City of Salisbury, Wastewater Treatment Branch

NPDES permit MD0021571 · Major POTW · effective, expires 2028-05-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
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EPA's record, 2025-09-01 to 2026-08-31

3values over a limit
22required values missing, on 5 form(s)
3of 78 forms filed late

Last period with anything received: 2026-07-31. Most often over: Toxicity, Chronic (2), Enterococci (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 (109)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L all year
001Oxygen, dissolved [DO]MN WK AV >= 6 mg/L Feb, Mar, Apr, May
001Oxygen, dissolved [DO]MN WK AV report only Jan, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX MO AV <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMX MO AV <= 28.8 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMX DA AV <= 45 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 43.2 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMX MO AV <= 2100 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMX MO AV <= 2041 lb/d May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMX WK AV <= 3200 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 3062 lb/d May, Jun, Jul, Aug, Sep, Oct
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 <= 2100 lb/d all year
001Solids, total suspendedMX WK AV <= 3200 lb/d all year
001Solids, total suspendedCUM TOTL <= 776618 lb/yr all year
001Solids, total suspendedMO TOTAL report only all year
001Nitrogen, total [as N]MX MO AV <= 6.6 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]MX MO AV report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, total [as N]MX MO AV <= 467 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]MX MO AV report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, total [as N]CUM TOTL <= 103549 lb/yr all year
001Nitrogen, total [as N]ANNL TOT report only Dec
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 <= 4.5 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MX MO AV <= 12 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= 319 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MX MO AV <= 850 lb/d Jan, Feb, Mar, Apr, 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 <= 1.6 mg/L all year
001Phosphorus, total [as P]MX MO AV <= 110 lb/d all year
001Phosphorus, total [as P]ANNL MAX <= 7766 lb/yr all year
001Phosphorus, total [as P]ANNL TOT report only Dec
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
001Silver total recoverableMO AVG report only all year
001Silver total recoverableDAILY AV <= 7.8 ug/L Jan, Feb, Mar, Apr, Nov, Dec
001Silver total recoverableDAILY AV <= 7.1 ug/L May, Jun, Jul, Aug, Sep, Oct
001Silver total recoverableDAILY AV <= 7.5 ug/L Jan, Feb, Mar, Apr, Nov, Dec
001Silver total recoverableDAILY AV <= 6.9 ug/L May, Jun, Jul, Aug, Sep, Oct
001Silver total recoverableDAILY AV <= 7.3 ug/L Jan, Feb, Mar, Apr, Nov, Dec
001Silver total recoverableDAILY AV <= 6.8 ug/L May, Jun, Jul, Aug, Sep, Oct
001Silver total recoverableDAILY AV <= 6.9 ug/L Jan, Feb, Mar, Apr, Nov, Dec
001Silver total recoverableDAILY AV <= 6.5 ug/L May, Jun, Jul, Aug, Sep, Oct
001Silver total recoverableDAILY AV <= .33 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Silver total recoverableDAILY AV <= .3 lb/d May, Jun, Jul, Aug, Sep, Oct
001Silver total recoverableDAILY AV <= .38 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Silver total recoverableDAILY AV <= .35 lb/d May, Jun, Jul, Aug, Sep, Oct
001Silver total recoverableDAILY AV <= .41 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Silver total recoverableDAILY AV <= .39 lb/d May, Jun, Jul, Aug, Sep, Oct
001Silver total recoverableDAILY AV <= .49 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Silver total recoverableDAILY AV <= .46 lb/d May, Jun, Jul, Aug, Sep, Oct
001Copper, total recoverableMO AVG report only all year
001Copper, total recoverableMO AVG <= 17.4 ug/L Jan, Feb, Mar, Apr, Nov, Dec
001Copper, total recoverableMO AVG <= 16.6 ug/L May, Jun, Jul, Aug, Sep, Oct
001Copper, total recoverableMO AVG <= 16.7 ug/L Jan, Feb, Mar, Apr, Nov, Dec
001Copper, total recoverableMO AVG <= 15.6 ug/L May, Jun, Jul, Aug, Sep, Oct
001Copper, total recoverableMO AVG <= 16.3 ug/L Jan, Feb, Mar, Apr, Nov, Dec
001Copper, total recoverableMO AVG <= 15 ug/L May, Jun, Jul, Aug, Sep, Oct
001Copper, total recoverableMO AVG <= 14.8 ug/L Jan, Feb, Mar, Apr, Nov, Dec
001Copper, total recoverableMO AVG <= 13.8 ug/L May, Jun, Jul, Aug, Sep, Oct
001Copper, total recoverableMO AVG <= .73 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Copper, total recoverableMO AVG <= .69 lb/d May, Jun, Jul, Aug, Sep, Oct
001Copper, total recoverableMO AVG <= .84 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Copper, total recoverableMO AVG <= .78 lb/d May, Jun, Jul, Aug, Sep, Oct
001Copper, total recoverableMO AVG <= .92 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Copper, total recoverableMO AVG <= .85 lb/d May, Jun, Jul, Aug, Sep, Oct
001Copper, total recoverableMO AVG <= 1.05 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Copper, total recoverableMO AVG <= .98 lb/d May, Jun, Jul, Aug, Sep, Oct
001Phosphate, ortho [as P]MO AVG report only all year
001Benzo[b]fluorantheneMO AVG report only all year
001Benzo[k]fluorantheneMO AVG report only all year
001Indeno[1,2,3-cd]pyreneMO AVG report only all year
001Benzo[a]anthraceneMO AVG report only all year
001Dibenz[a,h]anthraceneMO AVG report only all year
0014,4'-DDTMO AVG report only all year
0014,4'-DDDMO AVG report only all year
0014,4'-DDEMO AVG report only all year
001Chlordane [tech mix. and metabolites]MO AVG report only all year
001ToxapheneMO AVG report only all year
001HeptachlorMO AVG report only all year
001Heptachlor epoxideMO 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
001EnterococciMX <= 35 MPN/100mL all year
001BOD, 5-day, percent removalMINIMUM >= 85 % all year
001Solids, suspended percent removalMINIMUM >= 85 % all year
001Flow, totalANNL TOT report only Dec
001Flow, totalMO TOTAL report only all year
001Flow, totalANNL TOT report only all year
001Flow, totalANNL TOT report only all year
001Toxicity, AcuteMAXIMUM <= 1 tox chronic all year
001Toxicity, ChronicMAXIMUM <= 2.84 tox acute 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