City of Tomah

NPDES permit WI0021318 · Major POTW · expired, expires 2024-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2024-03-31 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

13values over a limit
10required values missing, on 7 form(s)
0of 28 forms filed late

Last period with anything received: 2026-06-30. Most often over: BOD, 5-day, 20 deg. C (10), Solids, total suspended (2), Nitrogen, ammonia total [as N] (1).

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among WI permits in EPA's filings — check your permit).

Limits in force (54)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 8.5 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 15 mg/L May, Jun, Sep, Oct
001BOD, 5-day, 20 deg. CWKLY AVG <= 13 mg/L Jul, Aug
001BOD, 5-day, 20 deg. CMO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 15 mg/L May, Jun, Sep, Oct
001BOD, 5-day, 20 deg. CMO AVG <= 13 mg/L Jul, Aug
001BOD, 5-day, 20 deg. CDAILY MX report only May, Jun, Sep, Oct
001BOD, 5-day, 20 deg. CMO AVG report only May, Jun, Sep, Oct
001BOD, 5-day, 20 deg. CWKLY AVG <= 479 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 288 lb/d May, Jun, Sep, Oct
001BOD, 5-day, 20 deg. CWKLY AVG <= 249 lb/d Jul, Aug
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedWKLY AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedWKLY AVG <= 15 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 15 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedDAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG report only May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedWKLY AVG <= 479 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedWKLY AVG <= 288 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]QB report only all year
001Nitrogen, ammonia total [as N]WKLY AVG <= 9.4 mg/L Apr, May
001Nitrogen, ammonia total [as N]WKLY AVG <= 5.3 mg/L Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]WKLY AVG <= 9.4 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 7.3 mg/L Apr, May
001Nitrogen, ammonia total [as N]MO AVG <= 4.7 mg/L Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MO AVG <= 9.4 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 9.4 mg/L Apr, May
001Nitrogen, ammonia total [as N]DAILY MX <= 5.3 mg/L Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 9.4 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, Kjeldahl, total [as N]QB report only all year
001Nitrite + Nitrate total [as N]QB report only all year
001Phosphorus, total [as P]6D <= .6 mg/L Apr, Oct
001Phosphorus, total [as P]MO AVG <= 1 mg/L Apr, Oct
001Phosphorus, total [as P]MO AVG <= 1 mg/L Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Nov, Dec
001Phosphorus, total [as P]MO AVG report only Apr, Oct
001Phosphorus, total [as P]MO AVG report only Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only Apr, Oct
001Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Nov, Dec
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Mercury, total recoverableDAILY MX <= 3.8 ng/L all year
001Coliform, fecal generalWK GEOMN <= 780 #/100mL May, Jun, Jul, Aug, Sep
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 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