A.Y. MCDONALD INDUSTRIES, INC.

NPDES permit IA0063860 · Minor NON-POTW · effective, expires 2028-03-31 · 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

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

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

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 (30)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheit30DA AVG <= 87.3 deg F Apr
001Temperature, water deg. fahrenheit30DA AVG <= 98.1 deg F Oct
001Temperature, water deg. fahrenheit30DA AVG <= 71.6 deg F Dec
001Temperature, water deg. fahrenheit30DA AVG <= 80.6 deg F Nov
001Temperature, water deg. fahrenheit30DA AVG <= 95.8 deg F Aug
001Temperature, water deg. fahrenheit30DA AVG <= 89.8 deg F May
001Temperature, water deg. fahrenheit30DA AVG <= 80.4 deg F Feb
001Temperature, water deg. fahrenheit30DA AVG <= 101.1 deg F Sep
001Temperature, water deg. fahrenheit30DA AVG <= 70.9 deg F Jan
001Temperature, water deg. fahrenheit30DA AVG <= 87.4 deg F Mar
001Temperature, water deg. fahrenheit30DA AVG <= 95.4 deg F Jun
001Temperature, water deg. fahrenheit30DA AVG <= 97.1 deg F Jul
001Temperature, water deg. fahrenheitDAILY MX <= 117.9 deg F Apr
001Temperature, water deg. fahrenheitDAILY MX <= 109.5 deg F Oct
001Temperature, water deg. fahrenheitDAILY MX <= 132.9 deg F Dec
001Temperature, water deg. fahrenheitDAILY MX <= 122.2 deg F Nov
001Temperature, water deg. fahrenheitDAILY MX <= 95.8 deg F Aug
001Temperature, water deg. fahrenheitDAILY MX <= 110.5 deg F May
001Temperature, water deg. fahrenheitDAILY MX <= 139 deg F Feb
001Temperature, water deg. fahrenheitDAILY MX <= 101.7 deg F Sep
001Temperature, water deg. fahrenheitDAILY MX <= 138 deg F Jan
001Temperature, water deg. fahrenheitDAILY MX <= 132 deg F Mar
001Temperature, water deg. fahrenheitDAILY MX <= 103.3 deg F Jun
001Temperature, water deg. fahrenheitDAILY MX <= 97.1 deg F Jul
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Iron, total [as Fe]30DA AVG <= 1.08 mg/L all year
001Iron, total [as Fe]DAILY MX <= 1.08 mg/L all year
001Iron, total [as Fe]30DA AVG <= 1.53 lb/d all year
001Iron, total [as Fe]DAILY MX <= 1.53 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