Nashwauk city of

NPDES permit MN0053392 · Minor POTW · expired, expires 2025-05-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2025-05-31 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

7values over a limit
0required values missing, on 0 form(s)
0of 37 forms filed late

Last period with anything received: 2026-08-31. Most often over: Solids, suspended percent removal (4), BOD, carb-5 day, 20 deg C, percent removal (2), Oxygen, dissolved [DO] (1).

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 (51)

OutfallParameterStatisticLimitMonths
D002Specific conductanceQB report only Mar, Jun, Sep, Dec
D002Oxygen, dissolved [DO]MO MIN >= 5 mg/L all year
D002pHMO MIN >= 6 SU all year
D002pHMO MAX <= 9 SU all year
D002Bicarbonate ion- [as HCO3]QB report only Mar, Jun, Sep, Dec
D002Solids, total suspendedMO AVG <= 45 mg/L all year
D002Solids, total suspendedMO MAX report only Jul
D002Solids, total suspendedMX WK AV <= 65 mg/L all year
D002Solids, total suspendedMO AVG <= 60.2 kg/d all year
D002Solids, total suspendedMX WK AV <= 86.7 kg/d all year
D002Nitrogen, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D002Nitrogen, ammonia total [as N]MO AVG report only Mar, Sep
D002Nitrogen, Kjeldahl, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D002Nitrite + Nitrate total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D002Phosphorus, total [as P]MO AVG <= 1 mg/L all year
D002Phosphorus, total [as P]MO AVG report only all year
D002Phosphorus, total [as P]ANNL TOT <= 488 kg/yr all year
D002Calcium, total [as Ca]QB report only Mar, Jun, Sep, Dec
D002Magnesium, total [as Mg]QB report only Mar, Jun, Sep, Dec
D002Sodium, total [as Na]QB report only Mar, Jun, Sep, Dec
D002Potassium, total [as K]QB report only Mar, Jun, Sep, Dec
D002Chloride [as Cl]QB report only Mar, Jun, Sep, Dec
D002Sulfate, total [as SO4]QB report only Mar, Jun, Sep, Dec
D002Hardness, Ca Mg Calculated [mg/L as CaCO3]QB report only Mar, Jun, Sep, Dec
D002Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
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
D002Solids, total dissolvedQB report only Mar, Jun, Sep, Dec
D002Mercury, dissolved [as Hg]MO MAX report only Jul
D002Mercury, total [as Hg]MO MAX report only Jul
D002BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D002BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
D002BOD, carbonaceous [5 day, 20 C]MO AVG <= 33.5 kg/d all year
D002BOD, carbonaceous [5 day, 20 C]MX WK AV <= 53.5 kg/d all year
D002BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D002Solids, suspended percent removalMO AV MN >= 85 % all year
S003Precipitation, total defined period/inMO TOTAL report only all year
S003pHMO MIN report only all year
S003pHMO MAX report only all year
S003Solids, total suspendedMO AVG report only all year
S003Solids, total suspendedMO MAX report only all year
S003Nitrogen, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S003Nitrogen, Kjeldahl, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S003Nitrite + Nitrate total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S003Phosphorus, total [as P]MO AVG report only all year
S003Flow, in conduit or thru treatment plantMO AVG report only all year
S003Flow, in conduit or thru treatment plantMO MAX report only all year
S003Flow, in conduit or thru treatment plantMO TOTAL report only all year
S003BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S003BOD, 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