Lonsdale city of

NPDES permit MN0031241 · Minor POTW · effective, expires 2029-07-31 · 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 37 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 (52)

OutfallParameterStatisticLimitMonths
D011Specific conductanceMO MAX report only Mar, Sep
D011Oxygen, dissolved [DO]MO MIN report only all year
D011pHMO MIN >= 6 SU all year
D011pHMO MAX <= 9 SU all year
D011Bicarbonate ion- [as HCO3]MO MAX report only Mar, Sep
D011Solids, total suspendedMO AVG <= 30 mg/L all year
D011Solids, total suspendedMO MAX report only Jul
D011Solids, total suspendedMX WK AV <= 45 mg/L all year
D011Solids, total suspendedMO AVG <= 78 kg/d all year
D011Solids, total suspendedMX WK AV <= 117 kg/d all year
D011Nitrogen, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D011Nitrogen, ammonia total [as N]MO AVG report only Mar, Sep
D011Nitrogen, Kjeldahl, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D011Nitrite + Nitrate total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D011Phosphorus, total [as P]1D <= 1 mg/L all year
D011Phosphorus, total [as P]MO AVG report only all year
D011Phosphorus, total [as P]MO AVG report only all year
D011Phosphorus, total [as P]ANNL TOT <= 285 kg/yr all year
D011Calcium, total [as Ca]MO MAX report only Mar, Sep
D011Magnesium, total [as Mg]MO MAX report only Mar, Sep
D011Sodium, total [as Na]MO MAX report only Mar, Sep
D011Potassium, total [as K]MO MAX report only Mar, Sep
D011Chloride [as Cl]MO AVG <= 550 mg/L all year
D011Sulfate, total [as SO4]MO MAX report only Mar, Sep
D011Hardness, Ca Mg Calculated [mg/L as CaCO3]MO MAX report only Mar, Sep
D011Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL May, Jun, Jul, Aug, Sep, Oct
D011Flow, in conduit or thru treatment plantMO AVG report only all year
D011Flow, in conduit or thru treatment plantMO MAX report only all year
D011Flow, in conduit or thru treatment plantMO TOTAL report only all year
D011Solids, total dissolvedMO MAX report only Mar, Sep
D011Mercury, dissolved [as Hg]MO MAX report only Jul
D011Mercury, total [as Hg]MO MAX report only Jul
D011BOD, carbonaceous [5 day, 20 C]MO AVG <= 15 mg/L all year
D011BOD, carbonaceous [5 day, 20 C]MX WK AV <= 25 mg/L all year
D011BOD, carbonaceous [5 day, 20 C]MO AVG <= 39 kg/d all year
D011BOD, carbonaceous [5 day, 20 C]MX WK AV <= 65 kg/d all year
D011BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D011Solids, suspended percent removalMO AV MN >= 85 % all year
S015Precipitation, total defined period/inMO TOTAL report only all year
S015pHMO MIN report only all year
S015pHMO MAX report only all year
S015Solids, total suspendedMO AVG report only all year
S015Solids, total suspendedMO MAX report only all year
S015Nitrogen, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S015Nitrogen, Kjeldahl, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S015Nitrite + Nitrate total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S015Phosphorus, total [as P]MO AVG report only all year
S015Flow, in conduit or thru treatment plantMO AVG report only all year
S015Flow, in conduit or thru treatment plantMO MAX report only all year
S015Flow, in conduit or thru treatment plantMO TOTAL report only all year
S015BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S015BOD, 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