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NPDES permit MN0050873 · Minor POTW · expired, expires 2023-05-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2023-05-31 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

11values over a limit
0required values missing, on 0 form(s)
0of 22 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, carbonaceous [5 day, 20 C] (4), Nitrogen, total [as N] (2), Oxygen, dissolved [DO] (2).

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 (48)

OutfallParameterStatisticLimitMonths
D013Specific conductanceMO MAX report only all year
D013Oxygen, dissolved [DO]MO MIN >= 7 mg/L all year
D013pHMO MIN >= 6.5 SU all year
D013pHMO MAX <= 8.5 SU all year
D013Bicarbonate ion- [as HCO3]MO MAX report only all year
D013Solids, total suspendedMO AVG <= 30 mg/L all year
D013Solids, total suspendedMX WK AV <= 45 mg/L all year
D013Solids, total suspendedMO AVG <= 7.04 kg/d all year
D013Solids, total suspendedMX WK AV <= 10.56 kg/d all year
D013Nitrogen, total [as N]MO AVG <= 10 mg/L all year
D013Nitrogen, total [as N]MO AVG <= 2.35 kg/d all year
D013Nitrogen, ammonia total [as N]MO AVG <= 1 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
D013Nitrogen, ammonia total [as N]MO AVG <= 2 mg/L Jan, Feb, Mar, Dec
D013Nitrogen, ammonia total [as N]MO AVG <= .23 kg/d Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
D013Nitrogen, ammonia total [as N]MO AVG <= .46 kg/d Jan, Feb, Mar, Dec
D013Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D013Nitrite + Nitrate total [as N]MO AVG report only all year
D013Phosphorus, total [as P]MO AVG report only all year
D013Phosphorus, total [as P]MO AVG report only all year
D013Calcium, total [as Ca]MO MAX report only all year
D013Magnesium, total [as Mg]MO MAX report only all year
D013Sodium, total [as Na]MO MAX report only all year
D013Potassium, total [as K]MO MAX report only all year
D013Chloride [as Cl]MO MAX report only all year
D013Sulfate, dissolved [as SO4]MO MAX report only all year
D013Hardness, Ca Mg Calculated [mg/L as CaCO3]MO MAX report only all year
D013Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL all year
D013Flow, in conduit or thru treatment plantMO AVG report only all year
D013Flow, in conduit or thru treatment plantMO MAX report only all year
D013Flow, in conduit or thru treatment plantMO TOTAL report only all year
D013Solids, total dissolvedMO MAX report only all year
D013BOD, carbonaceous [5 day, 20 C]MO AVG <= 5 mg/L all year
D013BOD, carbonaceous [5 day, 20 C]MX WK AV <= 7.5 mg/L all year
D013BOD, carbonaceous [5 day, 20 C]MO AVG <= 1.17 kg/d all year
D013BOD, carbonaceous [5 day, 20 C]MX WK AV <= 1.76 kg/d all year
D013BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D013Solids, suspended percent removalMO AV MN >= 85 % all year
S014Precipitation, total defined period/inMO TOTAL report only all year
S014pHMO MIN report only all year
S014pHMO MAX report only all year
S014Solids, total suspendedMO AVG report only all year
S014Solids, total suspendedMO MAX report only all year
S014Nitrogen, total [as N]MO AVG report only Mar, Sep
S014Nitrogen, Kjeldahl, total [as N]MO AVG report only Mar, Sep
S014Nitrite + Nitrate total [as N]MO AVG report only Mar, Sep
S014Phosphorus, total [as P]MO AVG report only all year
S014BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S014BOD, 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