MIDDLETON, CITY OF

NPDES permit ID0021831 · Minor POTW · administratively continued, expires 2004-11-02 · 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 2004-11-02 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

0values over a limit
0required values missing, on 0 form(s)
1of 12 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 10 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (26)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMINIMUM report only all year
001Temperature, water deg. centigradeMAXIMUM report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 65 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 687 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 992 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 70 mg/L all year
001Solids, total suspendedWKLY AVG <= 105 mg/L all year
001Solids, total suspendedMO AVG <= 1070 lb/d all year
001Solids, total suspendedWKLY AVG <= 1605 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Coliform, fecal MF, MFC broth, 44.5 CMO GEO <= 100 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Coliform, fecal MF, MFC broth, 44.5 CMO GEO <= 50 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal MF, MFC broth, 44.5 CWB <= 200 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Coliform, fecal MF, MFC broth, 44.5 CWB <= 100 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal MF, MFC broth, 44.5 CDAILY MX <= 800 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Coliform, fecal MF, MFC broth, 44.5 CDAILY MX <= 500 #/100mL May, Jun, Jul, Aug, Sep
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Chlorine, total residualMO AVG <= .5 mg/L all year
001Chlorine, total residualMO AVG <= .1 mg/L all year
001Chlorine, total residualDAILY MX <= .1 mg/L all year
001BOD, 5-day, percent removalMN % RMV >= 65 % 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