Delano city of

NPDES permit MN0051250 · Major POTW · expired, expires 2023-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2023-03-31 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
53required values missing, on 13 form(s)
0of 70 forms filed late

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

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 (77)

OutfallParameterStatisticLimitMonths
D025Specific conductanceMO MAX report only all year
D025Oxygen, dissolved [DO]MO MIN >= 6 mg/L all year
D025Oxygen, dissolved [DO]MO MIN report only all year
D025pHMO MIN >= 6 SU all year
D025pHMO MAX <= 9 SU all year
D025Bicarbonate ion- [as HCO3]MO MAX report only all year
D025Solids, total suspendedMO AVG <= 30 mg/L all year
D025Solids, total suspendedMX WK AV <= 45 mg/L all year
D025Solids, total suspendedMO MAX report only May, Sep
D025Solids, total suspendedMO AVG <= 249.4 kg/d all year
D025Solids, total suspendedMX WK AV <= 374 kg/d all year
D025Nitrogen, ammonia total [as N]MO AVG <= 5 mg/L Jan, Feb, Mar, Dec
D025Nitrogen, ammonia total [as N]MO AVG <= 22 mg/L Apr, May
D025Nitrogen, ammonia total [as N]MO AVG <= 5.2 mg/L Oct, Nov
D025Nitrogen, ammonia total [as N]MO AVG <= 1.1 mg/L Jun, Jul, Aug, Sep
D025Nitrogen, ammonia total [as N]MO AVG <= 25 mg/L Oct, Nov
D025Nitrogen, ammonia total [as N]MO AVG <= 7.8 mg/L Jun, Jul, Aug, Sep
D025Nitrogen, ammonia total [as N]MO AVG <= 41.6 kg/d Jan, Feb, Mar, Dec
D025Nitrogen, ammonia total [as N]MO AVG <= 182.9 kg/d Apr, May
D025Nitrogen, ammonia total [as N]MO AVG <= 43.2 kg/d Oct, Nov
D025Nitrogen, ammonia total [as N]MO AVG <= 9.2 kg/d Jun, Jul, Aug, Sep
D025Nitrogen, ammonia total [as N]MO AVG <= 208 kg/d Oct, Nov
D025Nitrogen, ammonia total [as N]MO AVG <= 64.8 kg/d Jun, Jul, Aug, Sep
D025Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D025Nitrite + Nitrate total [as N]MO AVG report only all year
D025Phosphorus, total [as P]1D <= 1 mg/L all year
D025Phosphorus, total [as P]MO AVG report only all year
D025Phosphorus, total [as P]MO AVG report only all year
D025Phosphorus, total [as P]ANNL TOT <= 2430.4 kg/yr all year
D025Calcium, total [as Ca]MO MAX report only all year
D025Magnesium, total [as Mg]MO MAX report only all year
D025Sodium, total [as Na]MO MAX report only all year
D025Potassium, total [as K]MO MAX report only all year
D025Chloride [as Cl]MO MAX report only all year
D025Sulfate, total [as SO4]MO MAX report only all year
D025Copper, total [as Cu]QRTR AVG report only Mar, Jun, Sep, Dec
D025Copper, total [as Cu]DAILY MX report only Mar, Jun, Sep, Dec
D025Hardness, Ca Mg Calculated [mg/L as CaCO3]MO MAX report only all year
D025Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D025Flow, in conduit or thru treatment plantMO AVG report only all year
D025Flow, in conduit or thru treatment plantMO MAX report only all year
D025Flow, in conduit or thru treatment plantMO TOTAL report only all year
D025Solids, total dissolvedMO MAX report only all year
D025Mercury, dissolved [as Hg]MO MAX report only May, Sep
D025Mercury, total [as Hg]MO MAX report only May, Sep
D025BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D025BOD, carbonaceous [5 day, 20 C]MO AVG <= 15 mg/L all year
D025BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
D025BOD, carbonaceous [5 day, 20 C]MX WK AV <= 25 mg/L all year
D025BOD, carbonaceous [5 day, 20 C]MO AVG <= 208.1 kg/d all year
D025BOD, carbonaceous [5 day, 20 C]MO AVG <= 124.7 kg/d all year
D025BOD, carbonaceous [5 day, 20 C]MX WK AV <= 332.9 kg/d all year
D025BOD, carbonaceous [5 day, 20 C]MX WK AV <= 208.1 kg/d all year
D025BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D025Solids, suspended percent removalMO AV MN >= 85 % all year
S028Precipitation, total defined period/inMO TOTAL report only all year
S028pHMO MIN report only all year
S028pHMO MAX report only all year
S028Solids, total suspendedMO AVG report only all year
S028Solids, total suspendedMO MAX report only all year
S028Nitrogen, total [as N]MO AVG report only all year
S028Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
S028Nitrite + Nitrate total [as N]MO AVG report only all year
S028Phosphorus, total [as P]MO AVG report only all year
S028Flow, in conduit or thru treatment plantMO AVG report only all year
S028Flow, in conduit or thru treatment plantMO MAX report only all year
S028Flow, in conduit or thru treatment plantMO TOTAL report only all year
S028BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S028BOD, carbonaceous [5 day, 20 C]MO MAX report only all year
W026Stream flow, instantaneousMO MIN report only all year
W026Stream flow, instantaneousMO AVG report only all year
W026Stream flow, instantaneousMO MAX report only all year
W027Temperature, water deg. centigradeMO MAX report only Jan, Feb, Mar, Dec
W027Oxygen, dissolved [DO]MO MIN report only Jan, Feb, Mar, Dec
W027pHMO MAX report only Jan, Feb, Mar, Dec
W027Nitrogen, ammonia total [as N]MO MAX report only Jan, Feb, Mar, Dec
W027Nitrogen, ammonia, tot unionized [as N]MO MAX report only Jan, Feb, Mar, Dec

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