Chisago Lakes Joint STC

NPDES permit MN0055808 · Major POTW · effective, expires 2030-03-31 · 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

2values over a limit
0required values missing, on 0 form(s)
0of 38 forms filed late

Last period with anything received: 2026-08-31. Most often over: pH (1), Chloride [as Cl] (1).

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 (54)

OutfallParameterStatisticLimitMonths
D002Specific conductanceMO MAX report only all year
D002Oxygen, dissolved [DO]MO MIN >= 6 mg/L all year
D002pHMO MIN >= 6 SU all year
D002pHMO MAX <= 9 SU all year
D002Bicarbonate ion- [as HCO3]MO MAX report only all year
D002Solids, total suspendedMO AVG <= 30 mg/L all year
D002Solids, total suspendedMO MAX report only May, Sep
D002Solids, total suspendedMX WK AV <= 45 mg/L all year
D002Solids, total suspendedMO AVG <= 279 kg/d all year
D002Solids, total suspendedMX WK AV <= 418.5 kg/d all year
D002Nitrogen, total [as N]MO AVG report only all year
D002Nitrogen, ammonia total [as N]MO AVG <= 2.7 mg/L Jun, Jul, Aug, Sep
D002Nitrogen, ammonia total [as N]MO AVG <= 25.8 mg/L Jan, Feb, Mar, Dec
D002Nitrogen, ammonia total [as N]MO AVG <= 10.7 mg/L Oct, Nov
D002Nitrogen, ammonia total [as N]MO AVG <= 10 mg/L Apr, May
D002Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D002Nitrite + Nitrate total [as N]MO AVG report only all year
D002Phosphorus, total [as P]1D <= 1 mg/L all year
D002Phosphorus, total [as P]MO AVG report only all year
D002Phosphorus, total [as P]MO AVG report only all year
D002Phosphorus, total [as P]ANNL TOT <= 2039 kg/yr all year
D002Calcium, total [as Ca]MO MAX report only all year
D002Magnesium, total [as Mg]MO MAX report only all year
D002Sodium, total [as Na]MO MAX report only all year
D002Potassium, total [as K]MO MAX report only all year
D002Chloride [as Cl]MO AVG <= 286 mg/L all year
D002Chloride [as Cl]DAILY MX report only all year
D002Copper, total [as Cu]MO MAX report only all year
D002Hardness, Ca Mg Calculated [mg/L as CaCO3]MO MAX report only all year
D002Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL May, Jun, Jul, Aug, Sep, Oct
D002Flow, in conduit or thru treatment plantMO AVG report only all year
D002Flow, in conduit or thru treatment plantMO MAX report only all year
D002Flow, in conduit or thru treatment plantMO TOTAL report only all year
D002Chlorine, total residualDAILY MX <= .038 mg/L May, Jun, Jul, Aug, Sep, Oct
D002Solids, total dissolvedMO AVG report only all year
D002Mercury, dissolved [as Hg]MO MAX report only May, Sep
D002Mercury, total [as Hg]MO MAX report only May, Sep
D002BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D002BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
D002BOD, carbonaceous [5 day, 20 C]MO AVG <= 119 kg/d all year
D002BOD, carbonaceous [5 day, 20 C]MX WK AV <= 191 kg/d all year
D002BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D002Solids, suspended percent removalMO AV MN >= 85 % all year
S006Precipitation, total defined period/inMO TOTAL report only all year
S006pHMO MIN report only all year
S006pHMO MAX report only all year
S006Solids, total suspendedMO AVG report only all year
S006Solids, total suspendedMO MAX report only all year
S006Nitrogen, total [as N]MO AVG report only all year
S006Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
S006Nitrite + Nitrate total [as N]MO AVG report only all year
S006Phosphorus, total [as P]MO AVG report only all year
S006BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S006BOD, 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