CITY OF CEDAR RAPIDS

NPDES permit IA0053447 · Minor NON-POTW · effective, expires 2028-02-29 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

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

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (100)

OutfallParameterStatisticLimitMonths
001Nitrogen, ammonia total [as N]30DA AVG <= 8.9 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 12.4 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 10.2 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 5.6 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 7.9 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 8.4 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 6.7 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 6.6 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 9.7 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 10.6 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 12.9 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 6.6 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 8.9 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 12.4 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 10.2 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 5.6 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 8.9 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 8.4 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 6.8 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 6.6 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 9.7 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 10.6 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 12.9 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 6.6 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 1850.2 lb/d Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 2585.6 lb/d May
001Nitrogen, ammonia total [as N]30DA AVG <= 2123.4 lb/d Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 1170.4 lb/d Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 1650.1 lb/d Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 1743.5 lb/d Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 1403.6 lb/d Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 1375 lb/d Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 2025.3 lb/d Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 2217.3 lb/d Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 2700.1 lb/d Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 1379.5 lb/d Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 1850.2 lb/d Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 2585.6 lb/d May
001Nitrogen, ammonia total [as N]DAILY MX <= 2123.4 lb/d Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 1170.4 lb/d Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 1851.5 lb/d Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 1743.5 lb/d Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 1415.3 lb/d Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 1375 lb/d Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 2025.3 lb/d Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 2217.3 lb/d Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 2700.1 lb/d Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 1379.5 lb/d Nov
001Iron, total [as Fe]30DA AVG <= 10 mg/L all year
001Iron, total [as Fe]DAILY MX <= 10 mg/L all year
001Iron, total [as Fe]30DA AVG <= 2085 lb/d all year
001Iron, total [as Fe]DAILY MX <= 2085 lb/d all year
001Iron, dissolved [as Fe]30DA AVG <= 1.19 mg/L Dec
001Iron, dissolved [as Fe]30DA AVG <= 1.4 mg/L Oct
001Iron, dissolved [as Fe]30DA AVG <= 1.4 mg/L Nov
001Iron, dissolved [as Fe]30DA AVG <= 1.4 mg/L Mar
001Iron, dissolved [as Fe]30DA AVG <= 1.89 mg/L Apr
001Iron, dissolved [as Fe]30DA AVG <= 1.55 mg/L Aug
001Iron, dissolved [as Fe]30DA AVG <= 1.78 mg/L Jul
001Iron, dissolved [as Fe]30DA AVG <= 1.27 mg/L Feb
001Iron, dissolved [as Fe]30DA AVG <= 1.44 mg/L Sep
001Iron, dissolved [as Fe]30DA AVG <= 2.17 mg/L May
001Iron, dissolved [as Fe]30DA AVG <= 1.2 mg/L Jan
001Iron, dissolved [as Fe]30DA AVG <= 2.27 mg/L Jun
001Iron, dissolved [as Fe]DAILY MX <= 1.19 mg/L Dec
001Iron, dissolved [as Fe]DAILY MX <= 1.4 mg/L Oct
001Iron, dissolved [as Fe]DAILY MX <= 1.4 mg/L Nov
001Iron, dissolved [as Fe]DAILY MX <= 1.4 mg/L Mar
001Iron, dissolved [as Fe]DAILY MX <= 1.89 mg/L Apr
001Iron, dissolved [as Fe]DAILY MX <= 1.55 mg/L Aug
001Iron, dissolved [as Fe]DAILY MX <= 1.78 mg/L Jul
001Iron, dissolved [as Fe]DAILY MX <= 1.27 mg/L Feb
001Iron, dissolved [as Fe]DAILY MX <= 1.44 mg/L Sep
001Iron, dissolved [as Fe]DAILY MX <= 2.17 mg/L May
001Iron, dissolved [as Fe]DAILY MX <= 1.2 mg/L Jan
001Iron, dissolved [as Fe]DAILY MX <= 2.27 mg/L Jun
001Iron, dissolved [as Fe]30DA AVG <= 249 lb/d Dec
001Iron, dissolved [as Fe]30DA AVG <= 292 lb/d Oct
001Iron, dissolved [as Fe]30DA AVG <= 293 lb/d Nov
001Iron, dissolved [as Fe]30DA AVG <= 293 lb/d Mar
001Iron, dissolved [as Fe]30DA AVG <= 394 lb/d Apr
001Iron, dissolved [as Fe]30DA AVG <= 324 lb/d Aug
001Iron, dissolved [as Fe]30DA AVG <= 371 lb/d Jul
001Iron, dissolved [as Fe]30DA AVG <= 264 lb/d Feb
001Iron, dissolved [as Fe]30DA AVG <= 301 lb/d Sep
001Iron, dissolved [as Fe]30DA AVG <= 453 lb/d May
001Iron, dissolved [as Fe]30DA AVG <= 251 lb/d Jan
001Iron, dissolved [as Fe]30DA AVG <= 472 lb/d Jun
001Iron, dissolved [as Fe]DAILY MX <= 249 lb/d Dec
001Iron, dissolved [as Fe]DAILY MX <= 292 lb/d Oct
001Iron, dissolved [as Fe]DAILY MX <= 293 lb/d Nov
001Iron, dissolved [as Fe]DAILY MX <= 293 lb/d Mar
001Iron, dissolved [as Fe]DAILY MX <= 394 lb/d Apr
001Iron, dissolved [as Fe]DAILY MX <= 324 lb/d Aug
001Iron, dissolved [as Fe]DAILY MX <= 371 lb/d Jul
001Iron, dissolved [as Fe]DAILY MX <= 264 lb/d Feb
001Iron, dissolved [as Fe]DAILY MX <= 301 lb/d Sep
001Iron, dissolved [as Fe]DAILY MX <= 453 lb/d May
001Iron, dissolved [as Fe]DAILY MX <= 251 lb/d Jan
001Iron, dissolved [as Fe]DAILY MX <= 472 lb/d Jun

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