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Patuxent MHC, LLC

Mobile Home Site Operators, Lothian, Maryland. NPDES permit MD0024694, in force until Dec 31, 2030. Last 12 months: over a limit 11 times (last February 2026), 4 required values missing, 4 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form B monthly (30 values), outfall 101 form A yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
19 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
December 2025Oxygen, dissolved [DO], minimum4.3 mg/L≥ 5 mg/L14%
January 2026BOD, 5-day, 20 deg. C, maximum monthly average63 mg/L≤ 30 mg/L110%
January 2026E. coli, maximum monthly geometric mean290 MPN/100mL≤ 126 MPN/100mL130%
January 2026Solids, total suspended, maximum monthly average41 mg/L≤ 30 mg/L37%
February 2026BOD, 5-day, 20 deg. C, maximum monthly average64 mg/L≤ 30 mg/L113%
February 2026BOD, 5-day, 20 deg. C, maximum weekly average113 mg/L≤ 45 mg/L151%
February 2026E. coli, maximum monthly geometric mean916 MPN/100mL≤ 126 MPN/100mL627%
February 2026Oxygen, dissolved [DO], instantaneous minimum4.4 mg/L≥ 5 mg/L12%
February 2026Solids, total suspended, maximum monthly average63 mg/L≤ 30 mg/L110%
February 2026Solids, total suspended, maximum weekly average15 lb/d≤ 13 lb/d15%
February 2026Solids, total suspended, maximum weekly average182 mg/L≤ 45 mg/L304%

Limits in force (33)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year001
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/Lall year001
Oxygen, dissolved [DO]minimum weekly average≥ 6 mg/LFeb–May001
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≤ 8.8 lb/dall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 13 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≤ 8.8 lb/dall year001
Solids, total suspendedmaximum weekly average≤ 13 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]monthly averagereport only (mg/L)all year001
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 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
Chlorine, total residualdaily maximum≤ .1 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, 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

How strict are these limits?

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

Same industry: the 9 Real Estate permits in Maryland.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MD0024694 · MCP: https://passage-data.com/mcp