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Allegany County Dept. of Public Works - Utilities Division

Sewage treatment plant, Westernport, Maryland. NPDES permit MD0060071 expired May 31, 2026; its limits still apply. 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 (30 values), outfall TRAD form E monthly (7 values), outfall 001 form Z yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 25 reports late

Limits in force (45)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 26 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 39 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 152 lb/dall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 228 lb/dall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 8.5 SUall year001
Solids, total suspendedmaximum monthly average≤ 26 mg/Lall year001
Solids, total suspendedmaximum weekly average≤ 39 mg/Lall year001
Solids, total suspendedmaximum monthly average≤ 152 lb/dall year001
Solids, total suspendedmaximum weekly average≤ 228 lb/dall year001
Solids, total suspendedcumulative total≤ 54820 lb/yrall year001
Solids, total suspendedmonthly loadreport only (lb/mo)all year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]cumulative total≤ 7309 lb/yrall year001
Nitrogen, total [as N]monthly totalreport only (lb/mo)all year001
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≤ 4.2 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum monthly average≤ 25 lb/dMay–Oct001
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)Jan, Feb, Mar, Apr, Nov, Dec001
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 total≤ 548 lb/yrall year001
Phosphorus, total [as P]monthly totalreport only (lb/mo)all year001
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 plantmonthly maximumreport only (MGD)all year001
Chlorine, total residualmaximum≤ .1 mg/Lall year001
E. colimaximum monthly geometric mean≤ 126 MPN/100mLall year001
Flow, totaltotalreport only (Mgal/mo)all year001
Flow, totalannual totalreport only (Mgal/yr)all year001
Flow, totalannual totalreport only (Mgal/yr)all year001
Solids, total suspendedcumulative totalreport only (lb/yr)all yearTRAD
Solids, total suspendedcumulative totalreport only (lb/yr)all yearTRAD
Nitrogen, total [as N]cumulative totalreport only (lb/yr)all yearTRAD
Nitrogen, total [as N]cumulative totalreport only (lb/yr)all yearTRAD
Phosphorus, total [as P]cumulative totalreport only (lb/yr)all yearTRAD
Phosphorus, total [as P]cumulative totalreport only (lb/yr)all yearTRAD
Flowyear-to-date totalreport only (Mgal/yr)all yearTRAD

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/MD0060071 · MCP: https://passage-data.com/mcp