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NPDES permit MD0022446 · Minor POTW · effective, expires 2030-08-31 · 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.

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

11values over a limit
3required values missing, on 1 form(s)
0of 56 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (11).

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 (168)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMAXIMUM report only all year
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
001BOD, 5-day, 20 deg. CMX MO AV <= 20 mg/L May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX MO AV <= 30 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 30 mg/L May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX WK AV <= 45 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX MO AV <= 100 lb/d May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX MO AV <= 150 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 150 lb/d May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX WK AV <= 225 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
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 <= 150 lb/d all year
001Solids, total suspendedANNL MAX report only all year
001Solids, total suspendedMO TOTAL report only all year
001Solids, total suspendedMX WK AV <= 225 lb/d 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, total [as N]ANNL TOT report only all year
001Nitrogen, total [as N]ANNL TOT report only all year
001Nitrogen, organic total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MX MO AV <= .5 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX MO AV <= .6 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= 1.9 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX DA AV <= 2.5 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= 2.5 lb/d May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX MO AV <= 3 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= 9.5 lb/d May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX DA AV <= 12.5 lb/d Jan, Feb, Mar, Apr, 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]MX MO AV <= .3 mg/L all year
001Phosphorus, total [as P]MX WK AV <= .45 mg/L all year
001Phosphorus, total [as P]ANNL MAX report only all year
001Phosphorus, total [as P]MX MO AV <= 1.5 lb/d all year
001Phosphorus, total [as P]MX WK AV <= 2.3 lb/d all year
001Phosphorus, total [as P]MO TOTAL report only all year
001Phosphorus, total [as P]ANNL TOT report only all year
001Phosphorus, total [as P]ANNL TOT report only all year
001Cyanide, free [as free]MINIMUM report only all year
001Sulfate, dissolved [as SO4]MINIMUM report only all year
001Aluminum, total recoverableMO AVG report only all year
001Phosphate, ortho [as P]MO AVG report only all year
001AcrylonitrileMINIMUM report only all year
001Benzo[b]fluorantheneMINIMUM report only all year
001Benzo[k]fluorantheneMINIMUM report only all year
001ChryseneMINIMUM report only all year
001Indeno[1,2,3-cd]pyreneMINIMUM report only all year
001N-Nitrosodi-N-propylamineMINIMUM report only all year
001N-Nitrosodimethylamine [NDMA]MINIMUM report only all year
001Benzo[a]anthraceneMINIMUM report only all year
0013,3'-DichlorobenzidineMINIMUM report only all year
001BenzidineMINIMUM report only all year
0014,4'-DDTMINIMUM report only all year
0014,4'-DDDMINIMUM report only all year
0014,4'-DDEMINIMUM report only all year
001AldrinMINIMUM report only all year
001Chlordane [tech mix. and metabolites]MINIMUM report only all year
001DieldrinMINIMUM report only all year
001ToxapheneMINIMUM report only all year
001HeptachlorMINIMUM report only all year
001Heptachlor epoxideMINIMUM report only all year
001Polychlorinated biphenyls [PCBs]MINIMUM report only all year
001HexachlorobenzeneMINIMUM report only all year
001Temperature, length of excursionVALUE <= 1 d all year
001Temperature, length of excursionVALUE report only all year
001Temperature, length of excursionVALUE <= 1 d all year
001Flow, in conduit or thru treatment plantMAXIMUM <= .55 MGD all year
001E. coliMAXIMUM <= 126 MPN/100mL all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Flow, totalMO TOTAL report only all year
001Flow, totalANNL TOT report only all year
001Flow, totalANNL TOT report only all year
001Chloride, dissolved [as Cl]MINIMUM report only all year
002Oxygen, dissolved [DO]MINIMUM report only all year
002BOD, 5-day, 20 deg. CMX MO AV <= 30 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
002BOD, 5-day, 20 deg. CMX MO AV <= 20 mg/L May, Jun, Jul, Aug, Sep
002BOD, 5-day, 20 deg. CMX MO AV <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002BOD, 5-day, 20 deg. CMX WK AV <= 30 mg/L May, Jun, Jul, Aug, Sep
