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Coolbrook WWTP

Sewage treatment plant, Frankfort, Kentucky. NPDES permit KY0044351, in force until Aug 31, 2030. Last 12 months: over a limit 51 times (last August 2026), 15 required values missing, 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form 1 monthly (15 values), form 4 yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
85 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 51 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], maximum weekly average33 mg/L≤ 30 mg/L10%
October 2025E. coli, 30-day geometric mean1204.75 #/100mL≤ 130 #/100mL827%
October 2025E. coli, 7-day geometric mean2420 #/100mL≤ 240 #/100mL908%
October 2025Nitrogen, ammonia total [as N], daily maximum27.2 mg/L≤ 6 mg/L353%
October 2025Nitrogen, ammonia total [as N], monthly average5.64 mg/L≤ 4 mg/L41%
October 2025Oxygen, dissolved [DO], instantaneous minimum4.9 mg/L≥ 7 mg/L30%
October 2025pH, minimum5.82 SU≥ 6 SU—
November 2025E. coli, 30-day geometric mean1733 #/100mL≤ 130 #/100mL1233%
November 2025Oxygen, dissolved [DO], instantaneous minimum6 mg/L≥ 7 mg/L14%
November 2025pH, minimum5.78 SU≥ 6 SU—
December 2025BOD, carbonaceous [5 day, 20 C], monthly average36.5 mg/L≤ 20 mg/L83%
December 2025BOD, carbonaceous [5 day, 20 C], maximum weekly average50 mg/L≤ 30 mg/L67%
December 2025E. coli, 30-day geometric mean2420 #/100mL≤ 130 #/100mL1762%
December 2025E. coli, 7-day geometric mean2420 #/100mL≤ 240 #/100mL908%
December 2025Nitrogen, ammonia total [as N], daily maximum40 mg/L≤ 15 mg/L167%
December 2025Nitrogen, ammonia total [as N], monthly average21.47 mg/L≤ 10 mg/L115%
December 2025Oxygen, dissolved [DO], instantaneous minimum6.9 mg/L≥ 7 mg/L1%
December 2025Solids, total suspended, monthly average148 mg/L≤ 30 mg/L393%
December 2025Solids, total suspended, maximum weekly average196 mg/L≤ 45 mg/L336%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average45 mg/L≤ 20 mg/L125%
February 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average45 mg/L≤ 30 mg/L50%
February 2026E. coli, 30-day geometric mean2420 #/100mL≤ 130 #/100mL1762%
February 2026E. coli, 7-day geometric mean2420 #/100mL≤ 240 #/100mL908%
February 2026Nitrogen, ammonia total [as N], daily maximum27.3 mg/L≤ 15 mg/L82%
February 2026Nitrogen, ammonia total [as N], monthly average27.3 mg/L≤ 10 mg/L173%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average62 mg/L≤ 20 mg/L210%
April 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average62 mg/L≤ 30 mg/L107%
April 2026E. coli, 30-day geometric mean2420 #/100mL≤ 130 #/100mL1762%
April 2026E. coli, 7-day geometric mean2420 #/100mL≤ 240 #/100mL908%
April 2026Nitrogen, ammonia total [as N], daily maximum71 mg/L≤ 15 mg/L373%
April 2026Nitrogen, ammonia total [as N], monthly average71 mg/L≤ 10 mg/L610%
April 2026Oxygen, dissolved [DO], instantaneous minimum1.5 mg/L≥ 7 mg/L79%
April 2026Solids, total suspended, monthly average37.4 mg/L≤ 30 mg/L25%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average131 mg/L≤ 20 mg/L555%
May 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average131 mg/L≤ 30 mg/L337%
May 2026Nitrogen, ammonia total [as N], daily maximum21.1 mg/L≤ 6 mg/L252%
May 2026Nitrogen, ammonia total [as N], monthly average21.1 mg/L≤ 4 mg/L428%
May 2026Oxygen, dissolved [DO], instantaneous minimum6.9 mg/L≥ 7 mg/L1%
May 2026Solids, total suspended, monthly average38 mg/L≤ 30 mg/L27%
June 2026E. coli, 30-day geometric mean2420 #/100mL≤ 130 #/100mL1762%
June 2026E. coli, 7-day geometric mean2420 #/100mL≤ 240 #/100mL908%
June 2026Nitrogen, ammonia total [as N], monthly average5.25 mg/L≤ 4 mg/L31%
June 2026Oxygen, dissolved [DO], instantaneous minimum3.9 mg/L≥ 7 mg/L44%
July 2026BOD, carbonaceous [5 day, 20 C], monthly average120 mg/L≤ 20 mg/L500%
July 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average120 mg/L≤ 30 mg/L300%
July 2026Oxygen, dissolved [DO], instantaneous minimum6.5 mg/L≥ 7 mg/L7%
August 2026E. coli, 30-day geometric mean2420 #/100mL≤ 130 #/100mL1762%
August 2026E. coli, 7-day geometric mean2420 #/100mL≤ 240 #/100mL908%
August 2026Nitrogen, ammonia total [as N], daily maximum42 mg/L≤ 6 mg/L600%
August 2026Nitrogen, ammonia total [as N], monthly average42 mg/L≤ 4 mg/L950%
August 2026Oxygen, dissolved [DO], instantaneous minimum4.6 mg/L≥ 7 mg/L34%

Limits in force (19)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 7 mg/Lall year
pHminimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Oil & Greasemonthly averagereport only (mg/L)all year
Oil & Greasedaily 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
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
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 30 mg/Lall year

How strict are these limits?

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/KY0044351 · MCP: https://passage-data.com/mcp