CITY OF FORT ATKINSON

NPDES permit WI0022489 · Major POTW · expired, expires 2024-06-30 · 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 2024-06-30 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
28required values missing, on 22 form(s)
8of 28 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 (43)

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 Feb
001Solids, total suspendedWKLY AVG <= 45 mg/L Apr, Jun, Sep, Nov
001Solids, total suspendedWKLY AVG <= 45 mg/L Jan, Mar, May, Jul, Aug, Oct, Dec
001Solids, total suspendedMO AVG <= 30 mg/L Feb
001Solids, total suspendedMO AVG <= 30 mg/L Apr, Jun, Sep, Nov
001Solids, total suspendedMO AVG <= 30 mg/L Jan, Mar, May, Jul, Aug, Oct, Dec
001Solids, total suspendedDAILY MX report only Feb
001Solids, total suspendedDAILY MX report only Apr, Jun, Sep, Nov
001Solids, total suspendedDAILY MX report only Jan, Mar, May, Jul, Aug, Oct, Dec
001Solids, total suspendedMO AVG <= 732 lb/d Feb
001Solids, total suspendedMO AVG <= 683 lb/d Apr, Jun, Sep, Nov
001Solids, total suspendedMO AVG <= 659 lb/d Jan, Mar, May, Jul, Aug, Oct, Dec
001Solids, total suspendedWKLY AVG <= 966 lb/d Feb
001Solids, total suspendedWKLY AVG <= 902 lb/d Apr, Jun, Sep, Nov
001Solids, total suspendedWKLY AVG <= 870 lb/d Jan, Mar, May, Jul, Aug, Oct, Dec
001Nitrogen, total [as N]QB report only all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX <= 14 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 <= 1.5 mg/L all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Chlorine, total residualWKLY AVG <= 30 ug/L May, Jun, Jul, Aug, Sep
001Chlorine, total residualMO AVG report only May, Jun, Jul, Aug, Sep
001Chlorine, total residualDAILY MX <= 38 ug/L May, Jun, Jul, Aug, Sep
001Mercury, total recoverableDAILY MX <= 5 ng/L all year
001Mercury, total recoverableQB report only all year
001Coliform, fecal generalGEO MEAN <= 400 #/100mL May, Jun, Jul, Aug, Sep
701BOD, 5-day, 20 deg. CMO AVG report only all year
701BOD, 5-day, 20 deg. CDAILY MX report only all year
701Solids, total suspendedMO AVG report only all year
701Solids, total suspendedDAILY MX report only all year
701Flow, in conduit or thru treatment plantMO AVG report only all year
701Flow, in conduit or thru treatment plantDAILY MX report only all year
701Mercury, total recoverableDAILY MX report only all year
701Mercury, total recoverableQB 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