002BOD, 5-day, 20 deg. CMX WK AV <= 45 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
002BOD, 5-day, 20 deg. CMX WK AV <= 45 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002BOD, 5-day, 20 deg. CMX MO AV <= 150 lb/mo Jan, Feb, Mar, Apr, Oct, Nov, Dec
002BOD, 5-day, 20 deg. CMX MO AV <= 100 lb/d May, Jun, Jul, Aug, Sep
002BOD, 5-day, 20 deg. CMX MO AV <= 150 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002BOD, 5-day, 20 deg. CMX WK AV <= 225 lb/mo Jan, Feb, Mar, Apr, Oct, Nov, Dec
002BOD, 5-day, 20 deg. CMX WK AV <= 150 lb/d May, Jun, Jul, Aug, Sep
002BOD, 5-day, 20 deg. CMX WK AV <= 225 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002pHMINIMUM report only all year
002pHMAXIMUM report only all year
002Solids, total suspendedMX MO AV <= 30 mg/L all year
002Solids, total suspendedMO AVG report only all year
002Solids, total suspendedMX WK AV <= 45 mg/L all year
002Solids, total suspendedMX MO AV <= 150 lb/d all year
002Solids, total suspendedMX WK AV <= 225 lb/d all year
002Solids, total suspendedANNL MAX 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]MO AVG report only all year
002Nitrogen, total [as N]MO TOTAL report only all year
002Nitrogen, total [as N]ANNL MAX report only all year
002Nitrogen, organic total [as N]MO AVG report only all year
002Nitrogen, ammonia total [as N]DAILY AV report only all year
002Nitrogen, ammonia total [as N]AH report only all year
002Nitrogen, ammonia total [as N]MO AVG report only all year
002Nitrogen, ammonia total [as N]DAILY AV report only all year
002Nitrogen, ammonia total [as N]AH 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
002Phosphorus, total [as P]MX MO AV <= .3 mg/L 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]MX WK AV <= .45 mg/L all year
002Phosphorus, total [as P]MX MO AV <= 1.5 lb/d all year
002Phosphorus, total [as P]ANNL MAX report only all year
002Phosphorus, total [as P]MX WK AV <= 2.3 lb/d all year
002Phosphorus, total [as P]MO TOTAL report only all year
002Phosphate, ortho [as P]MO AVG report only all year
002Flow, in conduit or thru treatment plantANNL MAX <= .6 MGD all year
002E. coliMAXIMUM report only all year
002BOD, 5-day, percent removalMO AVG report only all year
002Solids, suspended percent removalMO AVG report only all year
002Flow, totalMO TOTAL report only all year
101Oxygen, dissolved [DO]MINIMUM report only all year
101BOD, 5-day, 20 deg. CMO AVG report only all year
101BOD, 5-day, 20 deg. CWKLY MAX report only all year
101BOD, 5-day, 20 deg. CMO AVG report only all year
101BOD, 5-day, 20 deg. CWKLY MAX report only all year
101pHMINIMUM report only all year
101pHMAXIMUM report only all year
101Solids, total suspendedMO AVG report only all year
101Solids, total suspendedWKLY MAX report only all year
101Solids, total suspendedMO AVG report only all year
101Solids, total suspendedWKLY MAX report only all year
101Solids, total suspendedANNL MAX <= 82000 lb/yr all year
101Solids, total suspendedMO TOTAL report only all year
101Nitrogen, total [as N]MO AVG report only all year
101Nitrogen, total [as N]MO TOTAL report only all year
101Nitrogen, total [as N]ANNL MAX <= 10964 lb/yr all year
101Nitrogen, organic total [as N]MO AVG report only all year
101Nitrogen, ammonia total [as N]MO AVG report only all year
101Nitrogen, ammonia total [as N]DAILY MX report only all year
101Nitrogen, ammonia total [as N]MO AVG report only all year
101Nitrogen, ammonia total [as N]DAILY MX report only all year
101Nitrite + Nitrate total [as N]MO AVG report only all year
101Phosphorus, total [as P]MO AVG report only all year
101Phosphorus, total [as P]WKLY MAX report only all year
101Phosphorus, total [as P]MO AVG report only all year
101Phosphorus, total [as P]MO TOTAL report only all year
101Phosphorus, total [as P]ANNL AVG <= 822 lb/yr all year
101Phosphorus, total [as P]WKLY MAX report only all year
101Phosphate, ortho [as P]MO AVG report only all year
101Flow, in conduit or thru treatment plantDAILY MX report only all year
101Flow, in conduit or thru treatment plantMO AVG report only all year
101E. coliMAXIMUM report only all year
102BOD, 5-day, 20 deg. CMO AVG report only all year
102Solids, total suspendedMO AVG report only all year
TRADSolids, total suspendedMO TOTAL report only all year
TRADSolids, total suspendedMO TOTAL report only all year
TRADNitrogen, total [as N]MO TOTAL report only all year
TRADNitrogen, total [as N]MO TOTAL report only all year
TRADPhosphorus, total [as P]MO TOTAL report only all year
TRADPhosphorus, total [as P]MO TOTAL report only all year
TRADFlowYA 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