Montevideo WWTP

NPDES permit MN0020133 · Major POTW · administratively continued, expires 2019-04-30 · 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.

This permit expired on 2019-04-30 and is administratively continued: 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
22required values missing, on 6 form(s)
0of 20 forms filed late

Last period with anything received: 2026-06-30.

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 (56)

OutfallParameterStatisticLimitMonths
030Specific conductanceMO MAX report only all year
030Oxygen, dissolved [DO]MO MIN report only all year
030pHMO MIN >= 6 SU all year
030pHMO MAX <= 9 SU all year
030Bicarbonate ion- [as HCO3]MO MAX report only all year
030Solids, total suspendedMO AVG <= 30 mg/L all year
030Solids, total suspendedMX WK AV <= 45 mg/L all year
030Solids, total suspendedMO AVG <= 280 kg/d all year
030Solids, total suspendedMX WK AV <= 420 kg/d all year
030Solids, total suspendedQB report only Mar, Jun, Sep, Dec
030Nitrogen, ammonia total [as N]MO AVG <= 12.9 mg/L Jan, Feb, Mar, Dec
030Nitrogen, ammonia total [as N]MO AVG <= 31 mg/L Apr, May
030Nitrogen, ammonia total [as N]MO AVG <= 2.5 mg/L Jun, Jul, Aug, Sep
030Nitrogen, ammonia total [as N]MO AVG <= 8.6 mg/L Oct, Nov
030Nitrogen, ammonia total [as N]MO AVG <= 120.4 kg/d Jan, Feb, Mar, Dec
030Nitrogen, ammonia total [as N]MO AVG <= 289.4 kg/d Apr, May
030Nitrogen, ammonia total [as N]MO AVG <= 23.3 kg/d Jun, Jul, Aug, Sep
030Nitrogen, ammonia total [as N]MO AVG <= 80.3 kg/d Oct, Nov
030Nitrogen, Kjeldahl, total [as N]MO AVG report only Apr, Sep
030Nitrite + Nitrate total [as N]MO AVG report only Apr, Sep
030Phosphorus, total [as P]MO AVG report only all year
030Phosphorus, total [as P]MO TOTAL report only all year
030Phosphorus, total [as P]ANNL TOT <= 3316 kg/yr all year
030Calcium, total [as Ca]MO MAX report only all year
030Magnesium, total [as Mg]MO MAX report only all year
030Sodium, total [as Na]MO MAX report only all year
030Potassium, total [as K]MO MAX report only all year
030Chloride [as Cl]MO MAX report only all year
030Sulfate, total [as SO4]MO MAX report only all year
030Arsenic, total [as As]MO MAX report only Apr, Sep
030Copper, dissolved [as Cu]MO MAX report only Apr, Sep
030Copper, total [as Cu]MO MAX report only Apr, Sep
030Hardness, Ca Mg Calculated [mg/L as CaCO3]MO MAX report only all year
030Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
030Flow, in conduit or thru treatment plantMO AVG report only all year
030Flow, in conduit or thru treatment plantMO MAX report only all year
030Flow, in conduit or thru treatment plantMO TOTAL report only all year
030Chlorine, total residualDAILY MX <= .038 mg/L all year
030Solids, total dissolvedMO MAX report only all year
030Mercury, dissolved [as Hg]QB report only Mar, Jun, Sep, Dec
030Mercury, total [as Hg]QB report only Mar, Jun, Sep, Dec
030BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
030BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
030BOD, carbonaceous [5 day, 20 C]MO AVG <= 233 kg/d all year
030BOD, carbonaceous [5 day, 20 C]MX WK AV <= 373 kg/d all year
030BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
030Solids, suspended percent removalMO AV MN >= 85 % all year
901Precipitation, total defined period/inMO TOTAL report only all year
901pHMO MIN report only all year
901pHMO MAX report only all year
901Solids, total suspendedMO AVG report only all year
901Solids, total suspendedMO MAX report only all year
901Phosphorus, total [as P]MO AVG report only all year
901Mercury, total [as Hg]QB report only Mar, Jun, Sep, Dec
901BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
901BOD, 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