Maryland Environmental Service

NPDES permit MD0062821 · Minor POTW · expired, expires 2025-01-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2025-01-31 and is expired: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

1values over a limit
0required values missing, on 0 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, 5-day, 20 deg. C (1).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among MD permits in EPA's filings — check your permit).

Limits in force (23)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L all year
001BOD, 5-day, 20 deg. CMX MO AV <= 5 mg/L all year
001BOD, 5-day, 20 deg. CMX WK AV <= 8 mg/L all year
001BOD, 5-day, 20 deg. CMX MO AV <= .52 lb/d all year
001BOD, 5-day, 20 deg. CMX WK AV <= .83 lb/d all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMX MO AV <= 30 mg/L all year
001Solids, total suspendedMX WK AV <= 45 mg/L all year
001Solids, total suspendedMX MO AV <= 3.1 lb/d all year
001Solids, total suspendedMX WK AV <= 4.7 lb/d all year
001Nitrogen, ammonia total [as N]MX MO AV <= 9.6 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= .91 mg/L Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX DA AV <= 18 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= 7 mg/L Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX MO AV <= 1 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= .1 lb/d Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX DA AV <= 1.9 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= .73 lb/d Jun, Jul, Aug, Sep
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMAXIMUM < .1 mg/L all year
001E. coliGX <= 126 MPN/100mL all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states