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Elkhorn City STP

Sewage treatment plant, Elkhorn City, Kentucky. NPDES permit KY0020958, in force until Sep 30, 2027. Last 12 months: over a limit 5 times (last August 2026), 2 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form 1 monthly (35 values), form 4 yearly
Renewal application due
Apr 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 13 reports late

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

Period endingParameterReportedLimitOver by
February 2026BOD, carb-5 day, 20 deg C, percent removal, monthly average minimum77 %≥ 85 %53%
July 2026BOD, carb-5 day, 20 deg C, percent removal, monthly average minimum82 %≥ 85 %20%
August 2026BOD, carb-5 day, 20 deg C, percent removal, monthly average minimum59 %≥ 85 %173%
August 2026BOD, carbonaceous [5 day, 20 C], monthly average36.75 mg/L≤ 30 mg/L23%
August 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average88 mg/L≤ 45 mg/L96%

Limits in force (47)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitaveragereport only (deg F)all year
Temperature, water deg. fahrenheitmaximumreport only (deg F)all year
Oxygen, dissolved [DO]instantaneous minimum≥ 2 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 96.38 lb/dall year
Solids, total suspendedmaximum weekly average≤ 144.57 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmaximum weekly averagereport only (mg/L)all year
Oil & Greaseaveragereport only (mg/L)all year
Oil & Greasemaximumreport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 20 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 30 mg/Lall year
Phosphorus, total [as P]averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]maximumreport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ .011 mg/Lall year
Chlorine, total residualdaily maximum≤ .019 mg/Lall year
E. coli30-day geometric mean≤ 130 #/100mLall year
E. coli7-day geometric mean≤ 240 #/100mLall year
Nitrogen, Kjeldahl Totalaveragereport only (mg/L)all year
Nitrogen, Kjeldahl Totalmaximumreport only (mg/L)all year
Nitrite Plus Nitrate Totalaveragereport only (mg/L)all year
Nitrite Plus Nitrate Totalmaximumreport only (mg/L)all year
Solids, total dissolved [TDS]averagereport only (mg/L)all year
Solids, total dissolved [TDS]maximumreport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 30 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 45 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 9638 lb/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 144.57 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]maximum weekly averagereport only (mg/L)all year
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

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/KY0020958 · MCP: https://passage-data.com/mcp