Madison, City of

NPDES permit SD0020010 · Major POTW · effective, expires 2027-06-30 · 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.

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

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

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

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among SD permits in EPA's filings — check your permit).

Limits in force (19)

OutfallParameterStatisticLimitMonths
002Cyanide, weak acid, dissociableVALUE report only all year
002Cyanide, total [as CN]VALUE report only all year
002Hardness, total [as CaCO3]VALUE report only all year
002Arsenic, total recoverableVALUE report only all year
002Selenium, total recoverableVALUE report only all year
002Thallium, total recoverableVALUE report only all year
002Beryllium, total recoverable [as Be]VALUE report only all year
002Nickel, total recoverableVALUE report only all year
002Silver total recoverableVALUE report only all year
002Zinc, total recoverableVALUE report only all year
002Aluminum, total recoverableVALUE report only all year
002Cadmium, total recoverableVALUE report only all year
002Lead, total recoverableVALUE report only all year
002Chromium, total recoverableVALUE report only all year
002Copper, total recoverableVALUE report only all year
002Molybdenum, total recoverableVALUE report only all year
002Antimony, total recoverableVALUE report only all year
002PhenolsVALUE report only all year
002Mercury, total recoverableVALUE 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