Port Washington City

NPDES permit WI0020460 · Major POTW · expired, expires 2026-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2026-03-31 and is expired: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

0values over a limit
17required values missing, on 3 form(s)
19of 46 forms filed late

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 21 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (25)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Nitrogen, total [as N]QB report only all year
001Nitrogen, Kjeldahl, total [as N]QB report only all year
001Nitrite + Nitrate total [as N]QB report only all year
001Phosphorus, total [as P]MO AVG <= .9 mg/L all year
001Arsenic, total recoverableQB report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantMO MAX report only all year
001Mercury, total recoverableDAILY MX <= 3.8 ng/L all year
101Flow, in conduit or thru treatment plantMO AVG report only all year
101Flow, in conduit or thru treatment plantMO MAX report only all year
110Mercury, total recoverableQB report only all year
120Arsenic, total recoverableQB report only all year
701BOD, 5-day, 20 deg. CMO AVG report only all year
701BOD, 5-day, 20 deg. CMO MAX report only all year
701Solids, total suspendedMO AVG report only all year
701Solids, total suspendedMO MAX report only all year
701Flow, in conduit or thru treatment plantMO AVG report only all year
701Flow, in conduit or thru treatment plantMO MAX report only all year
701Mercury, total recoverableQB report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states