Rochester city of

NPDES permit MN0024619 · Major POTW · effective, expires 2027-03-31 · 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

1values over a limit
0required values missing, on 0 form(s)
0of 48 forms filed late

Last period with anything received: 2026-08-31. Most often over: Chlorine, total residual (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 (69)

OutfallParameterStatisticLimitMonths
D366Specific conductanceMO MAX report only Mar, Sep
D366Oxygen, dissolved [DO]MO MIN >= 5 mg/L all year
D366pHMO MIN >= 6 SU all year
D366pHMO MAX <= 9 SU all year
D366Bicarbonate ion- [as HCO3]MO MAX report only Mar, Sep
D366Solids, total suspendedMO AVG <= 30 mg/L all year
D366Solids, total suspendedMO MAX report only Jan, Mar, May, Jul, Sep, Nov
D366Solids, total suspendedMX WK AV <= 45 mg/L all year
D366Solids, total suspendedMO AVG <= 2705 kg/d all year
D366Solids, total suspendedMX WK AV <= 4057 kg/d all year
D366Nitrogen, total [as N]MO AVG report only all year
D366Nitrogen, ammonia total [as N]MO AVG <= 3 mg/L Jun, Jul, Aug, Sep
D366Nitrogen, ammonia total [as N]MO AVG <= 10 mg/L Apr, May
D366Nitrogen, ammonia total [as N]MO AVG <= 5 mg/L Jan, Feb, Mar, Dec
D366Nitrogen, ammonia total [as N]MO AVG <= 13 mg/L Oct, Nov
D366Nitrogen, ammonia total [as N]MO AVG <= 270 kg/d Jun, Jul, Aug, Sep
D366Nitrogen, ammonia total [as N]MO AVG <= 902 kg/d Apr, May
D366Nitrogen, ammonia total [as N]MO AVG <= 451 kg/d Jan, Feb, Mar, Dec
D366Nitrogen, ammonia total [as N]MO AVG <= 1172 kg/d Oct, Nov
D366Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D366Nitrite + Nitrate total [as N]MO AVG report only all year
D366Phosphorus, total [as P]MO AVG <= 1 mg/L all year
D366Phosphorus, total [as P]MO AVG <= 129 kg/d Jun, Jul, Aug, Sep
D366Phosphorus, total [as P]MO AVG report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
D366Phosphorus, total [as P]YA <= 25206 kg/yr all year
D366Calcium, total [as Ca]MO MAX report only Mar, Sep
D366Magnesium, total [as Mg]MO MAX report only Mar, Sep
D366Sodium, total [as Na]MO MAX report only Mar, Sep
D366Potassium, total [as K]MO MAX report only Mar, Sep
D366Chloride [as Cl]QB report only Mar, Jun, Sep, Dec
D366Sulfate, total [as SO4]MO MAX report only Mar, Sep
D366Cadmium, total [as Cd]QB report only Mar, Jun, Sep, Dec
D366Chromium, total [as Cr]QB report only Mar, Jun, Sep, Dec
D366Copper, total [as Cu]DAILY MX <= 46 ug/L Mar, Jun, Sep, Dec
D366Lead, total [as Pb]QB report only Mar, Jun, Sep, Dec
D366Nickel, total [as Ni]QB report only Mar, Jun, Sep, Dec
D366Zinc, total [as Zn]QB report only Mar, Jun, Sep, Dec
D366Selenium, total [as Se]MO MAX report only Mar, Sep
D366TetrachloroethyleneMO MAX report only Mar, Sep
D366Hardness, Ca Mg Calculated [mg/L as CaCO3]MO MAX report only Mar, Sep
D366Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D366Flow, in conduit or thru treatment plantMO AVG report only all year
D366Flow, in conduit or thru treatment plantMO MAX report only all year
D366Flow, in conduit or thru treatment plantMO TOTAL report only all year
D366Chlorine, total residualDAILY MX <= .038 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
D366Solids, total dissolvedMO MAX report only Mar, Sep
D366Mercury, total [as Hg]MO AVG <= 10 ng/L Jan, Mar, May, Jul, Sep, Nov
D366Mercury, total [as Hg]DAILY MX <= 17 ng/L Jan, Mar, May, Jul, Sep, Nov
D366BOD, carbonaceous [5 day, 20 C]MO AVG <= 15 mg/L all year
D366BOD, carbonaceous [5 day, 20 C]MX WK AV <= 25 mg/L all year
D366BOD, carbonaceous [5 day, 20 C]MO AVG <= 1352 kg/d all year
D366BOD, carbonaceous [5 day, 20 C]MX WK AV <= 2254 kg/d all year
D366BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D366Solids, suspended percent removalMO AV MN >= 85 % all year
S370Precipitation, total defined period/inMO TOTAL report only all year
S370pHMO MIN report only all year
S370pHMO MAX report only all year
S370Solids, total suspendedMO AVG report only all year
S370Solids, total suspendedMO MAX report only all year
S370Nitrogen, total [as N]MO AVG report only all year
S370Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
S370Nitrite + Nitrate total [as N]MO AVG report only all year
S370Phosphorus, total [as P]MO AVG report only all year
S370Flow, in conduit or thru treatment plantMO AVG report only all year
S370Flow, in conduit or thru treatment plantMO MAX report only all year
S370Flow, in conduit or thru treatment plantMO TOTAL report only all year
S370Mercury, total [as Hg]MO AVG report only Jan, Mar, May, Jul, Sep, Nov
S370BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S370BOD, 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