≤ 14 MPN/100mLall year
Flowdaily maximumreport only (MGD)all year
Flowmonthly averagereport only (MGD)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.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MD0050016 · MCP: https://passage-data.com/mcp