KY DOP Rough River State Park — NPDES permit KY0024431: limits, due date and EPA's record

Amusement And Recreation, Falls Of Rough, Kentucky. NPDES permit KY0024431, in force until Sep 30, 2031. Last 12 months: over a limit 5 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Outfall	Parameter	Reported	Limit	Over by
December 2025	001	Solids, total suspended, monthly average	123 mg/L	≤ 30 mg/L	310%
December 2025	001	Solids, total suspended, maximum weekly average	123 mg/L	≤ 45 mg/L	173%
December 2025	003	Solids, total suspended, monthly average	94 mg/L	≤ 30 mg/L	213%
December 2025	003	Solids, total suspended, maximum weekly average	94 mg/L	≤ 45 mg/L	109%
September 2026	003	Nitrogen, ammonia total [as N], daily minimum	1 mg/L	≥ 6 mg/L	83%

Limits in force (46)

Parameter	Statistic	Limit	Months	Outfall
Oxygen, dissolved [DO]	instantaneous minimum	≥ 7 mg/L	all year	001
pH	minimum	≥ 6 SU	all year	001
pH	daily maximum	≤ 9 SU	all year	001
Solids, total suspended	monthly average	≤ 30 mg/L	all year	001
Solids, total suspended	maximum weekly average	≤ 45 mg/L	all year	001
Oil & Grease	monthly average	report only (mg/L)	all year	001
Oil & Grease	daily maximum	report only (mg/L)	all year	001
Nitrogen, ammonia total [as N]	monthly average	≤ 4 mg/L	May–Oct	001
Nitrogen, ammonia total [as N]	monthly average	≤ 10 mg/L	Jan, Feb, Mar, Apr, Nov, Dec	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 6 mg/L	May–Oct	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 15 mg/L	Jan, Feb, Mar, Apr, Nov, Dec	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
Chlorine, total residual	monthly average	≤ .011 mg/L	all year	001
Chlorine, total residual	daily maximum	≤ .019 mg/L	all year	001
E. coli	30-day geometric mean	≤ 130 #/100mL	all year	001
E. coli	7-day geometric mean	≤ 240 #/100mL	all year	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 30 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	maximum weekly average	≤ 45 mg/L	all year	001
Oxygen, dissolved [DO]	instantaneous minimum	≥ 7 mg/L	all year	003
pH	minimum	≥ 6 SU	all year	003
pH	daily maximum	≤ 9 SU	all year	003
Solids, total suspended	monthly average	≤ 30 mg/L	all year	003
Solids, total suspended	maximum weekly average	≤ 45 mg/L	all year	003
Oil & Grease	monthly average	report only (mg/L)	all year	003
Oil & Grease	daily maximum	report only (mg/L)	all year	003
Nitrogen, ammonia total [as N]	monthly average	≤ 4 mg/L	May–Oct	003
Nitrogen, ammonia total [as N]	monthly average	≤ 10 mg/L	Jan, Feb, Mar, Apr, Nov, Dec	003
Nitrogen, ammonia total [as N]	daily maximum	≤ 6 mg/L	May–Oct	003
Nitrogen, ammonia total [as N]	daily maximum	≤ 15 mg/L	Jan, Feb, Mar, Apr, Nov, Dec	003
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	003
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	003
Chlorine, total residual	monthly average	≤ .011 mg/L	all year	003
Chlorine, total residual	daily maximum	≤ .019 mg/L	all year	003
E. coli	30-day geometric mean	≤ 130 #/100mL	all year	003
E. coli	7-day geometric mean	≤ 240 #/100mL	all year	003
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 30 mg/L	all year	003
BOD, carbonaceous [5 day, 20 C]	maximum weekly average	≤ 45 mg/L	all year	003
pH	minimum	≥ 6 SU	all year	004
pH	maximum	≤ 9 SU	all year	004
Solids, total suspended	monthly average	report only (mg/L)	all year	004
Solids, total suspended	daily maximum	≤ 60 mg/L	all year	004
Oil & Grease	monthly average	report only (mg/L)	all year	004
Oil & Grease	daily maximum	≤ 15 mg/L	all year	004
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	004
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	004

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/KY0024431 · MCP: https://passage-data.com/mcp