Department of public works

NPDES permit MD0023876 · Minor NON-POTW · expired, expires 2025-08-31 · 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 2025-08-31 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

0values over a limit
0required values missing, on 0 form(s)
0of 15 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (108)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L all year
001BOD, 5-day, 20 deg. CMX MO AV <= 30 mg/L all year
001BOD, 5-day, 20 deg. CMX WK AV <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMX MO AV <= 5 lb/d all year
001BOD, 5-day, 20 deg. CMX WK AV <= 7.5 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 <= 5 lb/d all year
001Solids, total suspendedMX WK AV <= 7.5 lb/d all year
001Nitrogen, ammonia total [as N]MX MO AV <= 4.9 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= 2.6 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MX DA AV <= 23.9 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= 16.2 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MX MO AV <= .8 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= .4 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MX DA AV <= 4 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= 2.7 lb/d May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]MO TOTAL report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
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 residualDAILY MX < .1 mg/L all year
001E. coliGX <= 126 MPN/100mL all year
001Flow, totalTOTAL report only all year
001Discharge event observation [Visual Monitoring]DN report only all year
002ConductivityMO AVG report only all year
002ConductivityMO AVG report only all year
002Oxygen, dissolved [DO]MINIMUM >= 5 mg/L all year
002Oxygen, dissolved [DO]MINIMUM >= 5 mg/L all year
002BOD, 5-day, 20 deg. CMX WK AV <= 23 mg/L all year
002BOD, 5-day, 20 deg. CMX WK AV <= 23 mg/L all year
002BOD, 5-day, 20 deg. CMX MO AV <= 15 mg/L all year
002BOD, 5-day, 20 deg. CMX MO AV <= 15 mg/L all year
002BOD, 5-day, 20 deg. CMX WK AV <= 7.5 lb/d all year
002BOD, 5-day, 20 deg. CMX WK AV <= 7.5 lb/d all year
002BOD, 5-day, 20 deg. CMX MO AV <= 5 lb/d all year
002BOD, 5-day, 20 deg. CMX MO AV <= 5 lb/d all year
002pHMINIMUM >= 6.5 SU all year
002pHMINIMUM >= 6.5 SU all year
002pHMAXIMUM <= 8.5 SU all year
002pHMAXIMUM <= 8.5 SU all year
002Solids, total suspendedMX WK AV <= 23 mg/L all year
002Solids, total suspendedMX WK AV <= 23 mg/L all year
002Solids, total suspendedMX MO AV <= 15 mg/L all year
002Solids, total suspendedMX MO AV <= 15 mg/L all year
002Solids, total suspendedMX WK AV <= 7.5 lb/d all year
002Solids, total suspendedMX WK AV <= 7.5 lb/d all year
002Solids, total suspendedANNL MAX <= 1825 lb/yr all year
002Solids, total suspendedANNL MAX <= 1825 lb/yr all year
002Solids, total suspendedMX MO AV <= 5 lb/d all year
002Solids, total suspendedMX MO AV <= 5 lb/d all year
002Solids, total suspendedMO TOTAL report only all year
002Solids, total suspendedMO TOTAL report only all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, total [as N]ANNL MAX <= 1045 lb/yr all year
002Nitrogen, total [as N]ANNL MAX <= 1045 lb/yr all year
002Nitrogen, total [as N]MO TOTAL report only all year
002Nitrogen, total [as N]MO TOTAL report only all year
002Nitrogen, organic total [as N]MO AVG report only all year
002Nitrogen, organic total [as N]MO AVG report only all year
002Nitrogen, ammonia total [as N]MX MO AV <= 2.2 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX MO AV <= 2.2 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX MO AV <= 4.9 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MX MO AV <= 4.9 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MX DA AV <= 16.2 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX DA AV <= 16.2 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX DA AV <= 20.3 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MX DA AV <= 20.3 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MX DA AV <= 5.4 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX DA AV <= 5.4 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX DA AV <= 6.8 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MX DA AV <= 6.8 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MX MO AV <= .7 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX MO AV <= .7 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX MO AV <= 1.6 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MX MO AV <= 1.6 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
002Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
002Nitrite + Nitrate total [as N]MO AVG report only all year
002Nitrite + Nitrate total [as N]MO AVG report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]ANNL MAX <= 174 lb/yr all year
002Phosphorus, total [as P]ANNL MAX <= 174 lb/yr all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]MO TOTAL report only all year
002Phosphorus, total [as P]MO TOTAL report only all year
002Arsenic, total recoverableMAXIMUM report only all year
002Arsenic, total recoverableMAXIMUM report only all year
002Phosphate, ortho [as P]MO AVG report only all year
002Phosphate, ortho [as P]MO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002E. coliMAXIMUM <= 63 MPN/100mL all year
002E. coliMAXIMUM <= 63 MPN/100mL all year
002Solids, total dissolvedQRTR AVG report only Mar, Jun, Sep, Dec
002Solids, total dissolvedQRTR AVG report only Mar, Jun, Sep, Dec
002Flow, totalMO TOTAL report only all year
002Flow, totalMO TOTAL 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