Aitkin city of

NPDES permit MN0020095 · Minor POTW · effective, expires 2028-02-29 · EPA's file as of 2026-09-19

Check this month's numbers before you file

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 35 forms filed late

Last period with anything received: 2026-07-31.

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 (47)

OutfallParameterStatisticLimitMonths
D015Oxygen, dissolved [DO]MO MIN report only all year
D015pHMO MIN >= 6 SU all year
D015pHMO MAX <= 9 SU all year
D015Solids, total suspendedMO AVG report only May, Sep
D015Solids, total suspendedMO AVG <= 30 mg/L all year
D015Solids, total suspendedDAILY MX report only May, Sep
D015Solids, total suspendedMX WK AV <= 45 mg/L all year
D015Solids, total suspendedMO AVG <= 78 kg/d all year
D015Solids, total suspendedMX WK AV <= 117 kg/d all year
D015Nitrogen, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D015Nitrogen, ammonia total [as N]MO AVG report only Mar, Sep
D015Nitrogen, Kjeldahl, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D015Nitrite + Nitrate total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D015Phosphorus, total [as P]MO AVG report only all year
D015Phosphorus, total [as P]MO AVG report only all year
D015Phosphorus, total [as P]ANNL TOT <= 953 kg/yr all year
D015Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D015Flow, in conduit or thru treatment plantMO AVG report only all year
D015Flow, in conduit or thru treatment plantMO MAX report only all year
D015Flow, in conduit or thru treatment plantMO TOTAL report only all year
D015Chlorine, total residualDAILY MX <= .038 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
D015Solids, total dissolvedMO AVG report only Mar, Sep
D015Mercury, dissolved [as Hg]MO AVG report only May, Sep
D015Mercury, dissolved [as Hg]DAILY MX report only May, Sep
D015Mercury, total [as Hg]MO AVG <= 9.7 ng/L May, Sep
D015Mercury, total [as Hg]DAILY MX <= 17 ng/L May, Sep
D015BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D015BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
D015BOD, carbonaceous [5 day, 20 C]MO AVG <= 65 kg/d all year
D015BOD, carbonaceous [5 day, 20 C]MX WK AV <= 104 kg/d all year
D015BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D015Solids, suspended percent removalMO AV MN >= 85 % all year
S016Precipitation, total defined period/inMO TOTAL report only all year
S016pHMO MIN report only all year
S016pHMO MAX report only all year
S016Solids, total suspendedMO AVG report only all year
S016Solids, total suspendedMO MAX report only all year
S016Nitrogen, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S016Nitrogen, Kjeldahl, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S016Nitrite + Nitrate total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S016Phosphorus, total [as P]MO AVG report only all year
S016Flow, in conduit or thru treatment plantMO AVG report only all year
S016Flow, in conduit or thru treatment plantMO MAX report only all year
S016Flow, in conduit or thru treatment plantMO TOTAL report only all year
S016Mercury, total [as Hg]MO AVG report only May, Sep
S016BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S016BOD, 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