Morton Salt, Incorporated

NPDES permit MI0001503 · Major NON-POTW · effective, expires 2027-10-01 · 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

4values over a limit
0required values missing, on 0 form(s)
18of 66 forms filed late

Last period with anything received: 2026-07-31. Most often over: pH (4).

Reporting

Reports are due about 21 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (49)

OutfallParameterStatisticLimitMonths
003Temperature, water deg. fahrenheitDAILY MX report only all year
003Temperature, water deg. fahrenheitDAILY MX report only all year
003Thermal DischargeDAILY MX report only all year
003Thermal DischargeDAILY MX = 137 MBTU/hr all year
003Oxygen, dissolved [DO]DAILY MN >= 2 mg/L all year
003pHDAILY MN >= 6.5 SU all year
003pHDAILY MX <= 9 SU all year
003Solids, total suspendedMO AVG report only all year
003Solids, total suspendedDAILY MX report only all year
003Solids, total suspendedMO AVG report only all year
003Solids, total suspendedDAILY MX report only all year
003Solids, total suspendedMO AVG report only all year
003Solids, total suspendedDAILY MX report only all year
003Solids, total suspendedMO AVG report only all year
003Solids, total suspendedDAILY MX report only all year
003Solids, total suspendedMO AVG = 280 lb/d all year
003Solids, total suspendedDAILY MX = 570 lb/d all year
003Solids, total suspendedMO AVG report only all year
003Solids, total suspendedDAILY MX report only all year
003Solids, total suspendedMO AVG report only all year
003Solids, total suspendedDAILY MX report only all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Outfall observation,visual, y/n responseVALUE report only all year
005Temperature, water deg. fahrenheitDAILY MX report only all year
005Thermal DischargeDAILY MX report only all year
005Oxygen, dissolved [DO]DAILY MN >= 4 mg/L all year
005pHDAILY MN >= 6.5 SU all year
005pHDAILY MX <= 9 SU all year
005Solids, total suspendedMO AVG report only all year
005Solids, total suspendedDAILY MX report only all year
005Solids, total suspendedMO AVG report only all year
005Solids, total suspendedDAILY MX report only all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Outfall observation,visual, y/n responseVALUE report only all year
006Temperature, water deg. fahrenheitDAILY MX report only all year
006Thermal DischargeDAILY MX report only all year
006Oxygen, dissolved [DO]DAILY MN >= 4 mg/L all year
006pHDAILY MN >= 6.5 SU all year
006pHDAILY MX <= 9 SU all year
006Chloride [as Cl]DAILY MX report only all year
006Sulfate, total [as SO4]DAILY MX report only all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
006Solids, total dissolvedDAILY MX report only all year
006Outfall observation,visual, y/n responseVALUE 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