TOWN OF VALIER — NPDES permit MT0021792: limits, due date and EPA's record

NPDES permit MT0021792 · Minor POTW · effective, expires 2027-02-28 · EPA's file as of 2026-09-19

Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

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

Last period with anything received: 2026-07-31. Most often over: E. coli, MTEC-MF (2), BOD, 5-day, percent removal (1), Solids, suspended percent removal (1).

Reporting

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

Limits in force (22)

Outfall	Parameter	Statistic	Limit	Months
001	Flow rate	MO AVG	report only	all year
001	Flow rate	DAILY MX	report only	all year
001	BOD, 5-day, 20 deg. C	MO AVG	<= 30 mg/L	all year
001	BOD, 5-day, 20 deg. C	WKLY MAX	<= 45 mg/L	all year
001	BOD, 5-day, 20 deg. C	MO AVG	<= 9 lb/d	all year
001	BOD, 5-day, 20 deg. C	WKLY MAX	<= 13 lb/d	all year
001	BOD, 5-day, 20 deg. C	MO AVG	report only	all year
001	pH	DAILY MN	>= 6 SU	all year
001	pH	DAILY MX	<= 9 SU	all year
001	Solids, total suspended	MO AVG	<= 30 mg/L	all year
001	Solids, total suspended	WKLY MAX	<= 45 mg/L	all year
001	Solids, total suspended	MO AVG	<= 9 lb/d	all year
001	Solids, total suspended	WKLY MAX	<= 13 lb/d	all year
001	Solids, total suspended	MO AVG	report only	all year
001	Oil & Grease	MO MAX	<= 10 mg/L	all year
001	E. coli, MTEC-MF	MOAV GEO	<= 630 #/100mL	all year
001	E. coli, MTEC-MF	MOAV GEO	<= 126 #/100mL	Apr, May, Jun, Jul, Aug, Sep, Oct
001	E. coli, MTEC-MF	MV	<= 1260 #/100mL	all year
001	E. coli, MTEC-MF	MV	<= 252 #/100mL	Apr, May, Jun, Jul, Aug, Sep, Oct
001	BOD, 5-day, percent removal	MINIMUM	>= 85 %	all year
001	Solids, suspended percent removal	MINIMUM	>= 85 %	all year
001	Oil and grease visual	VALUE	report only	all year