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Science Hill STP

Sewage treatment plant, Science Hill, Kentucky. NPDES permit KY0094447, in force until Jul 31, 2031. Last 12 months: over a limit 7 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form 1 monthly (37 values), form 4 yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
7 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
December 2025Chlorine, total residual, daily maximum.04 mg/L≤ .019 mg/L111%
June 2026E. coli, 30-day geometric mean605 #/100mL≤ 130 #/100mL365%
June 2026E. coli, 7-day geometric mean2420 #/100mL≤ 240 #/100mL908%
July 2026E. coli, 30-day geometric mean333 #/100mL≤ 130 #/100mL156%
July 2026E. coli, 7-day geometric mean1733 #/100mL≤ 240 #/100mL622%
August 2026E. coli, 30-day geometric mean239 #/100mL≤ 130 #/100mL84%
August 2026E. coli, 7-day geometric mean770 #/100mL≤ 240 #/100mL221%

Limits in force (55)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitaveragereport only (deg F)Jan, Feb, Mar, Apr, Nov, Dec
Temperature, water deg. fahrenheitaveragereport only (deg F)May–Oct
Temperature, water deg. fahrenheitmaximumreport only (deg F)Jan, Feb, Mar, Apr, Nov, Dec
Temperature, water deg. fahrenheitmaximumreport only (deg F)May–Oct
Oxygen, dissolved [DO]instantaneous minimum≥ 7 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≤ 37.5 lb/dall year
Solids, total suspendeddaily maximum≤ 56.2 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≤ 4 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 6 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 5 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 12.5 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 lb/dMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 18.7 lb/dJan, Feb, Mar, Apr, Nov, Dec
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≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 31.3 lb/dall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 50 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

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/KY0094447 · MCP: https://passage-data.com/mcp