University of Maryland, Baltimore — NPDES permit MD0054950: limits, due date and EPA's record

Sewerage Systems, Port Deposit, Maryland. NPDES permit MD0054950 expired Jan 31, 2025; its limits still apply. Last 12 months: no values over a limit, 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Limits in force (19)

Parameter	Statistic	Limit	Months
Oxygen, dissolved [DO]	instantaneous minimum	≥ 5 mg/L	all year
BOD, 5-day, 20 deg. C	maximum monthly average	≤ 30 mg/L	all year
BOD, 5-day, 20 deg. C	maximum weekly average	≤ 45 mg/L	all year
BOD, 5-day, 20 deg. C	maximum monthly average	≤ 1.25 lb/d	all year
BOD, 5-day, 20 deg. C	maximum weekly average	≤ 1.88 lb/d	all year
pH	minimum	≥ 6.5 SU	all year
pH	maximum	≤ 7.5 SU	all year
Solids, total suspended	maximum monthly average	≤ 30 mg/L	all year
Solids, total suspended	maximum weekly average	≤ 45 mg/L	all year
Solids, total suspended	maximum monthly average	≤ 1.25 lb/d	all year
Solids, total suspended	maximum weekly average	≤ 1.88 lb/d	all year
Nitrogen, ammonia total [as N]	maximum monthly average	≤ 3.1 mg/L	May–Oct
Nitrogen, ammonia total [as N]	maximum monthly average	≤ 5.7 mg/L	Jan, Feb, Mar, Apr, Oct, Nov, Dec
Nitrogen, ammonia total [as N]	maximum monthly average	≤ .13 lb/d	May–Oct
Nitrogen, ammonia total [as N]	maximum monthly average	≤ .24 lb/d	Jan, Feb, Mar, Apr, Oct, Nov, Dec
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year
Chlorine, total residual	maximum	≤ .1 mg/L	all year
E. coli	maximum monthly geometric mean	≤ 126 MPN/100mL	all year

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/MD0054950 · MCP: https://passage-data.com/mcp