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NPDES permit MD0058661 · Minor POTW · effective, expires 2029-05-31 · 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.

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

2values over a limit
0required values missing, on 0 form(s)
0of 22 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (2).

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 (44)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 6 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 15 mg/L Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMY <= 21 lb/d Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMY <= 63 lb/d Jan, Feb, Mar, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY MAX <= 31 lb/d Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CWKLY MAX <= 94 lb/d Jan, Feb, Mar, Oct, Nov, Dec
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMY <= 63 lb/d all year
001Solids, total suspendedANNL MAX report only all year
001Solids, total suspendedWKLY MAX <= 94 lb/d all year
001Solids, total suspendedMY report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]ANNL MAX report only all year
001Nitrogen, total [as N]MO TOTAL report only all year
001Nitrogen, organic total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= .5 mg/L Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= .75 mg/L Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]WKLY AVG <= 6 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MY <= 1 lb/d Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MY <= 8 lb/d Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY MAX <= 1.6 lb/d Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]WKLY MAX <= 13 lb/d Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]ANNL MAX report only all year
001Phosphorus, total [as P]MO TOTAL report only all year
001Phosphate, ortho [as P]MO AVG report only all year
001Flow, in conduit or thru treatment plantAVERAGE report only all year
001Flow, in conduit or thru treatment plantCUM TOTL report only Dec
001Chlorine, total residualMAXIMUM < .1 mg/L all year
001E. coliMX <= 126 MPN/100mL all year
001BOD, 5-day, percent removalMINIMUM >= 85 % all year
001Solids, suspended percent removalMINIMUM >= 85 % all year
001Flow, totalMO TOTAL report only all year
101BOD, 5-day, 20 deg. CMO AVG report only all year
101Solids, total suspendedMO AVG report only 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