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Washington County Department of Water Quality

Sewage treatment plant, Smithsburg, Maryland. NPDES permit MD0024317, in force until Mar 31, 2031. Last 12 months: over a limit 14 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A2 monthly (37 values), outfall 001 form B yearly, outfall 101 form A yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

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

All 14 values over a limit
Period endingParameterReportedLimitOver by
April 2026Nitrogen, ammonia total [as N], maximum monthly average26.2 lb/d≤ 7.2 lb/d264%
April 2026Nitrogen, ammonia total [as N], maximum monthly average8.5 mg/L≤ 2.6 mg/L227%
April 2026Nitrogen, ammonia total [as N], maximum daily average117.9 lb/d≤ 18.9 lb/d524%
April 2026Nitrogen, ammonia total [as N], maximum daily average17.1 mg/L≤ 6.8 mg/L151%
May 2026BOD, 5-day, 20 deg. C, maximum weekly average19.1 mg/L≤ 15 mg/L27%
May 2026BOD, 5-day, 20 deg. C, maximum weekly average42.53 lb/d≤ 42 lb/d1%
May 2026Nitrogen, Kjeldahl, total [as N], maximum monthly average12.4 lb/d≤ 8.3 lb/d49%
May 2026Nitrogen, Kjeldahl, total [as N], maximum monthly average5.8 mg/L≤ 3 mg/L93%
May 2026Nitrogen, Kjeldahl, total [as N], maximum weekly average12.7 mg/L≤ 4.5 mg/L182%
May 2026Nitrogen, Kjeldahl, total [as N], maximum weekly average30.08 lb/d≤ 12.5 lb/d141%
May 2026Nitrogen, ammonia total [as N], maximum monthly average3.7 mg/L≤ 1.3 mg/L185%
May 2026Nitrogen, ammonia total [as N], maximum monthly average8.3 lb/d≤ 3.6 lb/d131%
May 2026Nitrogen, ammonia total [as N], maximum daily average16.4 mg/L≤ 5.6 mg/L193%
May 2026Nitrogen, ammonia total [as N], maximum daily average41.9 lb/d≤ 15.6 lb/d169%

Limits in force (62)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year001
Oxygen, dissolved [DO]daily average minimum≥ 6 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≤ 38 lb/dMay–Oct001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 113 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 57 lb/dMay–Oct001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 169 lb/dJan, Feb, Mar, Apr, Nov, Dec001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 8.5 SUall year001
Solids, total suspendedmaximum monthly average≤ 22 mg/Lall year001
Solids, total suspendedmaximum weekly average≤ 33 mg/Lall year001
Solids, total suspendedmaximum monthly average≤ 83 lb/dall year001
Solids, total suspendedmaximum weekly average≤ 125 lb/dall year001
Solids, total suspendedmonthly totalreport only (lb/mo)all year001
Solids, total suspendedannual maximumreport only (lb/yr)Dec001
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 maximum≤ 6092 lb/yrDec001
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≤ .7 mg/LMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 1.5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum daily average≤ 3.2 mg/LMay–Oct001
Nitrogen, ammonia total [as N]maximum daily average≤ 6.8 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum monthly average≤ 1.9 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 4.2 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum daily average≤ 8.9 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum daily average≤ 25.5 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, Kjeldahl, total [as N]maximum monthly average≤ 3 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 weekly average≤ 4.5 mg/LMay–Oct001
Nitrogen, Kjeldahl, total [as N]maximum monthly average≤ 11.3 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≤ 16.9 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 maximum≤ 457 lb/yrDec001
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
E. colimaximum monthly geometric mean≤ 93 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
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
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

How strict are these limits?

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

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Your permit document is the final word. As JSON: /api/v1/permits/MD0024317 · MCP: https://passage-data.com/mcp