CITY OF BIRMINGHAM

NPDES permit IA0023426 · Minor POTW · administratively continued, expires 2002-07-27 · 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 2002-07-27 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

5values over a limit
0required values missing, on 0 form(s)
0of 12 forms filed late

Last period with anything received: 2026-08-31. Most often over: Flow, in conduit or thru treatment plant (4), Nitrogen, ammonia total [as N] (1).

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among IA permits in EPA's filings — check your permit).

Limits in force (22)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]30DA AVG report only all year
001Oxygen, dissolved [DO]DAILY MX report only all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspended30DA AVG <= 80 mg/L all year
001Solids, total suspended7 DA AVG <= 120 mg/L all year
001Solids, total suspended30DA AVG <= 127 lb/d all year
001Solids, total suspended7 DA AVG <= 190 lb/d all year
001Nitrogen, ammonia total [as N]30DA AVG <= 8.7 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 8.7 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 13 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 13 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 14 lb/d Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 14 lb/d Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 21 lb/d Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 21 lb/d Aug
001Flow, in conduit or thru treatment plant30DA AVG <= .19 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= .377 MGD all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG <= 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]30DA AVG <= 40 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 63 lb/d 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