MDNR

NPDES permit MN0004421 · Minor NON-POTW · effective, expires 2030-01-31 · 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 11 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 (25)

OutfallParameterStatisticLimitMonths
D004Temperature, water deg. centigradeMO AVG report only all year
D004Temperature, water deg. centigradeDAILY MX report only all year
D004pHINST MIN >= 6.5 SU all year
D004pHINST MAX <= 8.5 SU all year
D004Solids, total suspendedMO AVG <= 30 mg/L Apr, May, Jun, Jul, Aug, Sep
D004Solids, total suspendedMO AVG <= 30 mg/L Jan, Feb, Mar, Oct, Nov, Dec
D004Solids, total suspendedDAILY MX <= 60 mg/L Apr, May, Jun, Jul, Aug, Sep
D004Solids, total suspendedDAILY MX <= 60 mg/L Jan, Feb, Mar, Oct, Nov, Dec
D004Solids, total suspendedMO AVG <= 242.3 kg/d Apr, May, Jun, Jul, Aug, Sep
D004Solids, total suspendedMO AVG <= 306 kg/d Jan, Feb, Mar, Oct, Nov, Dec
D004Solids, total suspendedDAILY MX <= 726 kg/d Jan, Feb, Mar, Oct, Nov, Dec
D004Nitrogen, total [as N]MO AVG report only all year
D004Nitrogen, ammonia total [as N]MO AVG report only all year
D004Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D004Nitrite + Nitrate total [as N]MO AVG <= 10 mg/L all year
D004Nitrite + Nitrate total [as N]MO AVG <= 121.13 kg/d all year
D004Phosphorus, total [as P]MO AVG report only Mar, Jun, Sep, Dec
D004Sulfate, total [as SO4]QB report only Mar, Jun, Sep, Dec
D004Flow, in conduit or thru treatment plantMO AVG report only all year
D004Flow, in conduit or thru treatment plantDAILY MX report only all year
D004Flow, in conduit or thru treatment plantMO TOTAL report only all year
D004BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D004BOD, carbonaceous [5 day, 20 C]DAILY MX <= 50 mg/L all year
D004BOD, carbonaceous [5 day, 20 C]MO AVG <= 255 kg/d all year
D004BOD, carbonaceous [5 day, 20 C]DAILY MX <= 605 kg/d 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