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NPDES permit MD0020249 · Minor POTW · effective, expires 2029-01-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

2values over a limit
56required values missing, on 5 form(s)
7of 34 forms filed late

Last period with anything received: 2026-07-31. Most often over: Enterococci (1), Phosphorus, total [as P] (1).

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 (61)

OutfallParameterStatisticLimitMonths
001Color [PT-CO units]MO AVG report only all year
001Oxygen, dissolved [DO]INST MIN >= 5 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 <= 130 lb/d May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX MO AV <= 190 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 190 lb/d May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX WK AV <= 280 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 <= 190 lb/d all year
001Solids, total suspendedMX WK AV <= 280 lb/d all year
001Solids, total suspendedCUM TOTL <= 68525 lb/yr all year
001Solids, total suspendedMO TOTAL report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]CUM TOTL <= 9137 lb/yr 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, organic total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MX MO AV <= 7.6 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG report only Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= 47 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG report only Jan, Feb, Mar, Apr, Dec
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrite + Nitrate 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 <= .72 mg/L May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MX MO AV <= 4.5 lb/d May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]ANNL MAX <= 685 lb/yr 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
001Phosphorus, total [as P]MO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Phosphorus, total [as P]MO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Phosphorus, total [as P]MO TOTAL <= 135 lb/mo May, Jun, Jul, Aug, Sep, Oct
001Phosphate, ortho [as P]MO AVG 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 residualMAXIMUM < .1 mg/L all year
001EnterococciMAXIMUM <= 35 MPN/100mL all year
001BOD, 5-day, percent removalMINIMUM >= 85 % all year
001Solids, suspended percent removalMINIMUM >= 85 % all year
001Flow, totalTOTAL report only all year
001Flow, totalANNL TOT report only all year
001Flow, totalANNL TOT report only all year
101BOD, 5-day, 20 deg. CMO AVG report only all year
101Solids, total suspendedMO AVG report only all year
TRADSolids, total suspendedCUM TOTL report only all year
TRADSolids, total suspendedCUM TOTL report only all year
TRADNitrogen, total [as N]CUM TOTL report only all year
TRADNitrogen, total [as N]CUM TOTL report only all year
TRADPhosphorus, total [as P]CUM TOTL report only all year
TRADPhosphorus, total [as P]CUM TOTL 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