Washington County Public Schools — NPDES permit VA0026778: limits, due date and EPA's record

NPDES permit VA0026778 · Minor POTW · effective, expires 2029-10-31 · 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

Reporting

Reports are due about 10 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (21)

Outfall	Parameter	Statistic	Limit	Months
001	Oxygen, dissolved [DO]	DAILY MN	>= 5.5 mg/L	all year
001	BOD, 5-day, 20 deg. C	MO AVG	<= 24 mg/L	all year
001	BOD, 5-day, 20 deg. C	WKLY AVG	<= 36 mg/L	all year
001	BOD, 5-day, 20 deg. C	MO AVG	<= .7 kg/d	all year
001	BOD, 5-day, 20 deg. C	WKLY AVG	<= 1.1 kg/d	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 AVG	<= 45 mg/L	all year
001	Solids, total suspended	MO AVG	<= .9 kg/d	all year
001	Solids, total suspended	WKLY AVG	<= 1.4 kg/d	all year
001	Nitrogen, ammonia total [as N]	MO AVG	<= 13 mg/L	Jun, Jul, Aug, Sep, Oct, Nov, Dec
001	Nitrogen, ammonia total [as N]	MO AVG	report only	Jan, Feb, Mar, Apr, May
001	Nitrogen, ammonia total [as N]	MAXIMUM	<= 13 mg/L	Jun, Jul, Aug, Sep, Oct, Nov, Dec
001	Nitrogen, ammonia total [as N]	WKLY AVG	report only	Jan, Feb, Mar, Apr, May
001	Flow, in conduit or thru treatment plant	MO AVG	<= .008 MGD (alert)	all year
001	Flow, in conduit or thru treatment plant	MAXIMUM	report only (alert)	all year
001	Chlorine, total residual	MO AVG	<= .056 mg/L	all year
001	Chlorine, total residual	WKLY AVG	<= .07 mg/L	all year
001	Chlorine, total residual	INST MIN	>= .6 mg/L	all year
001	E. coli	GEO MEAN	<= 126 #/100mL	all year