Elk River city of

NPDES permit MN0020788 · Major POTW · expired, expires 2026-04-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2026-04-30 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
0required values missing, on 0 form(s)
0of 39 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 (48)

OutfallParameterStatisticLimitMonths
D014Oxygen, dissolved [DO]MO MIN report only all year
D014pHMO MIN >= 6 SU all year
D014pHMO MAX <= 9 SU all year
D014Solids, total suspendedMO AVG report only Jan, Mar, May, Jul, Sep, Nov
D014Solids, total suspendedMO AVG <= 30 mg/L all year
D014Solids, total suspendedDAILY MX report only Jan, Mar, May, Jul, Sep, Nov
D014Solids, total suspendedMX WK AV <= 45 mg/L all year
D014Solids, total suspendedMO AVG <= 118 kg/d all year
D014Solids, total suspendedMX WK AV <= 177 kg/d all year
D014Nitrogen, total [as N]MO AVG report only all year
D014Nitrogen, ammonia total [as N]MO AVG report only all year
D014Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D014Nitrite + Nitrate total [as N]MO AVG report only all year
D014Phosphorus, total [as P]1D <= 1 mg/L all year
D014Phosphorus, total [as P]MO AVG report only all year
D014Phosphorus, total [as P]MO AVG report only all year
D014Phosphorus, total [as P]ANNL TOT <= 2431 kg/yr all year
D014Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL all year
D014Flow, in conduit or thru treatment plantMO AVG report only all year
D014Flow, in conduit or thru treatment plantMO MAX report only all year
D014Flow, in conduit or thru treatment plantMO TOTAL report only all year
D014Chlorine, total residualDAILY MX <= .038 mg/L all year
D014Solids, total dissolvedMO AVG report only Mar, Sep
D014Mercury, dissolved [as Hg]MO AVG report only Jan, Mar, May, Jul, Sep, Nov
D014Mercury, dissolved [as Hg]DAILY MX report only Jan, Mar, May, Jul, Sep, Nov
D014Mercury, total [as Hg]MO AVG <= 6.9 ng/L Jan, Mar, May, Jul, Sep, Nov
D014Mercury, total [as Hg]DAILY MX <= 6.9 ng/L Jan, Mar, May, Jul, Sep, Nov
D014BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D014BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
D014BOD, carbonaceous [5 day, 20 C]MO AVG <= 98 kg/d all year
D014BOD, carbonaceous [5 day, 20 C]MX WK AV <= 157 kg/d all year
D014BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D014Solids, suspended percent removalMO AV MN >= 85 % all year
S015Precipitation, total defined period/inMO TOTAL report only all year
S015pHMO MIN report only all year
S015pHMO MAX report only all year
S015Solids, total suspendedMO AVG report only all year
S015Solids, total suspendedMO MAX report only all year
S015Nitrogen, total [as N]MO AVG report only all year
S015Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
S015Nitrite + Nitrate total [as N]MO AVG report only all year
S015Phosphorus, total [as P]MO AVG report only all year
S015Flow, in conduit or thru treatment plantMO AVG report only all year
S015Flow, in conduit or thru treatment plantMO MAX report only all year
S015Flow, in conduit or thru treatment plantMO TOTAL report only all year
S015Mercury, total [as Hg]MO AVG report only Jan, Mar, May, Jul, Sep, Nov
S015BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S015BOD, 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