Commissioners of Sudlersville

NPDES permit MD0020559 · Minor POTW · effective, expires 2026-12-31 · 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

4values over a limit
0required values missing, on 0 form(s)
0of 34 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, 5-day, 20 deg. C (2), Nitrogen, total [as N] (2).

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 (72)

OutfallParameterStatisticLimitMonths
001Evaporation TotalMO AVG report only all year
001ConductivityMO AVG report only all year
001ConductivityMO AVG report only all year
001ConductivityMO AVG report only all year
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L all year
001BOD, 5-day, 20 deg. CMX MO AV <= 14 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX MO AV <= 11 mg/L May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX WK AV <= 21 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 16 mg/L May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX MO AV <= 23 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX MO AV <= 18 lb/d May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX WK AV <= 34 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 27 lb/d May, Jun, Jul, Aug, Sep
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 <= 50 lb/d all year
001Solids, total suspendedMX WK AV <= 75 lb/d 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]MO AVG report only all year
001Nitrogen, total [as N]EX <= 1217 lb/yr all year
001Nitrogen, total [as N]ANNL MAX <= 2435 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, ammonia total [as N]MX MO AV <= 1.9 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX MO AV <= 2.2 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= 9.3 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX DA AV <= 6.5 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= 3.2 lb/d May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX MO AV <= 3.7 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= 16 lb/d May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX DA AV <= 11 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]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]CUM TOTL <= 183 lb/yr all year
001Phosphorus, total [as P]EX <= 91 lb/yr May, Jun, Jul, Aug, Sep, Oct
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
001Phosphate, ortho [as P]MO AVG report only all year
001RainfallMO 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
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 plantMO AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Chlorine, total residualMAXIMUM < .1 mg/L all year
001EnterococciMAXIMUM <= 21 MPN/100mL all year
001Depth of pond or reservoir in feetMO AVG report only 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 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