Louisville and Jefferson County MSD

NPDES permit KY0111716 · Major POTW · effective, expires 2031-08-31 · 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

2values over a limit
0required values missing, on 0 form(s)
0of 16 forms filed late

Last period with anything received: 2026-07-31. Most often over: E. coli (1), Nitrogen, ammonia total [as N] (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 (258)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 7 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedMX WK AV <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 313 lb/d all year
001Solids, total suspendedDAILY MX <= 469 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMX WK AV report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 2 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 7.5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 21 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 52 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 31 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 78 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Phosphorus, total [as P]MO AVG <= 2 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Phosphorus, total [as P]MO AVG <= 1 mg/L May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]DAILY MX <= 3 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Phosphorus, total [as P]DAILY MX <= 2 mg/L May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY 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 plantDAILY MX report only all year
001E. coli30DA GEO <= 130 #/100mL all year
001E. coli7 DA GEO <= 240 #/100mL all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 15 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 104 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 156 lb/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]MX WK AV report only all year
001BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Toxicity, ChronicDAILY MX <= 1 tox chronic all year
001ATemperature, water deg. centigradeAVERAGE report only May, Jun, Jul, Aug, Sep, Oct
001ATemperature, water deg. centigradeAVERAGE report only Jan, Feb, Mar, Apr, Nov, Dec
001ATemperature, water deg. centigradeMAXIMUM report only May, Jun, Jul, Aug, Sep, Oct
001ATemperature, water deg. centigradeMAXIMUM report only Jan, Feb, Mar, Apr, Nov, Dec
001AOil & GreaseAVERAGE report only all year
001AOil & GreaseMAXIMUM report only all year
001APhosphorus, total [as P]AVERAGE report only all year
001APhosphorus, total [as P]MAXIMUM report only all year
001ACyanide, free [amenable to chlorination]AVERAGE report only all year
001ACyanide, free [amenable to chlorination]MAXIMUM report only all year
001AHardness, total [as CaCO3]AVERAGE report only all year
001AHardness, total [as CaCO3]MAXIMUM report only all year
001AArsenic, total recoverableAVERAGE report only all year
001AArsenic, total recoverableMAXIMUM report only all year
001ASelenium, total recoverableAVERAGE report only all year
001ASelenium, total recoverableMAXIMUM report only all year
001AThallium, total recoverableAVERAGE report only all year
001AThallium, total recoverableMAXIMUM report only all year
001ABeryllium, total recoverable [as Be]AVERAGE report only all year
001ABeryllium, total recoverable [as Be]MAXIMUM report only all year
001ANickel, total recoverableAVERAGE report only all year
001ANickel, total recoverableMAXIMUM report only all year
001ASilver total recoverableAVERAGE report only all year
001ASilver total recoverableMAXIMUM report only all year
001AZinc, total recoverableAVERAGE report only all year
001AZinc, total recoverableMAXIMUM report only all year
001ACadmium, total recoverableAVERAGE report only all year
001ACadmium, total recoverableMAXIMUM report only all year
001ALead, total recoverableAVERAGE report only all year
001ALead, total recoverableMAXIMUM report only all year
001AChromium, total recoverableAVERAGE report only all year
001AChromium, total recoverableMAXIMUM report only all year
001ACopper, total recoverableAVERAGE report only all year
001ACopper, total recoverableMAXIMUM report only all year
001AAntimony, total recoverableAVERAGE report only all year
001AAntimony, total recoverableMAXIMUM report only all year
001ADichlorobromomethaneAVERAGE report only all year
001ADichlorobromomethaneMAXIMUM report only all year
001ACarbon tetrachlorideAVERAGE report only all year
001ACarbon tetrachlorideMAXIMUM report only all year
001A1,2-DichloroethaneAVERAGE report only all year
