Duluth city of

NPDES permit MN0055719 · Minor NON-POTW · effective, expires 2031-02-28 · EPA's file as of 2026-09-19

Check this month's numbers before you file
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

0values over a limit
0required values missing, on 0 form(s)
0of 45 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 21 days after each monitoring period ends (the most common figure among MN permits in EPA's filings — check your permit).

Limits in force (37)

OutfallParameterStatisticLimitMonths
D001Temperature, water deg. fahrenheitDAILY MX <= 75 deg F all year
D001Flow, in conduit or thru treatment plantMO AVG report only all year
D001Flow, in conduit or thru treatment plantMO MAX report only all year
D001Flow, in conduit or thru treatment plantMO TOTAL report only all year
D002Temperature, water deg. fahrenheitDAILY MX <= 75 deg F all year
D002Flow, in conduit or thru treatment plantMO AVG report only all year
D002Flow, in conduit or thru treatment plantMO MAX report only all year
D002Flow, in conduit or thru treatment plantMO TOTAL report only all year
D003Temperature, water deg. fahrenheitDAILY MX <= 86 deg F all year
D003Flow, in conduit or thru treatment plantMO AVG report only all year
D003Flow, in conduit or thru treatment plantMO MAX report only all year
D003Flow, in conduit or thru treatment plantMO TOTAL report only all year
D004Temperature, water deg. fahrenheitDAILY MX <= 75 deg F all year
D004Flow, in conduit or thru treatment plantMO AVG report only all year
D004Flow, in conduit or thru treatment plantMO MAX report only all year
D004Flow, in conduit or thru treatment plantMO TOTAL report only all year
D005Temperature, water deg. fahrenheitDAILY MX <= 80 deg F all year
D005Flow, in conduit or thru treatment plantMO AVG report only all year
D005Flow, in conduit or thru treatment plantMO MAX report only all year
D005Flow, in conduit or thru treatment plantMO TOTAL report only all year
D006Temperature, water deg. fahrenheitDAILY MX <= 80 deg F all year
D006Flow, in conduit or thru treatment plantMO AVG report only all year
D006Flow, in conduit or thru treatment plantMO MAX report only all year
D006Flow, in conduit or thru treatment plantMO TOTAL report only all year
D007Temperature, water deg. fahrenheitDAILY MX <= 80 deg F all year
D007Flow, in conduit or thru treatment plantMO AVG report only all year
D007Flow, in conduit or thru treatment plantMO MAX report only all year
D007Flow, in conduit or thru treatment plantMO TOTAL report only all year
D008Temperature, water deg. fahrenheitDAILY MX <= 80 deg F all year
D008Flow, in conduit or thru treatment plantMO AVG report only all year
D008Flow, in conduit or thru treatment plantMO MAX report only all year
D008Flow, in conduit or thru treatment plantMO TOTAL report only all year
D009Temperature, water deg. fahrenheitDAILY MX <= 80 deg F all year
D009Flow, in conduit or thru treatment plantMO AVG report only all year
D009Flow, in conduit or thru treatment plantMO MAX report only all year
D009Flow, in conduit or thru treatment plantMO TOTAL report only all year
D010Solids, total suspendedANNL AVG 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