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Maryland Correctional Institution

Correctional Institutions, major discharger, Hagerstown, Maryland. NPDES permit MD0023957 expired Sep 30, 2017; its limits still apply. Last 12 months: no values over a limit, 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (33 values), form B yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 13 reports late

Limits in force (38)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)May–Oct
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)May–Oct
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)May–Oct
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)May–Oct
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)May–Oct
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)May–Oct
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 400 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 600 lb/dall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmaximum monthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmaximum monthly average≤ 400 lb/dall year
Solids, total suspendedmaximum weekly average≤ 600 lb/dall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]cumulative total≤ 19492 lb/yrall year
Nitrogen, total [as N]monthly totalreport only (lb/mo)all year
Nitrogen, total [as N]annual totalreport only (lb/yr)all year
Nitrogen, organic total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]maximum monthly average≤ 17 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]maximum monthly average≤ 10.6 mg/LMay–Oct
Nitrogen, ammonia total [as N]maximum monthly average≤ 227 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]maximum monthly average≤ 142 lb/dMay–Oct
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]cumulative total≤ 1462 lb/yrall year
Phosphorus, total [as P]monthly totalreport only (lb/mo)all year
Phosphorus, total [as P]annual totalreport only (lb/yr)all year
Phosphate, ortho [as P]monthly averagereport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmaximum≤ .1 mg/Lall year
E. colimaximum monthly geometric mean≤ 126 MPN/100mLall year
Flow, totaltotalreport only (Mgal/mo)all year
Flow, totalannual totalreport only (Mgal/yr)all year

How strict are these limits?

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

Same industry: the 6 Justice, Public Order and Safety permits in Maryland.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MD0023957 · MCP: https://passage-data.com/mcp