001A1,2-DichloroethaneMAXIMUM report only all year
001ABromoformAVERAGE report only all year
001ABromoformMAXIMUM report only all year
001AChloroformAVERAGE report only all year
001AChloroformMAXIMUM report only all year
001ATolueneAVERAGE report only all year
001ATolueneMAXIMUM report only all year
001ABenzeneAVERAGE report only all year
001ABenzeneMAXIMUM report only all year
001AAcenaphthyleneAVERAGE report only all year
001AAcenaphthyleneMAXIMUM report only all year
001AAcenaphtheneAVERAGE report only all year
001AAcenaphtheneMAXIMUM report only all year
001AAcroleinAVERAGE report only all year
001AAcroleinMAXIMUM report only all year
001AAcrylonitrileAVERAGE report only all year
001AAcrylonitrileMAXIMUM report only all year
001AAnthraceneAVERAGE report only all year
001AAnthraceneMAXIMUM report only all year
001ABenzo[k]fluorantheneAVERAGE report only all year
001ABenzo[k]fluorantheneMAXIMUM report only all year
001ABenzo[a]pyreneAVERAGE report only all year
001ABenzo[a]pyreneMAXIMUM report only all year
001ABis[2-chloroethyl] etherAVERAGE report only all year
001ABis[2-chloroethyl] etherMAXIMUM report only all year
001ABis[2-chloroethoxy]methaneAVERAGE report only all year
001ABis[2-chloroethoxy]methaneMAXIMUM report only all year
001ABis[2-chloroisopropyl] etherAVERAGE report only all year
001ABis[2-chloroisopropyl] etherMAXIMUM report only all year
001AButyl benzyl phthalateAVERAGE report only all year
001AButyl benzyl phthalateMAXIMUM report only all year
001AChlorobenzeneAVERAGE report only all year
001AChlorobenzeneMAXIMUM report only all year
001AChlorodibromomethaneAVERAGE report only all year
001AChlorodibromomethaneMAXIMUM report only all year
001AChryseneAVERAGE report only all year
001AChryseneMAXIMUM report only all year
001ADiethyl phthalateAVERAGE report only all year
001ADiethyl phthalateMAXIMUM report only all year
001ADimethyl phthalateAVERAGE report only all year
001ADimethyl phthalateMAXIMUM report only all year
001A1,2-DiphenylhydrazineAVERAGE report only all year
001A1,2-DiphenylhydrazineMAXIMUM report only all year
001AEthylbenzeneAVERAGE report only all year
001AEthylbenzeneMAXIMUM report only all year
001AFluorantheneAVERAGE report only all year
001AFluorantheneMAXIMUM report only all year
001AFluoreneAVERAGE report only all year
001AFluoreneMAXIMUM report only all year
001AHexachlorocyclopentadieneAVERAGE report only all year
001AHexachlorocyclopentadieneMAXIMUM report only all year
001AHexachloroethaneAVERAGE report only all year
001AHexachloroethaneMAXIMUM report only all year
001AIndeno[1,2,3-cd]pyreneAVERAGE report only all year
001AIndeno[1,2,3-cd]pyreneMAXIMUM report only all year
001AIsophoroneAVERAGE report only all year
001AIsophoroneMAXIMUM report only all year
001AMethyl bromide [Bromomethane]AVERAGE report only all year
001AMethyl bromide [Bromomethane]MAXIMUM report only all year
001AMethyl chloride [Chloromethane]AVERAGE report only all year
001AMethyl chloride [Chloromethane]MAXIMUM report only all year
001AMethylene chlorideAVERAGE report only all year
001AMethylene chlorideMAXIMUM report only all year
001AN-Nitrosodi-N-propylamineAVERAGE report only all year
001AN-Nitrosodi-N-propylamineMAXIMUM report only all year
001AN-NitrosodiphenylamineAVERAGE report only all year
001AN-NitrosodiphenylamineMAXIMUM report only all year
001AN-Nitrosodimethylamine [NDMA]AVERAGE report only all year
001AN-Nitrosodimethylamine [NDMA]MAXIMUM report only all year
001ANitrobenzeneAVERAGE report only all year
001ANitrobenzeneMAXIMUM report only all year
001APhenanthreneAVERAGE report only all year
001APhenanthreneMAXIMUM report only all year
001APyreneAVERAGE report only all year
001APyreneMAXIMUM report only all year
001ATetrachloroethyleneAVERAGE report only all year
001ATetrachloroethyleneMAXIMUM report only all year
001A1,1-DichloroethaneAVERAGE report only all year
001A1,1-DichloroethaneMAXIMUM report only all year
001A1,1-DichloroethyleneAVERAGE report only all year
001A1,1-DichloroethyleneMAXIMUM report only all year
001A1,1,1-TrichloroethaneAVERAGE report only all year
001A1,1,1-TrichloroethaneMAXIMUM report only all year
001A1,1,2-TrichloroethaneAVERAGE report only all year
001A1,1,2-TrichloroethaneMAXIMUM report only all year
001A1,1,2,2-TetrachloroethaneAVERAGE report only all year
001A1,1,2,2-TetrachloroethaneMAXIMUM report only all year
001ABenzo[ghi]peryleneAVERAGE report only all year
001ABenzo[ghi]peryleneMAXIMUM report only all year
001ABenzo[a]anthraceneAVERAGE report only all year
