Sherburn city of

NPDES permit MN0024872 · Minor POTW · administratively continued, expires 2026-05-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2026-05-31 and is administratively continued: 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

3values over a limit
3required values missing, on 3 form(s)
0of 34 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, carb-5 day, 20 deg C, percent removal (3).

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 (45)

OutfallParameterStatisticLimitMonths
D030Specific conductanceMO MAX report only Mar, Sep
D030Oxygen, dissolved [DO]MO MIN report only all year
D030pHMO MIN >= 6 SU all year
D030pHMO MAX <= 9 SU all year
D030Bicarbonate ion- [as HCO3]MO MAX report only Mar, Sep
D030Solids, total suspendedMO AVG <= 30 mg/L all year
D030Solids, total suspendedMX WK AV <= 45 mg/L all year
D030Solids, total suspendedMO MAX report only Jul
D030Solids, total suspendedMO AVG <= 38 kg/d all year
D030Solids, total suspendedMX WK AV <= 60 kg/d all year
D030Nitrogen, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D030Nitrogen, ammonia total [as N]MO AVG report only Mar, Sep
D030Nitrogen, Kjeldahl, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D030Nitrite + Nitrate total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D030Phosphorus, total [as P]MO AVG report only all year
D030Phosphorus, total [as P]MO AVG report only all year
D030Phosphorus, total [as P]ANNL TOT <= 459 kg/yr all year
D030Chloride [as Cl]MO MAX report only Mar, Sep
D030Sulfate, total [as SO4]MO MAX report only Mar, Sep
D030Hardness, Ca Mg Calculated [mg/L as CaCO3]MO MAX report only Mar, Sep
D030Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL May, Jun, Jul, Aug, Sep, Oct
D030Flow, in conduit or thru treatment plantMO AVG report only all year
D030Flow, in conduit or thru treatment plantMO MAX report only all year
D030Flow, in conduit or thru treatment plantMO TOTAL report only all year
D030Chlorine, total residualDAILY MX <= .038 mg/L all year
D030Solids, total dissolvedMO MAX report only Mar, Sep
D030Mercury, dissolved [as Hg]MO MAX report only Jul
D030Mercury, total [as Hg]MO MAX report only Jul
D030BOD, carbonaceous [5 day, 20 C]MO AVG <= 15 mg/L all year
D030BOD, carbonaceous [5 day, 20 C]MX WK AV <= 25 mg/L all year
D030BOD, carbonaceous [5 day, 20 C]MO AVG <= 19 kg/d all year
D030BOD, carbonaceous [5 day, 20 C]MX WK AV <= 30 kg/d all year
D030BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D030Solids, suspended percent removalMO AV MN >= 85 % all year
S031Precipitation, total defined period/inMO TOTAL report only all year
S031pHMO MIN report only all year
S031pHMO MAX report only all year
S031Solids, total suspendedMO AVG report only all year
S031Solids, total suspendedMO MAX report only all year
S031Nitrogen, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S031Nitrogen, Kjeldahl, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S031Nitrite + Nitrate total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S031Phosphorus, total [as P]MO AVG report only all year
S031BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S031BOD, 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