CITY OF OSSIAN

NPDES permit IA0042781 · Minor POTW · administratively continued, expires 2006-09-03 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2006-09-03 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

1values over a limit
0required values missing, on 0 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Flow, in conduit or thru treatment plant (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 (66)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001pH30DA AVG report only all year
001pHDAILY MX report only 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 <= 195 lb/d all year
001Solids, total suspended7 DA AVG <= 293 lb/d all year
001Nitrogen, ammonia total [as N]30DA AVG <= 29 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 19 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 29 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 16 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 17 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 20 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 34 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 18 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 51 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 40 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 45 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 23 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 62 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 45 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 63 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 52 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 44 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 67 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 75 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 37 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 131 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 91 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 110 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 68 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 72 lb/d Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 47 lb/d Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 73 lb/d Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 40 lb/d Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 43 lb/d Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 51 lb/d May
001Nitrogen, ammonia total [as N]30DA AVG <= 84 lb/d Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 45 lb/d Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 126 lb/d Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 97 lb/d Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 111 lb/d Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 57 lb/d Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 152 lb/d Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 110 lb/d Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 154 lb/d Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 127 lb/d Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 107 lb/d Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 164 lb/d May
001Nitrogen, ammonia total [as N]DAILY MX <= 185 lb/d Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 90 lb/d Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 321 lb/d Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 224 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 269 lb/d Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 166 lb/d Apr
001Flow, in conduit or thru treatment plant30DA AVG <= .293 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= .44 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 <= 61 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 98 lb/d all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG report only all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]30DA AVG report only all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX 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