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Persimmon Ridge WWTF

Subdividers And Developers, Louisville, Kentucky. NPDES permit KY0090956, in force until Sep 30, 2028. Last 12 months: over a limit 10 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form 1 monthly (17 values), form 4 yearly
Renewal application due
Apr 3, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
14 values over a limit, 0 required values missing, 1 of 13 reports late

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

Period endingParameterReportedLimitOver by
January 2026BOD, carbonaceous [5 day, 20 C], maximum monthly average19 mg/L≤ 10 mg/L90%
January 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average24 mg/L≤ 15 mg/L60%
January 2026Nitrogen, ammonia total [as N], daily maximum10.4 mg/L≤ 7.5 mg/L39%
January 2026Nitrogen, ammonia total [as N], maximum monthly average9.86 mg/L≤ 5 mg/L97%
February 2026BOD, carbonaceous [5 day, 20 C], maximum monthly average14 mg/L≤ 10 mg/L40%
February 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average16 mg/L≤ 15 mg/L7%
February 2026Nitrogen, ammonia total [as N], daily maximum15.2 mg/L≤ 7.5 mg/L103%
February 2026Nitrogen, ammonia total [as N], maximum monthly average15.15 mg/L≤ 5 mg/L203%
March 2026Nitrogen, ammonia total [as N], daily maximum10.5 mg/L≤ 7.5 mg/L40%
March 2026Nitrogen, ammonia total [as N], maximum monthly average9.475 mg/L≤ 5 mg/L90%

Limits in force (21)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 7 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmaximum monthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Oil & Greasemaximum monthly averagereport only (mg/L)all year
Oil & Greasedaily maximumreport only (mg/L)all year
Nitrogen, total [as N]maximum monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]maximum monthly average≤ 2 mg/LMay–Oct
Nitrogen, ammonia total [as N]maximum monthly average≤ 5 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 mg/LJan, Feb, Mar, Apr, Nov, Dec
Phosphorus, total [as P]maximum monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantmaximum monthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
E. coli30-day geometric mean≤ 130 #/100mLall year
E. coli7-day geometric mean≤ 240 #/100mLall year
BOD, carbonaceous [5 day, 20 C]maximum monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/Lall year

How strict are these limits?

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

Same industry: the 141 Real Estate permits in Kentucky.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/KY0090956 · MCP: https://passage-data.com/mcp