City of Cherokee — NPDES permit OK0020052: limits, due date and EPA's record

NPDES permit OK0020052 · Minor POTW · effective, expires 2027-12-31 · EPA's file as of 2026-09-19

EPA's record, 2025-09-01 to 2026-08-31

Last period with anything received: 2026-07-31. Most often over: pH (9), Solids, total suspended (6).

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among OK permits in EPA's filings — check your permit).

Limits in force (16)

Outfall	Parameter	Statistic	Limit	Months
001	BOD, 5-day, 20 deg. C	MO AVG	<= 20 mg/L	all year
001	BOD, 5-day, 20 deg. C	WKLY AVG	<= 30 mg/L	all year
001	BOD, 5-day, 20 deg. C	MO AVG	<= 66.7 lb/d	all year
001	pH	MINIMUM	>= 6.5 SU	all year
001	pH	MAXIMUM	<= 9 SU	all year
001	Solids, total suspended	MO AVG	<= 30 mg/L	all year
001	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
001	Solids, total suspended	MO AVG	<= 100.1 lb/d	all year
001	Phosphorus, total [as P]	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Chlorine, total residual	INST MAX	<= .099 mg/L	all year
001	E. coli	GEO MEAN	<= 126 MPN/100mL	May, Jun, Jul, Aug, Sep
001	E. coli	GEO MEAN	<= 630 MPN/100mL	Jan, Feb, Mar, Apr, Oct, Nov, Dec
001	E. coli	DAILY MX	<= 1175 MPN/100mL	Jan, Feb, Mar, Apr, Oct, Nov, Dec
001	E. coli	DAILY MX	<= 235 MPN/100mL	May, Jun, Jul, Aug, Sep