MADISON METROPOLITAN SEWERAGE

NPDES permit WI0024597 · Major POTW · administratively continued, expires 2015-09-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2015-09-30 and is administratively continued: 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

1values over a limit
78required values missing, on 12 form(s)
25of 30 forms filed late

Last period with anything received: 2026-06-30. Most often over: Oxygen, dissolved [DO] (1).

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 (74)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 20 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 19 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 7923 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 8340 lb/d all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedWKLY AVG <= 23 mg/L all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedWKLY AVG <= 8340 lb/d all year
001Solids, total suspendedMO AVG <= 9591 lb/d all year
001Nitrogen, ammonia total [as N]WKLY AVG <= 4.4 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]WKLY AVG <= 10 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 1.8 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MO AVG <= 4.1 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 17 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 17 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Phosphorus, total [as P]MO AVG <= 1.5 mg/L all year
001Phosphorus, total [as P]DAILY MX report only all year
001Chloride [as Cl]WKLY AVG <= 481 mg/L all year
001Chloride [as Cl]DAILY MX report only all year
001Chloride [as Cl]MO AVG report only all year
001Chloride [as Cl]WKLY AVG <= 200000 lb/d all year
001Nickel, 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
001Chromium, total recoverableDAILY MX report only all year
001Copper, total recoverableDAILY MX report only all year
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 <= 5.7 ng/L all year
001Coliform, fecal generalGEO MEAN <= 400 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
005Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
005BOD, 5-day, 20 deg. CWKLY AVG <= 16 mg/L Jan, Feb, Mar, Apr, Nov, Dec
005BOD, 5-day, 20 deg. CWKLY AVG <= 7 mg/L May, Jun, Jul, Aug, Sep, Oct
005BOD, 5-day, 20 deg. CMO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
005BOD, 5-day, 20 deg. CMO AVG report only May, Jun, Jul, Aug, Sep, Oct
005BOD, 5-day, 20 deg. CDAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
005BOD, 5-day, 20 deg. CDAILY MX report only May, Jun, Jul, Aug, Sep, Oct
005pHDAILY MN >= 6 SU all year
005pHDAILY MX <= 9 SU all year
005Solids, total suspendedMO AVG <= 10 mg/L May, Jun, Jul, Aug, Sep, Oct
005Solids, total suspendedMO AVG <= 16 mg/L Jan, Feb, Mar, Apr, Nov, Dec
005Solids, total suspendedDAILY MX report only May, Jun, Jul, Aug, Sep, Oct
005Solids, total suspendedDAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
005Nitrogen, ammonia total [as N]WKLY AVG <= 8.7 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
005Nitrogen, ammonia total [as N]WKLY AVG <= 2.6 mg/L May, Jun, Jul, Aug, Sep
005Nitrogen, ammonia total [as N]MO AVG <= 3.8 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
005Nitrogen, ammonia total [as N]MO AVG <= 1.1 mg/L May, Jun, Jul, Aug, Sep
005Nitrogen, ammonia total [as N]DAILY MX <= 11 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
005Nitrogen, ammonia total [as N]DAILY MX <= 11 mg/L May, Jun, Jul, Aug, Sep
005Phosphorus, total [as P]MO AVG <= 1.5 mg/L all year
005Chloride [as Cl]WKLY AVG <= 481 mg/L all year
005Chloride [as Cl]WKLY AVG <= 14000 lb/d all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Mercury, total recoverableDAILY MX <= 5.7 ng/L all year
005Coliform, fecal generalGEO MEAN <= 400 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
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
701Nickel, total recoverableDAILY MX report only all year
701Zinc, total recoverableDAILY MX report only all year
701Cadmium, total recoverableDAILY MX report only all year
701Lead, total recoverableDAILY MX report only all year
701Chromium, total recoverableDAILY MX report only all year
701Copper, total recoverableDAILY 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

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