NILES WWTP

NPDES permit MI0023701 · Major POTW · administratively continued, expires 2017-10-01 · 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.

This permit expired on 2017-10-01 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)
0of 12 forms filed late

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

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 (24)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMX MO AV <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspendedMX MO AV <= 1500 lb/d all year
001Solids, total suspended7 DA AVG <= 2200 lb/d all year
001Phosphorus, total [as P]MX MO AV <= 1 mg/L all year
001Phosphorus, total [as P]MX MO AV <= 48 lb/d all year
001Flow, in conduit or thru treatment plantMX MO AV report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX <= .038 mg/L all year
001Mercury, total [as Hg]MX MO AV report only all year
001Mercury, total [as Hg]MX MO AV report only all year
001Mercury, total [as Hg]1D <= 3 ng/L all year
001Mercury, total [as Hg]1D <= .00015 lb/d all year
001Coliform, fecal generalMX <= 200 #/100mL all year
001Coliform, fecal generalMX 7D GM <= 400 #/100mL all year
001BOD, carbonaceous [5 day, 20 C]MX MO AV <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MX MO AV <= 1200 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 1900 lb/d all year
001BOD, carb-5 day, 20 deg C, percent removalMN % RMV >= 76 % all year
001Solids, suspended percent removalMN % RMV >= 76 % 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