Jefferson County Public Sewer District — NPDES permit MO0139777: limits, due date and EPA's record

NPDES permit MO0139777 · Minor POTW · effective, expires 2029-04-30 · EPA's file as of 2026-09-19

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

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among MO permits in EPA's filings — check your permit).

Limits in force (24)

Outfall	Parameter	Statistic	Limit	Months
001	Oxygen, dissolved [DO]	DAILY MN	report only	Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001	Oxygen, dissolved [DO]	MO AV MN	report only	Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001	BOD, 5-day, 20 deg. C	WKLY AVG	<= 45 mg/L	all year
001	BOD, 5-day, 20 deg. C	MO AVG	<= 30 mg/L	all year
001	pH	MINIMUM	>= 6.5 SU	all year
001	pH	MAXIMUM	<= 9 SU	all year
001	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
001	Solids, total suspended	MO AVG	<= 30 mg/L	all year
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Jan, Feb, Mar
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Jul, Aug, Sep
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Oct, Nov, Dec
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Apr, May, Jun
001	Nitrogen, ammonia total [as N]	MO AVG	<= 3.1 mg/L	Jan, Feb, Mar
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Jul, Aug, Sep
001	Nitrogen, ammonia total [as N]	MO AVG	<= 2.9 mg/L	Oct, Nov, Dec
001	Nitrogen, ammonia total [as N]	MO AVG	<= 2 mg/L	Apr, May, Jun
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	E. coli	7 DA GEO	<= 630 #/100mL	Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001	E. coli	30DA GM	<= 126 #/100mL	Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001	BOD, 5-day, percent removal	MO AV MN	>= 85 %	all year
001	Solids, suspended percent removal	MO AV MN	>= 85 %	all year
INF	BOD, 5-day, 20 deg. C	MO AVG	report only	all year
INF	Solids, total suspended	MO AVG	report only	all year