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Ashland STP

Sewage treatment plant, major discharger, Ashland, Kentucky. NPDES permit KY0022373 expired Apr 30, 2021; its limits still apply. Last 12 months: over a limit 5 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form 1 monthly (34 values), outfall 002 form C monthly (3 values), outfall 004 form C monthly (3 values), outfall 006 form C monthly (3 values), outfall 008 form C monthly (3 values), outfall 009 form C monthly (3 values), and 5 more forms
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 110 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
March 2026Nitrogen, ammonia total [as N], daily maximum31.1 mg/L≤ 30 mg/L4%
July 2026Nitrogen, ammonia total [as N], daily maximum40.6 mg/L≤ 30 mg/L35%
August 2026Nitrogen, ammonia total [as N], daily maximum31.9 mg/L≤ 30 mg/L6%
August 2026Nitrogen, ammonia total [as N], monthly average21.6 mg/L≤ 20 mg/L8%
September 2026Nitrogen, ammonia total [as N], daily maximum30.8 mg/L≤ 30 mg/L3%

Limits in force (271)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitaveragereport only (deg F)all year001
Temperature, water deg. fahrenheitmaximumreport only (deg F)all year001
Precipitation, total defined period/inmonthly totalreport only (in)all year001
Oxygen, dissolved [DO]instantaneous minimum≥ 2 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 2752 lb/dall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 4128 lb/dall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmaximum weekly averagereport only (mg/L)all year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 2752 lb/dall year001
Solids, total suspendedmaximum weekly average≤ 4128 lb/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendedmaximum weekly averagereport only (mg/L)all year001
Oil & Greaseaveragereport only (mg/L)all year001
Oil & Greasemaximumreport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 20 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 30 mg/Lall year001
Phosphorus, total [as P]averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]maximumreport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Cyanide, free [amenable to chlorination]averagereport only (mg/L)all year001
Cyanide, free [amenable to chlorination]monthly average≤ .022 mg/Lall year001
Cyanide, free [amenable to chlorination]maximumreport only (mg/L)all year001
Cyanide, free [amenable to chlorination]daily maximum≤ .022 mg/Lall year001
Hardness, total [as CaCO3]averagereport only (mg/L)all year001
Hardness, total [as CaCO3]maximumreport only (mg/L)all year001
Arsenic, total recoverableaveragereport only (mg/L)all year001
Arsenic, total recoverablemaximumreport only (mg/L)all year001
Selenium, total recoverableaveragereport only (mg/L)all year001
Selenium, total recoverablemaximumreport only (mg/L)all year001
Thallium, total recoverableaveragereport only (mg/L)all year001
Thallium, total recoverablemaximumreport only (mg/L)all year001
Beryllium, total recoverable [as Be]averagereport only (mg/L)all year001
Beryllium, total recoverable [as Be]maximumreport only (mg/L)all year001
Nickel, total recoverableaveragereport only (mg/L)all year001
Nickel, total recoverablemaximumreport only (mg/L)all year001
Silver total recoverableaveragereport only (mg/L)all year001
Silver total recoverablemaximumreport only (mg/L)all year001
Zinc, total recoverableaveragereport only (mg/L)all year001
Zinc, total recoverablemaximumreport only (mg/L)all year001
Cadmium, total recoverableaveragereport only (mg/L)all year001
Cadmium, total recoverablemaximumreport only (mg/L)all year001
Lead, total recoverableaveragereport only (mg/L)all year001
Lead, total recoverablemaximumreport only (mg/L)all year001
Chromium, total recoverableaveragereport only (mg/L)all year001
Chromium, total recoverablemaximumreport only (mg/L)all year001
Copper, total recoverableaveragereport only (mg/L)all year001
