Minnesota Power

NPDES permit MN0001015 · Minor NON-POTW · effective, expires 2027-01-31 · 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 66 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 (45)

OutfallParameterStatisticLimitMonths
D003Flow, in conduit or thru treatment plantMO AVG report only all year
D003Flow, in conduit or thru treatment plantMO MAX report only all year
D003Flow, in conduit or thru treatment plantMO TOTAL report only all year
D005Temperature, water deg. fahrenheitDAILY AV report only all year
D005Specific conductanceMO MAX report only all year
D005Plant capacity fact. percent of capacityMO MAX report only all year
D005pHMO MIN >= 6 SU all year
D005pHMO MAX <= 9 SU all year
D005Bicarbonate ion- [as HCO3]MO MAX report only all year
D005Nitrogen, total [as N]MO AVG report only Mar, Sep
D005Nitrogen, Kjeldahl, total [as N]MO AVG report only Mar, Sep
D005Nitrite + Nitrate total [as N]MO AVG report only Mar, Sep
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
D005Hardness, Ca Mg Calculated [mg/L as CaCO3]MO MAX report only all year
D005Flow, in conduit or thru treatment plantMO AVG report only all year
D005Flow, in conduit or thru treatment plantMO MAX report only all year
D005Flow, in conduit or thru treatment plantMO TOTAL report only all year
D005Solids, total dissolvedMO AVG report only Mar, Sep
D012Temperature, water deg. fahrenheitMO AVG report only all year
D012pHMO MIN >= 6 SU all year
D012pHMO MAX <= 9 SU all year
D012Nitrogen, total [as N]MO AVG report only all year
D012Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D012Nitrite + Nitrate total [as N]MO AVG report only all year
D012Flow, in conduit or thru treatment plantMO AVG report only all year
D012Flow, in conduit or thru treatment plantMO MAX report only all year
D012Flow, in conduit or thru treatment plantMO TOTAL report only all year
W001Temperature, water deg. fahrenheitMO AVG report only Mar, Dec
W001Temperature, water deg. fahrenheitMO AVG report only Jun, Sep
W001Temperature, water deg. fahrenheitMO AVG report only Jan, Feb
W001Temperature, water deg. fahrenheitMO AVG report only May, Oct
W001Temperature, water deg. fahrenheitMO AVG report only Apr, Nov
W001Temperature, water deg. fahrenheitMO AVG report only Jul, Aug
W017Temperature, water deg. fahrenheitMO MIN report only all year
W017Temperature, water deg. fahrenheitMO AVG report only all year
W017Temperature, water deg. fahrenheitMO MAX report only all year
W018Temperature, water deg. fahrenheitMO MIN report only all year
W018Temperature, water deg. fahrenheitMO AVG report only all year
W018Temperature, water deg. fahrenheitMO MAX report only all year
W018Temp. diff. between samp. & upstrm deg. FMX DA AV <= 5 deg F 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