DON & LOIS KNAPP

NPDES permit IA0071811 · Minor NON-POTW · effective, expires 2028-06-30 · 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.

EPA's record, 2025-09-01 to 2026-08-31

5values over a limit
8required values missing, on 2 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, carbonaceous [5 day, 20 C] (3), Solids, total suspended (2).

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 (60)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 1 mg/L all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspended30DA AVG <= 1.6 lb/d all year
001Solids, total suspended7 DA AVG <= 2.4 lb/d all year
001Nitrogen, ammonia total [as N]30DA AVG <= 40.7 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 42 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 37.4 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 39.4 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 41.4 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 42.7 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 38.1 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 39.4 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 36.8 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 38.1 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 45.6 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 40.7 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 40.7 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 42 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 37.4 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 39.4 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 41.4 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 42.7 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 38.1 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 39.4 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 36.8 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 38.1 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 45.6 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 40.7 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 2.1 lb/d Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 2.2 lb/d Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 2 lb/d Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 2.1 lb/d May
001Nitrogen, ammonia total [as N]30DA AVG <= 2.2 lb/d Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 2.2 lb/d Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 2 lb/d Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 2.1 lb/d Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 1.9 lb/d Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 2 lb/d Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 2.4 lb/d Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 2.1 lb/d Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 2.1 lb/d Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 2.2 lb/d Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 2 lb/d Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 2.1 lb/d May
001Nitrogen, ammonia total [as N]DAILY MX <= 2.2 lb/d Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 2.2 lb/d Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 2 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 2.1 lb/d Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 1.9 lb/d Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 2 lb/d Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 2.4 lb/d Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 2.1 lb/d Apr
001E. coliGEO MEAN <= 224 #/100mL Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
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 <= 1.3 lb/d all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 2.1 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