Fosston city of

NPDES permit MN0022128 · Minor POTW · effective, expires 2027-10-31 · 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

1values over a limit
0required values missing, on 0 form(s)
0of 60 forms filed late

Last period with anything received: 2026-08-31. Most often over: Coliform, fecal MPN + membrane ftl 44.5 C (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 (80)

OutfallParameterStatisticLimitMonths
D001Oxygen, dissolved [DO]MO MIN >= 5 mg/L all year
D001pHMO MIN >= 6 SU all year
D001pHMO MAX <= 9 SU all year
D001Solids, total suspendedMO AVG <= 45 mg/L all year
D001Solids, total suspendedMX WK AV <= 65 mg/L all year
D001Solids, total suspendedMO AVG <= 609 kg/d all year
D001Solids, total suspendedMX WK AV <= 881 kg/d all year
D001Phosphorus, total [as P]MO AVG <= 1 mg/L all year
D001Phosphorus, total [as P]MO AVG report only all year
D001Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D001Flow, in conduit or thru treatment plantMO AVG report only Jan, Feb, Jul, Aug
D001Flow, in conduit or thru treatment plantMO AVG report only Mar, Apr, May, Jun, Sep, Oct, Nov, Dec
D001Flow, in conduit or thru treatment plantMO MAX report only Jan, Feb, Jul, Aug
D001Flow, in conduit or thru treatment plantMO MAX report only Mar, Apr, May, Jun, Sep, Oct, Nov, Dec
D001Flow, in conduit or thru treatment plantMO TOTAL report only Jan, Feb, Jul, Aug
D001Flow, in conduit or thru treatment plantMO TOTAL report only Mar, Apr, May, Jun, Sep, Oct, Nov, Dec
D001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
D001BOD, carbonaceous [5 day, 20 C]MO AVG <= 338 kg/d all year
D001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 542 kg/d all year
D005Specific conductanceMO MAX report only all year
D005Oxygen, dissolved [DO]MO MIN >= 5 mg/L all year
D005pHMO MIN >= 6 SU all year
D005pHMO MAX <= 9 SU all year
D005Bicarbonate ion- [as HCO3]MO MAX report only all year
D005Solids, total suspendedMO AVG <= 45 mg/L all year
D005Solids, total suspendedANNL MAX report only all year
D005Solids, total suspendedMX WK AV <= 65 mg/L all year
D005Solids, total suspendedMO AVG <= 546 kg/d all year
D005Solids, total suspendedMX WK AV <= 789 kg/d all year
D005Nitrogen, total [as N]MO AVG report only all year
D005Nitrogen, ammonia total [as N]MO AVG report only all year
D005Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D005Nitrite + Nitrate total [as N]MO AVG report only all year
D005Phosphorus, total [as P]MO AVG <= 1 mg/L all year
D005Phosphorus, total [as P]MO AVG report only all year
D005Phosphorus, total [as P]YA <= 682 kg/yr all year
D005Calcium, total [as Ca]MO MAX report only all year
D005Magnesium, total [as Mg]MO MAX report only all year
D005Sodium, total [as Na]MO MAX report only all year
D005Potassium, total [as K]MO MAX report only all year
D005Chloride [as Cl]MO MAX report only all year
D005Sulfate, total [as SO4]MO MAX report only all year
D005Arsenic, total [as As]QB report only Mar, Jun, Sep, Dec
D005Hardness, Ca Mg Calculated [mg/L as CaCO3]MO MAX report only all year
D005Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D005Flow, in conduit or thru treatment plantMO AVG report only Mar, Apr, May, Jun, Sep, Oct, Nov, Dec
D005Flow, in conduit or thru treatment plantMO AVG report only Jan, Feb, Jul, Aug
D005Flow, in conduit or thru treatment plantMO MAX report only Mar, Apr, May, Jun, Sep, Oct, Nov, Dec
D005Flow, in conduit or thru treatment plantMO MAX report only Jan, Feb, Jul, Aug
D005Flow, in conduit or thru treatment plantMO TOTAL report only Mar, Apr, May, Jun, Sep, Oct, Nov, Dec
D005Flow, in conduit or thru treatment plantMO TOTAL report only Jan, Feb, Jul, Aug
D005Solids, total dissolvedMO MAX report only all year
D005Mercury, dissolved [as Hg]ANNL MAX report only all year
D005Mercury, total [as Hg]ANNL MAX report only all year
D005BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D005BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
D005BOD, carbonaceous [5 day, 20 C]MO AVG <= 303 kg/d all year
D005BOD, carbonaceous [5 day, 20 C]MX WK AV <= 486 kg/d all year
S002Precipitation, total defined period/inMO TOTAL report only all year
S002pHQB report only Mar, Jun, Sep, Dec
S002Solids, total suspendedQRTR AVG report only Mar, Jun, Sep, Dec
S002Nitrogen, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S002Nitrogen, Kjeldahl, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S002Nitrite + Nitrate total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S002Phosphorus, total [as P]QRTR AVG report only Mar, Jun, Sep, Dec
S002Flow, in conduit or thru treatment plantMO AVG report only all year
S002Flow, in conduit or thru treatment plantMO MAX report only all year
S002Flow, in conduit or thru treatment plantMO TOTAL report only all year
S002BOD, carbonaceous [5 day, 20 C]QRTR AVG report only Mar, Jun, Sep, Dec
S004pHMO MIN report only all year
S004pHMO MAX report only all year
S004Solids, total suspendedMO AVG report only all year
S004Solids, total suspendedMO MAX report only all year
S004Phosphorus, total [as P]MO AVG report only all year
S004Flow, in conduit or thru treatment plantMO AVG <= .15 MGD all year
S004Flow, in conduit or thru treatment plantMO MAX report only all year
S004Flow, in conduit or thru treatment plantMO TOTAL report only all year
S004BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S004BOD, 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