Ely city of

NPDES permit MN0020508 · Major POTW · effective, expires 2031-05-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

EPA's record, 2025-09-01 to 2026-08-31

2values over a limit
2required values missing, on 2 form(s)
0of 33 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, carb-5 day, 20 deg C, percent removal (1), Solids, suspended percent removal (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 (47)

OutfallParameterStatisticLimitMonths
D050Oxygen, dissolved [DO]MO MIN report only all year
D050pHMO MIN >= 6 SU all year
D050pHMO MAX <= 9 SU all year
D050Solids, total suspendedMO AVG report only Jan, Mar, May, Jul, Sep, Nov
D050Solids, total suspendedMO AVG <= 30 mg/L all year
D050Solids, total suspendedDAILY MX report only Jan, Mar, May, Jul, Sep, Nov
D050Solids, total suspendedMX WK AV <= 45 mg/L all year
D050Solids, total suspendedMO AVG <= 170.3 kg/d all year
D050Solids, total suspendedMX WK AV <= 255.5 kg/d all year
D050Nitrogen, total [as N]MO AVG report only all year
D050Nitrogen, ammonia total [as N]MO AVG report only all year
D050Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D050Nitrite + Nitrate total [as N]MO AVG report only all year
D050Phosphorus, total [as P]MO AVG <= .3 mg/L all year
D050Phosphorus, total [as P]MO AVG <= 1.7 kg/d all year
D050Sulfate, total [as SO4]QB report only Mar, Jun, Sep, Dec
D050Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D050Flow, in conduit or thru treatment plantMO AVG report only all year
D050Flow, in conduit or thru treatment plantMO MAX report only all year
D050Flow, in conduit or thru treatment plantMO TOTAL report only all year
D050Chlorine, total residualDAILY MX <= .038 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
D050Solids, total dissolvedMO AVG report only Mar, Sep
D050Mercury, dissolved [as Hg]MO AVG report only Jan, Mar, May, Jul, Sep, Nov
D050Mercury, dissolved [as Hg]DAILY MX report only Jan, Mar, May, Jul, Sep, Nov
D050Mercury, total [as Hg]MO AVG <= 11 ng/L Jan, Mar, May, Jul, Sep, Nov
D050Mercury, total [as Hg]DAILY MX <= 25.3 ng/L Jan, Mar, May, Jul, Sep, Nov
D050BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D050BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
D050BOD, carbonaceous [5 day, 20 C]MO AVG <= 141.9 kg/d all year
D050BOD, carbonaceous [5 day, 20 C]MX WK AV <= 227.1 kg/d all year
D050BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D050Solids, suspended percent removalMO AV MN >= 85 % all year
S051Precipitation, total defined period/inMO TOTAL report only all year
S051pHMO MIN report only all year
S051pHMO MAX report only all year
S051Solids, total suspendedMO AVG report only all year
S051Solids, total suspendedMO MAX report only all year
S051Nitrogen, total [as N]MO AVG report only all year
S051Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
S051Nitrite + Nitrate total [as N]MO AVG report only all year
S051Phosphorus, total [as P]MO AVG report only all year
S051Flow, in conduit or thru treatment plantMO AVG report only all year
S051Flow, in conduit or thru treatment plantMO MAX report only all year
S051Flow, in conduit or thru treatment plantMO TOTAL report only all year
S051Mercury, total [as Hg]MO AVG report only Jan, Mar, May, Jul, Sep, Nov
S051BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S051BOD, 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