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Lakeshore Management, INC

Sewage treatment plant, Mount Airy, Maryland. NPDES permit MD0024546, in force until Feb 28, 2031. Last 12 months: over a limit 12 times (last August 2026), 5 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (40 values), outfall 101 form A yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 12 reports late

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

Period endingParameterReportedLimitOver by
June 2026Nitrogen, Kjeldahl, total [as N], maximum monthly average5.5 mg/L≤ 3 mg/L83%
June 2026Nitrogen, Kjeldahl, total [as N], maximum weekly average17.3 mg/L≤ 4.5 mg/L284%
June 2026Nitrogen, Kjeldahl, total [as N], maximum weekly average4.3 lb/d≤ 4.2 lb/d2%
June 2026Nitrogen, ammonia total [as N], maximum monthly average3 mg/L≤ 2.2 mg/L36%
July 2026Nitrogen, Kjeldahl, total [as N], maximum weekly average9.3 mg/L≤ 4.5 mg/L107%
July 2026Nitrogen, ammonia total [as N], maximum monthly average4.2 mg/L≤ 2.2 mg/L91%
August 2026BOD, 5-day, 20 deg. C, maximum weekly average14.2 lb/d≤ 14 lb/d1%
August 2026BOD, 5-day, 20 deg. C, maximum weekly average25 mg/L≤ 15 mg/L67%
August 2026Nitrogen, Kjeldahl, total [as N], maximum monthly average10.8 mg/L≤ 3 mg/L260%
August 2026Nitrogen, Kjeldahl, total [as N], maximum monthly average5.1 lb/d≤ 2.8 lb/d82%
August 2026Nitrogen, Kjeldahl, total [as N], maximum weekly average16.6 lb/d≤ 4.2 lb/d295%
August 2026Nitrogen, Kjeldahl, total [as N], maximum weekly average29.3 mg/L≤ 4.5 mg/L551%

Limits in force (54)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Oxygen, dissolved [DO]instantaneous minimum≥ 7 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 10 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≤ 15 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≤ 9.4 lb/dMay–Oct001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 28 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 14 lb/dMay–Oct001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 42 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≤ 28 lb/dall year001
Solids, total suspendedmaximum weekly average≤ 42 lb/dall year001
Solids, total suspendedmonthly totalreport only (lb/mo)all year001
Solids, total suspendedannual maximumreport only (lb/yr)all 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]annual maximumreport 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≤ 2.2 mg/LMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 3.2 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum monthly average≤ 2.1 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 3 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, Kjeldahl, total [as N]maximum monthly average≤ 3 mg/LMay–Oct001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 4.5 mg/LMay–Oct001
Nitrogen, Kjeldahl, total [as N]weekly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, Kjeldahl, total [as N]maximum monthly average≤ 2.8 lb/dMay–Oct001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)Jan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 4.2 lb/dMay–Oct001
Nitrogen, Kjeldahl, total [as N]weekly averagereport only (lb/d)Jan, 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]monthly totalreport only (lb/mo)all year001
Phosphorus, total [as P]annual maximumreport 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
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 (MGD)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year101
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year101
Solids, total suspendedmonthly averagereport only (mg/L)all year101
Solids, total suspendedmonthly averagereport only (mg/L)all year101

New limits from Sep 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], maximum monthly average1 mg/L (May–Oct)tighter3 mg/L (3 values)3×
Nitrogen, ammonia total [as N], maximum monthly average1.4 mg/L (Jan, Feb, Mar, Apr, Nov, Dec)tighter2.2 mg/L (4 values)1.57×
Nitrogen, ammonia total [as N], maximum monthly average0.94 lb/d (May–Oct)tighter0.5 lb/d (3 values)0.532×
Nitrogen, ammonia total [as N], maximum monthly average1.3 lb/d (Jan, Feb, Mar, Apr, Nov, Dec)tighter0.55 lb/d (5 values, 1 below detection)0.423×

How strict are these limits?

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

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