001ABenzo[a]anthraceneMAXIMUM report only all year
001A1,2-DichlorobenzeneAVERAGE report only all year
001A1,2-DichlorobenzeneMAXIMUM report only all year
001A1,2-DichloropropaneAVERAGE report only all year
001A1,2-DichloropropaneMAXIMUM report only all year
001Atrans-1,2-DichloroethyleneAVERAGE report only all year
001Atrans-1,2-DichloroethyleneMAXIMUM report only all year
001A1,2,4-TrichlorobenzeneAVERAGE report only all year
001A1,2,4-TrichlorobenzeneMAXIMUM report only all year
001ADibenz[a,h]anthraceneAVERAGE report only all year
001ADibenz[a,h]anthraceneMAXIMUM report only all year
001A1,3-DichlorobenzeneAVERAGE report only all year
001A1,3-DichlorobenzeneMAXIMUM report only all year
001A1,4-DichlorobenzeneAVERAGE report only all year
001A1,4-DichlorobenzeneMAXIMUM report only all year
001A2-Chloroethyl vinyl ether, [mixed]AVERAGE report only all year
001A2-Chloroethyl vinyl ether, [mixed]MAXIMUM report only all year
001A2-ChloronaphthaleneAVERAGE report only all year
001A2-ChloronaphthaleneMAXIMUM report only all year
001A2-ChlorophenolAVERAGE report only all year
001A2-ChlorophenolMAXIMUM report only all year
001A2-NitrophenolAVERAGE report only all year
001A2-NitrophenolMAXIMUM report only all year
001A2,4-DichlorophenolAVERAGE report only all year
001A2,4-DichlorophenolMAXIMUM report only all year
001A2,4-DimethylphenolAVERAGE report only all year
001A2,4-DimethylphenolMAXIMUM report only all year
001A2,4-DinitrotolueneAVERAGE report only all year
001A2,4-DinitrotolueneMAXIMUM report only all year
001A2,4-DinitrophenolAVERAGE report only all year
001A2,4-DinitrophenolMAXIMUM report only all year
001A2,4,6-TrichlorophenolAVERAGE report only all year
001A2,4,6-TrichlorophenolMAXIMUM report only all year
001A2,6-DinitrotolueneAVERAGE report only all year
001A2,6-DinitrotolueneMAXIMUM report only all year
001A3,3'-DichlorobenzidineAVERAGE report only all year
001A3,3'-DichlorobenzidineMAXIMUM report only all year
001A4-Bromophenyl phenyl etherAVERAGE report only all year
001A4-Bromophenyl phenyl etherMAXIMUM report only all year
001A4-Chlorophenyl phenyl etherAVERAGE report only all year
001A4-Chlorophenyl phenyl etherMAXIMUM report only all year
001A4-NitrophenolAVERAGE report only all year
001A4-NitrophenolMAXIMUM report only all year
001A4,6-Dinitro-o-cresolAVERAGE report only all year
001A4,6-Dinitro-o-cresolMAXIMUM report only all year
001APhenolAVERAGE report only all year
001APhenolMAXIMUM report only all year
001ANaphthaleneAVERAGE report only all year
001ANaphthaleneMAXIMUM report only all year
001APentachlorophenolAVERAGE report only all year
001APentachlorophenolMAXIMUM report only all year
001ADi[2-ethylhexyl] phthalate [DEHP]AVERAGE report only all year
001ADi[2-ethylhexyl] phthalate [DEHP]MAXIMUM report only all year
001ADi-n-butyl phthalateAVERAGE report only all year
001ADi-n-butyl phthalateMAXIMUM report only all year
001ABenzidineAVERAGE report only all year
001ABenzidineMAXIMUM report only all year
001AVinyl chlorideAVERAGE report only all year
001AVinyl chlorideMAXIMUM report only all year
001ATrichloroethyleneAVERAGE report only all year
001ATrichloroethyleneMAXIMUM report only all year
001AHexachlorobenzeneAVERAGE report only all year
001AHexachlorobenzeneMAXIMUM report only all year
001AHexachlorobutadieneAVERAGE report only all year
001AHexachlorobutadieneMAXIMUM report only all year
001AChlorideAVERAGE report only all year
001AChlorideMAXIMUM report only all year
001A1,3-DichloropropyleneAVERAGE report only all year
001A1,3-DichloropropyleneMAXIMUM report only all year
001ANitrogen, Kjeldahl TotalAVERAGE report only all year
001ANitrogen, Kjeldahl TotalMAXIMUM report only all year
001ANitrite Plus Nitrate TotalAVERAGE report only all year
001ANitrite Plus Nitrate TotalMAXIMUM report only all year
001APhenolic compounds, totalAVERAGE report only all year
001APhenolic compounds, totalMAXIMUM report only all year
001ASolids, total dissolved [TDS]AVERAGE report only all year
001ASolids, total dissolved [TDS]MAXIMUM report only all year
001AMercury, total recoverableAVERAGE report only all year
001AMercury, total recoverableMAXIMUM report only all year
001A3,4-BenzofluorantheneAVERAGE report only all year
001A3,4-BenzofluorantheneMAXIMUM report only all year
001Ap-Chloro-m-cresolAVERAGE report only all year
001Ap-Chloro-m-cresolMAXIMUM report only all year
001AChloroethaneAVERAGE report only all year
001AChloroethaneMAXIMUM report only all year

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