Copper, total recoverablemaximumreport only (mg/L)all year001
Antimony, total recoverableaveragereport only (mg/L)all year001
Antimony, total recoverablemaximumreport only (mg/L)all year001
Dichlorobromomethaneaveragereport only (ug/L)all year001
Dichlorobromomethanemaximumreport only (ug/L)all year001
Carbon tetrachlorideaveragereport only (ug/L)all year001
Carbon tetrachloridemaximumreport only (ug/L)all year001
1,2-Dichloroethaneaveragereport only (ug/L)all year001
1,2-Dichloroethanemaximumreport only (ug/L)all year001
Bromoformaveragereport only (ug/L)all year001
Bromoformmaximumreport only (ug/L)all year001
Chloroformaveragereport only (ug/L)all year001
Chloroformmaximumreport only (ug/L)all year001
Tolueneaveragereport only (ug/L)all year001
Toluenemaximumreport only (ug/L)all year001
Benzeneaveragereport only (ug/L)all year001
Benzenemaximumreport only (ug/L)all year001
Acenaphthyleneaveragereport only (ug/L)all year001
Acenaphthylenemaximumreport only (ug/L)all year001
Acenaphtheneaveragereport only (ug/L)all year001
Acenaphthenemaximumreport only (ug/L)all year001
Acroleinaveragereport only (ug/L)all year001
Acroleinmaximumreport only (ug/L)all year001
Acrylonitrileaveragereport only (ug/L)all year001
Acrylonitrilemaximumreport only (ug/L)all year001
Anthraceneaveragereport only (ug/L)all year001
Anthracenemaximumreport only (ug/L)all year001
Benzo[k]fluorantheneaveragereport only (ug/L)all year001
Benzo[k]fluoranthenemaximumreport only (ug/L)all year001
Benzo[a]pyreneaveragereport only (ug/L)all year001
Benzo[a]pyrenemaximumreport only (ug/L)all year001
Bis[2-chloroethyl] etheraveragereport only (ug/L)all year001
Bis[2-chloroethyl] ethermaximumreport only (ug/L)all year001
Bis[2-chloroethoxy]methaneaveragereport only (ug/L)all year001
Bis[2-chloroethoxy]methanemaximumreport only (ug/L)all year001
Bis[2-chloroisopropyl] etheraveragereport only (ug/L)all year001
Bis[2-chloroisopropyl] ethermaximumreport only (ug/L)all year001
Butyl benzyl phthalateaveragereport only (ug/L)all year001
Butyl benzyl phthalatemaximumreport only (ug/L)all year001
Chlorobenzeneaveragereport only (ug/L)all year001
Chlorobenzenemaximumreport only (ug/L)all year001
Chlorodibromomethaneaveragereport only (ug/L)all year001
Chlorodibromomethanemaximumreport only (ug/L)all year001
Chryseneaveragereport only (ug/L)all year001
Chrysenemaximumreport only (ug/L)all year001
Diethyl phthalateaveragereport only (ug/L)all year001
Diethyl phthalatemaximumreport only (ug/L)all year001
Dimethyl phthalateaveragereport only (ug/L)all year001
Dimethyl phthalatemaximumreport only (ug/L)all year001
1,2-Diphenylhydrazineaveragereport only (ug/L)all year001
1,2-Diphenylhydrazinemaximumreport only (ug/L)all year001
Ethylbenzeneaveragereport only (ug/L)all year001
Ethylbenzenemaximumreport only (ug/L)all year001
Fluorantheneaveragereport only (ug/L)all year001
Fluoranthenemaximumreport only (ug/L)all year001
Fluoreneaveragereport only (ug/L)all year001
Fluorenemaximumreport only (ug/L)all year001
Hexachlorocyclopentadieneaveragereport only (ug/L)all year001
Hexachlorocyclopentadienemaximumreport only (ug/L)all year001
Hexachloroethaneaveragereport only (ug/L)all year001
Hexachloroethanemaximumreport only (ug/L)all year001
Indeno[1,2,3-cd]pyreneaveragereport only (ug/L)all year001
Indeno[1,2,3-cd]pyrenemaximumreport only (ug/L)all year001
Isophoroneaveragereport only (ug/L)all year001
Isophoronemaximumreport only (ug/L)all year001
Methyl bromide [Bromomethane]averagereport only (ug/L)all year001
Methyl bromide [Bromomethane]maximumreport only (ug/L)all year001
Methyl chloride [Chloromethane]averagereport only (ug/L)all year001
Methyl chloride [Chloromethane]maximumreport only (ug/L)all year001
Methylene chlorideaveragereport only (ug/L)all year001
Methylene chloridemaximumreport only (ug/L)all year001
N-Nitrosodi-N-propylamineaveragereport only (ug/L)all year001
N-Nitrosodi-N-propylaminemaximumreport only (ug/L)all year001
