North Koochiching Area Sanitary District

NPDES permit MN0020257 · Major POTW · expired, expires 2026-02-28 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2026-02-28 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 52 forms filed late

Last period with anything received: 2026-08-31.

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 (48)

OutfallParameterStatisticLimitMonths
D053Oxygen, dissolved [DO]MO MIN report only all year
D053pHMO MIN >= 6 SU all year
D053pHMO MAX <= 9 SU all year
D053Solids, total suspendedMO AVG report only Mar, Jun, Sep, Dec
D053Solids, total suspendedMO AVG <= 30 mg/L all year
D053Solids, total suspendedMX WK AV <= 45 mg/L all year
D053Solids, total suspendedMO AVG <= 261 kg/d all year
D053Solids, total suspendedMX WK AV <= 391 kg/d all year
D053Nitrogen, total [as N]MO AVG report only all year
D053Nitrogen, ammonia total [as N]MO AVG report only all year
D053Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D053Nitrite + Nitrate total [as N]MO AVG report only all year
D053Phosphorus, total [as P]MO AVG <= 1 mg/L all year
D053Phosphorus, total [as P]MO AVG report only all year
D053Phosphorus, total [as P]ANNL TOT <= 3318 kg/yr all year
D053Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D053Flow, in conduit or thru treatment plantMO AVG report only all year
D053Flow, in conduit or thru treatment plantMO MAX report only all year
D053Flow, in conduit or thru treatment plantMO TOTAL report only all year
D053Chlorine, total residualDAILY MX <= .038 mg/L all year
D053Solids, total dissolvedMO AVG report only Mar, Sep
D053Mercury, total [as Hg]MO AVG <= 9.1 ng/L Mar, Jun, Sep, Dec
D053Mercury, total [as Hg]DAILY MX <= 14.3 ng/L Mar, Jun, Sep, Dec
D053BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D053BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
D053BOD, carbonaceous [5 day, 20 C]MO AVG <= 284 kg/d all year
D053BOD, carbonaceous [5 day, 20 C]MX WK AV <= 453.6 kg/d all year
D053BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D053Solids, suspended percent removalMO AV MN >= 85 % all year
S054Precipitation, total defined period/inMO TOTAL report only all year
S054pHMO MIN report only all year
S054pHMO MAX report only all year
S054Solids, total suspendedMO AVG report only all year
S054Solids, total suspendedMO MAX report only all year
S054Nitrogen, total [as N]MO AVG report only all year
S054Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
S054Nitrite + Nitrate total [as N]MO AVG report only all year
S054Phosphorus, total [as P]MO AVG report only all year
S054Flow, in conduit or thru treatment plantMO AVG report only all year
S054Flow, in conduit or thru treatment plantMO MAX report only all year
S054Flow, in conduit or thru treatment plantMO TOTAL report only all year
S054BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S054BOD, carbonaceous [5 day, 20 C]MO MAX report only all year
S055Solids, total suspendedMO AVG report only all year
S055Flow, in conduit or thru treatment plantMO AVG report only all year
S055Flow, in conduit or thru treatment plantMO MAX report only all year
S055Flow, in conduit or thru treatment plantMO TOTAL report only all year
S055BOD, carbonaceous [5 day, 20 C]MO AVG 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