Dennison city of

NPDES permit MN0022195 · Minor POTW · expired, expires 2024-06-30 · 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.

This permit expired on 2024-06-30 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

0values over a limit
0required values missing, on 0 form(s)
0of 33 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
D001Specific conductanceMO MAX report only all year
D001Oxygen, dissolved [DO]MO MIN report only all year
D001pHMO MIN >= 6 SU all year
D001pHMO MAX <= 9 SU all year
D001Bicarbonate ion- [as HCO3]MO MAX report only 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 <= 44 kg/d all year
D001Solids, total suspendedMX WK AV <= 64 kg/d all year
D001Nitrogen, total [as N]MO AVG report only all year
D001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D001Nitrite + Nitrate total [as N]MO AVG report only all year
D001Phosphorus, total [as P]MO AVG report only all year
D001Phosphorus, total [as P]MO AVG report only all year
D001Phosphorus, total [as P]YA <= 69 kg/yr all year
D001Calcium, total [as Ca]MO MAX report only all year
D001Magnesium, total [as Mg]MO MAX report only all year
D001Sodium, total [as Na]MO MAX report only all year
D001Potassium, total [as K]MO MAX report only all year
D001Chloride [as Cl]MO MAX report only all year
D001Sulfate, total [as SO4]MO MAX report only all year
D001Hardness, Ca Mg Calculated [mg/L as CaCO3]MO MAX 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
D001Solids, total dissolvedMO MAX report only all year
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 <= 24 kg/d all year
D001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 39 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]MO AVG report only Mar, Sep
S002Nitrogen, Kjeldahl, total [as N]MO AVG report only Mar, Sep
S002Nitrite + Nitrate total [as N]MO AVG report only Mar, Sep
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

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