N-Nitrosodiphenylamineaveragereport only (ug/L)all year001
N-Nitrosodiphenylaminemaximumreport only (ug/L)all year001
N-Nitrosodimethylamine [NDMA]averagereport only (ug/L)all year001
N-Nitrosodimethylamine [NDMA]maximumreport only (ug/L)all year001
Nitrobenzeneaveragereport only (ug/L)all year001
Nitrobenzenemaximumreport only (ug/L)all year001
Phenanthreneaveragereport only (ug/L)all year001
Phenanthrenemaximumreport only (ug/L)all year001
Pyreneaveragereport only (ug/L)all year001
Pyrenemaximumreport only (ug/L)all year001
Tetrachloroethyleneaveragereport only (ug/L)all year001
Tetrachloroethylenemaximumreport only (ug/L)all year001
1,1-Dichloroethaneaveragereport only (ug/L)all year001
1,1-Dichloroethanemaximumreport only (ug/L)all year001
1,1-Dichloroethyleneaveragereport only (ug/L)all year001
1,1-Dichloroethylenemaximumreport only (ug/L)all year001
1,1,1-Trichloroethaneaveragereport only (ug/L)all year001
1,1,1-Trichloroethanemaximumreport only (ug/L)all year001
1,1,2-Trichloroethaneaveragereport only (ug/L)all year001
1,1,2-Trichloroethanemaximumreport only (ug/L)all year001
1,1,2,2-Tetrachloroethaneaveragereport only (mg/L)all year001
1,1,2,2-Tetrachloroethanemaximumreport only (mg/L)all year001
Benzo[ghi]peryleneaveragereport only (ug/L)all year001
Benzo[ghi]perylenemaximumreport only (ug/L)all year001
Benzo[a]anthraceneaveragereport only (ug/L)all year001
Benzo[a]anthracenemaximumreport only (ug/L)all year001
1,2-Dichlorobenzeneaveragereport only (ug/L)all year001
1,2-Dichlorobenzenemaximumreport only (ug/L)all year001
1,2-Dichloropropaneaveragereport only (ug/L)all year001
1,2-Dichloropropanemaximumreport only (ug/L)all year001
trans-1,2-Dichloroethyleneaveragereport only (ug/L)all year001
trans-1,2-Dichloroethylenemaximumreport only (ug/L)all year001
1,2,4-Trichlorobenzeneaveragereport only (ug/L)all year001
1,2,4-Trichlorobenzenemaximumreport only (ug/L)all year001
Dibenz[a,h]anthraceneaveragereport only (ug/L)all year001
Dibenz[a,h]anthracenemaximumreport only (ug/L)all year001
1,3-Dichlorobenzeneaveragereport only (ug/L)all year001
1,3-Dichlorobenzenemaximumreport only (ug/L)all year001
1,4-Dichlorobenzeneaveragereport only (ug/L)all year001
1,4-Dichlorobenzenemaximumreport only (ug/L)all year001
2-Chloroethyl vinyl ether, [mixed]averagereport only (ug/L)all year001
2-Chloroethyl vinyl ether, [mixed]maximumreport only (ug/L)all year001
2-Chloronaphthaleneaveragereport only (ug/L)all year001
2-Chloronaphthalenemaximumreport only (ug/L)all year001
2-Chlorophenolaveragereport only (ug/L)all year001
2-Chlorophenolmaximumreport only (ug/L)all year001
2-Nitrophenolaveragereport only (ug/L)all year001
2-Nitrophenolmaximumreport only (ug/L)all year001
2,4-Dichlorophenolaveragereport only (ug/L)all year001
2,4-Dichlorophenolmaximumreport only (ug/L)all year001
2,4-Dimethylphenolaveragereport only (ug/L)all year001
2,4-Dimethylphenolmaximumreport only (ug/L)all year001
2,4-Dinitrotolueneaveragereport only (ug/L)all year001
2,4-Dinitrotoluenemaximumreport only (ug/L)all year001
2,4-Dinitrophenolaveragereport only (ug/L)all year001
2,4-Dinitrophenolmaximumreport only (ug/L)all year001
2,4,6-Trichlorophenolaveragereport only (ug/L)all year001
2,4,6-Trichlorophenolmaximumreport only (ug/L)all year001
2,6-Dinitrotolueneaveragereport only (ug/L)all year001
2,6-Dinitrotoluenemaximumreport only (ug/L)all year001
3,3'-Dichlorobenzidineaveragereport only (ug/L)all year001
3,3'-Dichlorobenzidinemaximumreport only (ug/L)all year001
4-Bromophenyl phenyl etheraveragereport only (ug/L)all year001
4-Bromophenyl phenyl ethermaximumreport only (ug/L)all year001
4-Chlorophenyl phenyl etheraveragereport only (ug/L)all year001
4-Chlorophenyl phenyl ethermaximumreport only (ug/L)all year001
4-Nitrophenolaveragereport only (ug/L)all year001
4-Nitrophenolmaximumreport only (ug/L)all year001
4,6-Dinitro-o-cresolaveragereport only (ug/L)all year001
4,6-Dinitro-o-cresolmaximumreport only (ug/L)all year001
