Saint Michael city of

NPDES permit MN0020222 · Major POTW · effective, expires 2030-11-30 · 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
24required values missing, on 3 form(s)
3of 45 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 43 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (53)

OutfallParameterStatisticLimitMonths
D018Oxygen, dissolved [DO]MO MIN >= 5 mg/L Jan, Feb, Mar, Jun, Jul, Aug, Sep, Dec
D018Oxygen, dissolved [DO]MO MIN report only Apr, May, Oct, Nov
D018pHMO MIN >= 6 SU all year
D018pHMO MAX <= 9 SU all year
D018Solids, total suspendedMO AVG <= 30 mg/L all year
D018Solids, total suspendedMO MAX report only May, Sep
D018Solids, total suspendedMX WK AV <= 45 mg/L all year
D018Solids, total suspendedMO AVG <= 277.3 kg/d all year
D018Solids, total suspendedMX WK AV <= 415.9 kg/d all year
D018Nitrogen, total [as N]MO AVG report only all year
D018Nitrogen, ammonia total [as N]MO AVG <= 3 mg/L Jun, Jul, Aug, Sep
D018Nitrogen, ammonia total [as N]MO AVG report only Apr, May, Oct, Nov
D018Nitrogen, ammonia total [as N]MO AVG <= 5 mg/L Jan, Feb, Mar, Dec
D018Nitrogen, ammonia total [as N]MO AVG <= 27.7 kg/d Jun, Jul, Aug, Sep
D018Nitrogen, ammonia total [as N]MO AVG report only Apr, May, Oct, Nov
D018Nitrogen, ammonia total [as N]MO AVG <= 46.2 kg/d Jan, Feb, Mar, Dec
D018Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D018Nitrite + Nitrate total [as N]MO AVG report only all year
D018Phosphorus, total [as P]1D <= 1 mg/L all year
D018Phosphorus, total [as P]MO AVG report only all year
D018Phosphorus, total [as P]MO AVG <= 5.18 kg/d Jun, Jul, Aug, Sep
D018Phosphorus, total [as P]ANNL TOT <= 2702 kg/yr all year
D018Sulfate, total [as SO4]QB report only Mar, Jun, Sep, Dec
D018Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D018Flow, in conduit or thru treatment plantMO AVG report only all year
D018Flow, in conduit or thru treatment plantMO MAX report only all year
D018Flow, in conduit or thru treatment plantMO TOTAL report only all year
D018Solids, total dissolvedMO AVG report only Mar, Sep
D018Mercury, dissolved [as Hg]MO MAX report only May, Sep
D018Mercury, total [as Hg]MO MAX report only May, Sep
D018BOD, carbonaceous [5 day, 20 C]MO AVG <= 15 mg/L Jan, Feb, Mar, Jun, Jul, Aug, Sep, Dec
D018BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L Apr, May, Oct, Nov
D018BOD, carbonaceous [5 day, 20 C]MX WK AV <= 25 mg/L Jan, Feb, Mar, Jun, Jul, Aug, Sep, Dec
D018BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L Apr, May, Oct, Nov
D018BOD, carbonaceous [5 day, 20 C]MO AVG <= 138.6 kg/d Jan, Feb, Mar, Jun, Jul, Aug, Sep, Dec
D018BOD, carbonaceous [5 day, 20 C]MO AVG <= 231 kg/d Apr, May, Oct, Nov
D018BOD, carbonaceous [5 day, 20 C]MX WK AV <= 231 kg/d Jan, Feb, Mar, Jun, Jul, Aug, Sep, Dec
D018BOD, carbonaceous [5 day, 20 C]MX WK AV <= 369.6 kg/d Apr, May, Oct, Nov
D018BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D018Solids, suspended percent removalMO AV MN >= 85 % all year
D021Solids, total suspendedANNL AVG report only all year
D021BOD, carbonaceous [5 day, 20 C]ANNL AVG report only all year
S020Precipitation, total defined period/inMO TOTAL report only all year
S020pHMO MIN report only all year
S020pHMO MAX report only all year
S020Solids, total suspendedMO AVG report only all year
S020Solids, total suspendedMO MAX report only all year
S020Nitrogen, total [as N]MO AVG report only all year
S020Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
S020Nitrite + Nitrate total [as N]MO AVG report only all year
S020Phosphorus, total [as P]MO AVG report only all year
S020BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S020BOD, 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