MT PLEASANT WWTP

NPDES permit MI0023655 · Major POTW · expired, expires 2025-03-05 · 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 2025-03-05 and is expired: 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

7values over a limit
0required values missing, on 0 form(s)
0of 14 forms filed late

Last period with anything received: 2026-06-30. Most often over: Phosphorus, total [as P] (6), Nitrogen, ammonia total [as N] (1).

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 (114)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 7 mg/L all year
001Oxygen, dissolved [DO]DAILY MN >= 7 mg/L all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001pHDAILY MX <= 9 SU all year
001pHMINIMUM report only all year
001pHMINIMUM report only all year
001pHMAXIMUM report only all year
001pHMAXIMUM report only all year
001Solids, total suspended30DA AVG <= 30 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, total suspended30DA AVG <= 30 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, total suspended30DA AVG <= 26 mg/L Jun, Jul, Aug, Sep
001Solids, total suspended30DA AVG <= 26 mg/L Jun, Jul, Aug, Sep
001Solids, total suspended7 DA AVG <= 45 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, total suspended7 DA AVG <= 45 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, total suspended7 DA AVG <= 39 mg/L Jun, Jul, Aug, Sep
001Solids, total suspended7 DA AVG <= 39 mg/L Jun, Jul, Aug, Sep
001Solids, total suspended30DA AVG <= 1000 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, total suspended30DA AVG <= 1000 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, total suspended30DA AVG <= 900 lb/d Jun, Jul, Aug, Sep
001Solids, total suspended30DA AVG <= 900 lb/d Jun, Jul, Aug, Sep
001Solids, total suspended7 DA AVG <= 1600 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, total suspended7 DA AVG <= 1600 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, total suspended7 DA AVG <= 1300 lb/d Jun, Jul, Aug, Sep
001Solids, total suspended7 DA AVG <= 1300 lb/d Jun, Jul, Aug, Sep
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMO AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 4.7 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 4.7 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]7 DA AVG <= 160 lb/d May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]7 DA AVG <= 160 lb/d May, Jun, Jul, Aug, Sep
001Phosphorus, total [as P]30DA AVG <= 1 mg/L all year
001Phosphorus, total [as P]30DA AVG <= 1 mg/L all year
001Phosphorus, total [as P]7 DA AVG <= 2 mg/L all year
001Phosphorus, total [as P]7 DA AVG <= 2 mg/L all year
001Phosphorus, total [as P]30DA AVG <= 35 lb/d all year
001Phosphorus, total [as P]30DA AVG <= 35 lb/d all year
001Phosphorus, total [as P]7 DA AVG <= 69 lb/d all year
001Phosphorus, total [as P]7 DA AVG <= 69 lb/d all year
001Flow, in conduit or thru treatment plant30DA AVG report only all year
001Flow, in conduit or thru treatment plant30DA AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX 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 plantMO AVG report only all year
001Chlorine, total residualDAILY MX <= .038 mg/L all year
001Chlorine, total residualDAILY MX <= .038 mg/L all year
001E. coli30DA GM <= 126 #/100mL all year
001E. coli30DA GM <= 126 #/100mL all year
001E. coliDAILY MX <= 410 #/100mL all year
001E. coliDAILY MX <= 410 #/100mL all year
001Cyanide, free available30DA AVG <= 21 ug/L all year
001Cyanide, free available30DA AVG <= 21 ug/L all year
001Cyanide, free available30DA AVG <= .7 lb/d all year
001Cyanide, free available30DA AVG <= .7 lb/d all year
001Mercury, total [as Hg]30DA AVG report only all year
001Mercury, total [as Hg]30DA AVG report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]30DA AVG report only all year
001Mercury, total [as Hg]30DA AVG report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]ROLL AVG <= 7 ng/L all year
001Mercury, total [as Hg]ROLL AVG <= 7 ng/L all year
001Mercury, total [as Hg]ROLL AVG <= .00024 lb/d all year
001Mercury, total [as Hg]ROLL AVG <= .00024 lb/d all year
001Coliform, fecal generalGX <= 200 #/100mL (alert) all year
001Coliform, fecal generalGX <= 200 #/100mL (alert) all year
001Coliform, fecal generalMX 7D GM <= 400 #/100mL (alert) all year
001Coliform, fecal generalMX 7D GM <= 400 #/100mL (alert) all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 25 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 25 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 7 mg/L May, Jun, Jul, Aug, Sep
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 7 mg/L May, Jun, Jul, Aug, Sep
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 40 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 40 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 10 mg/L May, Jun, Jul, Aug, Sep
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 10 mg/L May, Jun, Jul, Aug, Sep
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 860 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 860 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 240 lb/d May, Jun, Jul, Aug, Sep
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 240 lb/d May, Jun, Jul, Aug, Sep
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 1400 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 1400 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 340 lb/d May, Jun, Jul, Aug, Sep
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 340 lb/d May, Jun, Jul, Aug, Sep
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carb-5 day, 20 deg C, percent removalMN % RMV >= 85 % Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, carb-5 day, 20 deg C, percent removalMN % RMV >= 85 % Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Solids, suspended percent removalMN % RMV >= 85 % Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Solids, suspended percent removalMN % RMV >= 85 % Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Outfall observation,visual, y/n response7 DA AVG report only all year
001Outfall observation,visual, y/n response7 DA AVG 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