Red Wing city of

NPDES permit MN0024571 · Major POTW · expired, expires 2025-02-28 · 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.

This permit expired on 2025-02-28 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
0required values missing, on 0 form(s)
0of 41 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 (53)

OutfallParameterStatisticLimitMonths
D038Oxygen, dissolved [DO]MO MIN report only all year
D038pHMO MIN >= 6 SU all year
D038pHMO MAX <= 9 SU all year
D038Solids, total suspendedMO AVG <= 30 mg/L all year
D038Solids, total suspendedMO AVG report only Jan, Mar, May, Jul, Sep, Nov
D038Solids, total suspendedMX WK AV <= 45 mg/L all year
D038Solids, total suspendedDAILY MX report only Jan, Mar, May, Jul, Sep, Nov
D038Solids, total suspendedMO AVG <= 454 kg/d all year
D038Solids, total suspendedMX WK AV <= 681 kg/d all year
D038Nitrogen, total [as N]MO AVG report only all year
D038Nitrogen, ammonia total [as N]MO AVG report only all year
D038Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D038Nitrite + Nitrate total [as N]MO AVG report only all year
D038Phosphorus, total [as P]MO AVG <= 1 mg/L all year
D038Phosphorus, total [as P]MO AVG report only all year
D038Phosphorus, total [as P]ANNL TOT <= 4421 kg/yr all year
D038Cyanide, free [amenable to chlorination]MO AVG report only Apr, Sep
D038Chromium, hexavalent [as Cr]MO MAX report only Jan, Jul
D038Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D038Flow, in conduit or thru treatment plantMO AVG report only all year
D038Flow, in conduit or thru treatment plantMO MAX report only all year
D038Flow, in conduit or thru treatment plantMO TOTAL report only all year
D038Chlorine, total residualDAILY MX <= .038 mg/L all year
D038Solids, total dissolvedMO AVG report only Mar, Sep
D038Mercury, dissolved [as Hg]MO AVG report only Jan, Mar, May, Jul, Sep, Nov
D038Mercury, dissolved [as Hg]DAILY MX report only Jan, Mar, May, Jul, Sep, Nov
D038Mercury, total [as Hg]MO AVG <= 8.9 ng/L Jan, Mar, May, Jul, Sep, Nov
D038Mercury, total [as Hg]DAILY MX <= 14.8 ng/L Jan, Mar, May, Jul, Sep, Nov
D038BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D038BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
D038BOD, carbonaceous [5 day, 20 C]MO AVG <= 378 kg/d all year
D038BOD, carbonaceous [5 day, 20 C]MX WK AV <= 606 kg/d all year
D038BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D038Solids, suspended percent removalMO AV MN >= 85 % all year
D048Solids, total suspendedANNL AVG report only all year
D048BOD, carbonaceous [5 day, 20 C]ANNL AVG report only all year
D051Solids, total suspendedANNL AVG report only all year
D051BOD, carbonaceous [5 day, 20 C]ANNL AVG report only all year
S047Precipitation, total defined period/inMO TOTAL report only all year
S047pHMO MIN report only all year
S047pHMO MAX report only all year
S047Solids, total suspendedMO AVG report only all year
S047Solids, total suspendedMO MAX report only all year
S047Nitrogen, total [as N]MO AVG report only all year
S047Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
S047Nitrite + Nitrate total [as N]MO AVG report only all year
S047Phosphorus, total [as P]MO AVG report only all year
S047Flow, in conduit or thru treatment plantMO AVG report only all year
S047Flow, in conduit or thru treatment plantMO MAX report only all year
S047Flow, in conduit or thru treatment plantMO TOTAL report only all year
S047Mercury, total [as Hg]MO AVG report only Jan, Mar, May, Jul, Sep, Nov
S047BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S047BOD, carbonaceous [5 day, 20 C]MO MAX 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