City of Eau Claire

NPDES permit WI0023850 · 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
6required values missing, on 3 form(s)
8of 24 forms filed late

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

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (45)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX report only all year
001Nitrogen, total [as N]QB report only all year
001Nitrogen, ammonia total [as N]WKLY AVG <= 29 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 29 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX <= 29 mg/L all year
001Nitrogen, Kjeldahl, total [as N]QB report only all year
001Nitrite + Nitrate total [as N]QB report only all year
001Phosphorus, total [as P]MO AVG <= 1 mg/L all year
001Phosphorus, total [as P]DAILY MX report only all year
001Cyanide, total [as CN]DAILY MX report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Nickel, total recoverableDAILY MX report only all year
001Silver total recoverableDAILY MX report only all year
001Zinc, total recoverableDAILY MX report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Lead, total recoverableDAILY MX report only all year
001Copper, total recoverableDAILY MX report only all year
001Chlorine, total residualWKLY AVG <= 38 ug/L May, Jun, Jul, Aug, Sep
001Chlorine, total residualMO AVG <= 38 ug/L May, Jun, Jul, Aug, Sep
001Chlorine, total residualDAILY MX <= 38 ug/L May, Jun, Jul, Aug, Sep
001Mercury, total recoverableDAILY MX report only all year
001Coliform, fecal generalWK GEOMN <= 780 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal generalGEO MEAN <= 400 #/100mL May, Jun, Jul, Aug, Sep
702BOD, 5-day, 20 deg. CMO AVG report only all year
702BOD, 5-day, 20 deg. CDAILY MX report only all year
702Solids, total suspendedMO AVG report only all year
702Solids, total suspendedDAILY MX report only all year
702Cyanide, total [as CN]DAILY MX report only all year
702Nickel, total recoverableDAILY MX report only all year
702Silver total recoverableDAILY MX report only all year
702Zinc, total recoverableDAILY MX report only all year
702Cadmium, total recoverableDAILY MX report only all year
702Lead, total recoverableDAILY MX report only all year
702Chromium, total recoverableDAILY MX report only all year
702Copper, total recoverableDAILY MX report only all year
702Flow, in conduit or thru treatment plantMO AVG report only all year
702Flow, in conduit or thru treatment plantDAILY MX report only all year
702Mercury, total recoverableDAILY MX 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