CITY OF SHELBY

NPDES permit MT0031488 · Minor POTW · administratively continued, expires 2025-02-28 · 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 2025-02-28 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

10values over a limit
0required values missing, on 0 form(s)
1of 12 forms filed late

Last period with anything received: 2026-08-31. Most often over: Solids, total suspended (8), BOD, 5-day, percent removal (1), Solids, suspended percent removal (1).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (23)

OutfallParameterStatisticLimitMonths
001Flow rateMO AVG report only all year
001Flow rateDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CMX WK AV <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 87 lb/d all year
001BOD, 5-day, 20 deg. CMX WK AV <= 131 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001pHDAILY MN report only all year
001pHDAILY MX report only all year
001Solids, total suspendedMO AVG <= 45 mg/L all year
001Solids, total suspendedDAILY MX <= 65 mg/L all year
001Solids, total suspendedMO AVG <= 131 lb/d all year
001Solids, total suspendedMX WK AV <= 189 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Oil & GreaseDAILY MX <= 10 mg/L all year
001E. coli, MTEC-MFMO GEO <= 126 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coli, MTEC-MFMOAV GEO <= 630 #/100mL Jan, Feb, Mar, Nov, Dec
001E. coli, MTEC-MFDAILY MX <= 252 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coli, MTEC-MFMX WK AV <= 1260 #/100mL Jan, Feb, Mar, Nov, Dec
001BOD, 5-day, percent removalMO MIN >= 85 % all year
001Solids, suspended percent removalMO MIN >= 65 % all year
001Duration of dischargeTOTAL report only all year
001Oil and grease visualVALUE 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