Phenolaveragereport only (ug/L)all year001
Phenolmaximumreport only (ug/L)all year001
Naphthaleneaveragereport only (ug/L)all year001
Naphthalenemaximumreport only (ug/L)all year001
Pentachlorophenolaveragereport only (ug/L)all year001
Pentachlorophenolmaximumreport only (ug/L)all year001
Di[2-ethylhexyl] phthalate [DEHP]averagereport only (ug/L)all year001
Di[2-ethylhexyl] phthalate [DEHP]maximumreport only (ug/L)all year001
Di-n-butyl phthalateaveragereport only (ug/L)all year001
Di-n-butyl phthalatemaximumreport only (ug/L)all year001
Benzidineaveragereport only (ug/L)all year001
Benzidinemaximumreport only (ug/L)all year001
Vinyl chlorideaveragereport only (ug/L)all year001
Vinyl chloridemaximumreport only (ug/L)all year001
Trichloroethyleneaveragereport only (ug/L)all year001
Trichloroethylenemaximumreport only (ug/L)all year001
Hexachlorobenzeneaveragereport only (ug/L)all year001
Hexachlorobenzenemaximumreport only (ug/L)all year001
Hexachlorobutadieneaveragereport only (ug/L)all year001
Hexachlorobutadienemaximumreport only (ug/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year001
Chlorine, total residualmonthly average≤ .019 mg/Lall year001
Chlorine, total residualdaily maximum≤ .019 mg/Lall year001
E. coli30-day geometric mean≤ 130 #/100mLall year001
E. coli7-day geometric mean≤ 240 #/100mLall year001
Nitrogen, Kjeldahl Totalaveragereport only (mg/L)all year001
Nitrogen, Kjeldahl Totalmaximumreport only (mg/L)all year001
Nitrite Plus Nitrate Totalaveragereport only (mg/L)all year001
Nitrite Plus Nitrate Totalmaximumreport only (mg/L)all year001
Toxicity, final conc toxicity unitsmaximum≤ 1 tox acuteall year001
Phenolic compounds, totalaveragereport only (mg/L)all year001
Phenolic compounds, totalmaximumreport only (mg/L)all year001
Solids, total dissolved [TDS]averagereport only (mg/L)all year001
Solids, total dissolved [TDS]maximumreport only (mg/L)all year001
Mercury, total recoverableaveragereport only (mg/L)all year001
Mercury, total recoverablemaximumreport only (mg/L)all year001
1,3-Dichloropropeneaveragereport only (ug/L)all year001
1,3-Dichloropropenemaximumreport only (ug/L)all year001
3,4-Benzofluorantheneaveragereport only (ug/L)all year001
3,4-Benzofluoranthenemaximumreport only (ug/L)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
p-Chloro-m-cresolaveragereport only (ug/L)all year001
p-Chloro-m-cresolmaximumreport only (ug/L)all year001
Chloroethaneaveragereport only (ug/L)all year001
Chloroethanemaximumreport only (ug/L)all year001
Durationmonthly totalreport only (hr/mo)all year002
Overflowsmonthly totalreport only (#/mo)all year002
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year002
Durationmonthly totalreport only (hr/mo)all year004
Overflowsmonthly totalreport only (#/mo)all year004
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year004
Durationmonthly totalreport only (hr/mo)all year006
Overflowsmonthly totalreport only (#/mo)all year006
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year006
Durationmonthly totalreport only (hr/mo)all year008
Overflowsmonthly totalreport only (#/mo)all year008
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year008
Durationmonthly totalreport only (hr/mo)all year009
Overflowsmonthly totalreport only (#/mo)all year009
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year009
Durationmonthly totalreport only (hr/mo)all year010
Overflowsmonthly totalreport only (#/mo)all year010
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year010
Durationmonthly totalreport only (hr/mo)all year012
Overflowsmonthly totalreport only (#/mo)all year012
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year012
Durationmonthly totalreport only (hr/mo)all year014
Overflowsmonthly totalreport only (#/mo)all year014
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year014

Cited limits by parameter: Kentucky's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/KY0022373 · MCP: https://passage-data.com/mcp