Winnebago city of

NPDES permit MN0025267 · Major POTW · effective, expires 2028-09-30 · 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 36 forms filed late

Last period with anything received: 2026-08-31.

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 (54)

OutfallParameterStatisticLimitMonths
D018Specific conductanceMO MAX report only Mar, Sep
D018Oxygen, dissolved [DO]MO MIN report only all year
D018pHMO MIN >= 6 SU all year
D018pHMO MAX <= 9 SU all year
D018Bicarbonate ion- [as HCO3]MO MAX report only Mar, Sep
D018Solids, total suspendedMO AVG <= 30 mg/L all year
D018Solids, total suspendedMO MAX report only May, Sep
D018Solids, total suspendedMX WK AV <= 45 mg/L all year
D018Solids, total suspendedMO AVG <= 193 kg/d all year
D018Solids, total suspendedMX WK AV <= 289.2 kg/d all year
D018Nitrogen, total [as N]MO AVG report only all year
D018Nitrogen, ammonia total [as N]MO AVG report only all year
D018Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D018Nitrite + Nitrate total [as N]MO AVG report only all year
D018Phosphorus, total [as P]MO AVG report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
D018Phosphorus, total [as P]MO AVG report only Jun, Jul, Aug, Sep
D018Phosphorus, total [as P]MO AVG report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
D018Phosphorus, total [as P]MO AVG <= 5 kg/d Jun, Jul, Aug, Sep
D018Phosphorus, total [as P]ANNL TOT <= 1879 kg/yr all year
D018Calcium, total [as Ca]MO MAX report only Mar, Sep
D018Magnesium, total [as Mg]MO MAX report only Mar, Sep
D018Sodium, total [as Na]MO MAX report only Mar, Sep
D018Potassium, total [as K]MO MAX report only Mar, Sep
D018Chloride [as Cl]DAILY MX <= 1720 mg/L all year
D018Sulfate, total [as SO4]MO MAX report only Mar, Sep
D018Hardness, Ca Mg Calculated [mg/L as CaCO3]MO MAX report only Mar, Sep
D018Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D018Flow, in conduit or thru treatment plantMO AVG report only all year
D018Flow, in conduit or thru treatment plantMO MAX report only all year
D018Flow, in conduit or thru treatment plantMO TOTAL report only all year
D018Chlorine, total residualDAILY MX <= .038 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
D018Solids, total dissolvedMO AVG report only Mar, Sep
D018Mercury, dissolved [as Hg]MO MAX report only May, Sep
D018Mercury, total [as Hg]MO MAX report only May, Sep
D018BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D018BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
D018BOD, carbonaceous [5 day, 20 C]MO AVG <= 160.7 kg/d all year
D018BOD, carbonaceous [5 day, 20 C]MX WK AV <= 257 kg/d all year
D018BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D018Solids, suspended percent removalMO AV MN >= 85 % all year
S019Precipitation, total defined period/inMO TOTAL report only all year
S019pHMO MIN report only all year
S019pHMO MAX report only all year
S019Solids, total suspendedMO AVG report only all year
S019Solids, total suspendedMO MAX report only all year
S019Nitrogen, total [as N]MO AVG report only all year
S019Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
S019Nitrite + Nitrate total [as N]MO AVG report only all year
S019Phosphorus, total [as P]MO AVG report only all year
S019Flow, in conduit or thru treatment plantMO AVG report only all year
S019Flow, in conduit or thru treatment plantMO MAX report only all year
S019Flow, in conduit or thru treatment plantMO TOTAL report only all year
S019BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S019BOD, 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