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Town of Accident

Sewage treatment plant, Accident, Maryland. NPDES permit MD0051721, in force until Dec 31, 2026. Last 12 months: over a limit 24 times (last August 2026), 6 required values missing, 4 of 33 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (38 values), outfall 101 form A monthly (4 values), outfall 201 form A monthly (1 value)
Renewal application due
Jul 4, 2026 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
9 values over a limit, 6 required values missing, 1 of 36 reports late

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

All 24 values over a limit
Period endingParameterReportedLimitOver by
December 2025Solids, suspended percent removal, minimum81.13 %≥ 85 %26%
December 2025Solids, suspended percent removal, minimum81.13 %≥ 85 %26%
December 2025Solids, total suspended, monthly average23.2 lb/d≤ 13 lb/d78%
December 2025Solids, total suspended, weekly average51.6 lb/d≤ 19 lb/d172%
January 2026BOD, 5-day, 20 deg. C, maximum monthly average29.3 lb/d≤ 13 lb/d125%
January 2026BOD, 5-day, 20 deg. C, maximum monthly average40 mg/L≤ 30 mg/L33%
January 2026BOD, 5-day, 20 deg. C, maximum weekly average126 mg/L≤ 45 mg/L180%
January 2026BOD, 5-day, 20 deg. C, maximum weekly average86.8 lb/d≤ 19 lb/d357%
January 2026BOD, 5-day, percent removal, minimum78.61 %≥ 85 %43%
January 2026BOD, 5-day, percent removal, minimum78.61 %≥ 85 %43%
January 2026Solids, suspended percent removal, minimum32.14 %≥ 85 %352%
January 2026Solids, suspended percent removal, minimum32.14 %≥ 85 %352%
January 2026Solids, total suspended, monthly average67.9 lb/d≤ 13 lb/d422%
January 2026Solids, total suspended, monthly average87 mg/L≤ 30 mg/L190%
January 2026Solids, total suspended, weekly average152.9 lb/d≤ 19 lb/d705%
January 2026Solids, total suspended, weekly average222 mg/L≤ 45 mg/L393%
February 2026BOD, 5-day, 20 deg. C, maximum weekly average22.6 lb/d≤ 19 lb/d19%
February 2026Solids, total suspended, weekly average34.3 lb/d≤ 19 lb/d81%
May 2026BOD, 5-day, 20 deg. C, maximum monthly average17 lb/d≤ 5 lb/d240%
May 2026BOD, 5-day, 20 deg. C, maximum weekly average29.1 lb/d≤ 7.5 lb/d288%
May 2026Nitrogen, ammonia total [as N], daily maximum8.8 lb/d≤ 4.1 lb/d115%
May 2026Nitrogen, ammonia total [as N], monthly average2.4 lb/d≤ 1.5 lb/d60%
May 2026Solids, total suspended, weekly average19.7 lb/d≤ 19 lb/d4%
August 2026BOD, 5-day, 20 deg. C, maximum weekly average8.7 lb/d≤ 7.5 lb/d16%

Limits in force (51)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitmaximum daily averagereport only (deg F)all year001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitmaximum daily averagereport only (deg F)all year001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitmaximum daily 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≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 12 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 weekly average≤ 18 mg/LMay–Oct001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 13 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 5 lb/dMay–Oct001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 19 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 7.5 lb/dMay–Oct001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 8.5 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 13 lb/dall year001
Solids, total suspendedweekly average≤ 19 lb/dall year001
Solids, total suspendedcumulative total≤ 13400 lb/yrall year001
Solids, total suspendedmonthly totalreport only (lb/mo)all year001
Nitrogen, ammonia total [as N]monthly average≤ 3.5 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 9.9 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 14.1 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 4.1 lb/dMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 5.9 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 lb/dMay–Oct001
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)Jan, Feb, Mar, Apr, Nov, Dec001
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year001
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year001
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year001
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year001
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year001
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year001
Copper, total recoverablemonthly averagereport only (ug/L)all year001
Copper, total recoverabledaily maximumreport only (ug/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 removalminimum≥ 85 %all year001
Solids, suspended percent removalminimum≥ 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
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year101
Flow, totalmonthly totalreport only (Mgal/mo)all year201

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

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Your permit document is the final word. As JSON: /api/v1/permits/MD0051721 · MCP: https://passage-data.com/mcp