Passage Data · Check a report · Use it from your AI

Town of Hancock

Sewage treatment plant, Hancock, Maryland. NPDES permit MD0024562, in force until May 31, 2031. Last 12 months: over a limit 17 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (30 values), outfall 001 form B yearly, outfall 101 form A yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
9 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 17 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], maximum monthly average12.05 mg/L≤ 3.1 mg/L289%
October 2025Nitrogen, ammonia total [as N], maximum monthly average19.3 lb/d≤ 10 lb/d93%
December 2025Chlorine, total residual, maximum.5 mg/L< .2 mg/L150%
May 2026Nitrogen, ammonia total [as N], maximum monthly average11.42 mg/L≤ 3.1 mg/L268%
May 2026Nitrogen, ammonia total [as N], maximum monthly average20.95 lb/d≤ 10 lb/d110%
June 2026Nitrogen, ammonia total [as N], maximum monthly average10.91 mg/L≤ 2.3 mg/L374%
June 2026Nitrogen, ammonia total [as N], maximum monthly average18.67 lb/d≤ 7.3 lb/d156%
June 2026Nitrogen, ammonia total [as N], maximum daily average12.53 mg/L≤ 10 mg/L25%
July 2026Nitrogen, ammonia total [as N], maximum monthly average13.12 mg/L≤ 2.3 mg/L470%
July 2026Nitrogen, ammonia total [as N], maximum monthly average9.32 lb/d≤ 7.3 lb/d28%
July 2026Nitrogen, ammonia total [as N], maximum daily average11.87 mg/L≤ 10 mg/L19%
August 2026Nitrogen, ammonia total [as N], maximum monthly average10.7 lb/d≤ 7.3 lb/d47%
August 2026Nitrogen, ammonia total [as N], maximum monthly average13.73 mg/L≤ 2.3 mg/L497%
August 2026Nitrogen, ammonia total [as N], maximum daily average13.24 mg/L≤ 10 mg/L32%
September 2026Nitrogen, ammonia total [as N], maximum monthly average12.08 lb/d≤ 7.3 lb/d65%
September 2026Nitrogen, ammonia total [as N], maximum monthly average14.24 mg/L≤ 2.3 mg/L519%
September 2026Nitrogen, ammonia total [as N], maximum daily average15.12 mg/L≤ 10 mg/L51%

Limits in force (44)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year001
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≤ 95 lb/dall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 143 lb/dall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 8.5 SUall year001
Solids, total suspendedmaximum monthly average≤ 90 mg/Lall year001
Solids, total suspendedmaximum monthly average≤ 285 lb/dall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]annual maximumreport only (lb/yr)all 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≤ 7 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum monthly average≤ 2.3 mg/LMay–Oct001
Nitrogen, ammonia total [as N]maximum daily average≤ 10 mg/LMay–Oct001
Nitrogen, ammonia total [as N]maximum daily average≤ 8.3 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum monthly average≤ 22 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum monthly average≤ 7.3 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum daily average≤ 32 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum weekly average≤ 26 lb/dJan, 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]annual maximumreport only (lb/yr)all 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 plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmaximum< .02 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
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

New limits from Jun 1, 2030

ParameterNew limitFromNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], maximum monthly average3.2 lb/d (May–Oct)Jun 1, 2030tighter15.37 lb/d (6 values)4.8×
Nitrogen, ammonia total [as N], maximum monthly average1 mg/L (May–Oct)Jun 1, 2030tighter12.59 mg/L (6 values)12.6×
Nitrogen, ammonia total [as N], maximum daily average14 lb/d (May–Oct)Jun 1, 2030tighter15.94 lb/d (4 values)1.14×
Nitrogen, ammonia total [as N], maximum daily average4.5 mg/L (May–Oct)Jun 1, 2030tighter12.88 mg/L (4 values)2.86×
Nitrogen, ammonia total [as N], maximum monthly average1.8 lb/d (May–Oct)Oct 1, 2030tighter15.38 lb/d (6 values)8.54×
Nitrogen, ammonia total [as N], maximum monthly average0.4 mg/L (May–Oct)Oct 1, 2030tighter12.59 mg/L (6 values)31.5×
Nitrogen, ammonia total [as N], maximum daily average6.2 lb/d (May–Oct)Oct 1, 2030tighter15.94 lb/d (4 values)2.57×
Nitrogen, ammonia total [as N], maximum daily average1.4 mg/L (May–Oct)Oct 1, 2030tighter12.88 mg/L (4 values)9.2×
Nitrogen, total [as N], annual maximum6469 lb/yrOct 1, 2030new7025 lb/yr (12 values)1.09×
Phosphorus, total [as P], annual maximum552 lb/yrOct 1, 2030new1330 lb/yr (12 values)2.41×
Nitrogen, ammonia total [as N], maximum monthly average3.1 mg/L (Jan, Feb, Mar, Apr, Nov, Dec)Jun 1, 2030tighter——
Nitrogen, ammonia total [as N], maximum monthly average10 lb/d (Jan, Feb, Mar, Apr, Nov, Dec)Jun 1, 2030tighter——
BOD, 5-day, 20 deg. C, maximum monthly average22 mg/LOct 1, 2030tighter5.05 mg/L (12 values)0.23×
BOD, 5-day, 20 deg. C, maximum weekly average33 mg/LOct 1, 2030tighter9.7 mg/L (12 values)0.294×
Nitrogen, ammonia total [as N], maximum monthly average2.2 mg/L (Jan, Feb, Mar, Apr, Nov, Dec)Oct 1, 2030tighter——
Nitrogen, ammonia total [as N], maximum monthly average9.7 lb/d (Jan, Feb, Mar, Apr, Nov, Dec)Oct 1, 2030tighter——
Nitrogen, ammonia total [as N], maximum daily average5.9 mg/L (Jan, Feb, Mar, Apr, Nov, Dec)Oct 1, 2030tighter——
Solids, total suspended, maximum monthly average95 lb/dOct 1, 2030tighter6.8 lb/d (12 values)0.0716×
Solids, total suspended, maximum monthly average22 mg/LOct 1, 2030tighter4.55 mg/L (12 values)0.207×
Solids, total suspended, maximum weekly average33 mg/LOct 1, 2030tighter——
Solids, total suspended, maximum weekly average143 lb/dOct 1, 2030tighter——

How strict are these limits?

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

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MD0024562 · MCP: https://passage-data.com/mcp