8 1/2 Mile Relief Drain Drainage District

NPDES permit MI0025585 · Minor POTW · effective, expires 2027-10-01 · 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 11 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 21 days after each monitoring period ends (the most common figure among MI permits in EPA's filings — check your permit).

Limits in force (15)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN report only all year
001pHDAILY MN report only all year
001pHDAILY MX report only all year
001Solids, total suspendedMAXIMUM report only all year
001Nitrogen, ammonia total [as N]MAXIMUM report only all year
001Phosphorus, total [as P]MAXIMUM 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
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX <= 1.5 mg/L all year
001Chlorine, total residualINST MAX report only all year
001E. coliDAILY MX <= 300 #/100mL May, Jun, Jul, Aug, Sep, Oct
001E. coliDAILY MX <= 1000 #/100mL Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MAXIMUM 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