Dow Chemical Company

NPDES permit MI0059217 · Minor NON-POTW · effective, expires 2028-10-01 · 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

0values over a limit
0required values missing, on 0 form(s)
0of 22 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 21 days after each monitoring period ends (the most common figure among MI permits in EPA's filings — check your permit).

Limits in force (136)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 3 mg/L all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG <= 1 mg/L all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG <= 3.5 lb/d all year
001Phosphorus, total [as P]DAILY MX report only all year
001Chloride [as Cl]DAILY MX report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Benzene, ethylbenzene, toluene, xylene combinationDAILY MX <= 20 ug/L all year
001TolueneDAILY MX report only all year
001TolueneDAILY MX report only all year
001BenzeneDAILY MX <= 5 ug/L all year
001BenzeneDAILY MX report only all year
001AcenaphthyleneDAILY MX <= 5 ug/L all year
001AcenaphthyleneDAILY MX report only all year
001AcenaphtheneDAILY MX <= 5 ug/L all year
001AcenaphtheneDAILY MX report only all year
001AnthraceneDAILY MX <= 5 ug/L all year
001AnthraceneDAILY MX report only all year
001Benzo[b]fluorantheneMO AVG <= .31 ug/L all year
001Benzo[b]fluorantheneDAILY MX report only all year
001Benzo[b]fluorantheneDAILY MX report only all year
001Benzo[k]fluorantheneMO AVG <= .31 ug/L all year
001Benzo[k]fluorantheneDAILY MX report only all year
001Benzo[k]fluorantheneDAILY MX report only all year
001Benzo[a]pyreneMO AVG <= .31 ug/L all year
001Benzo[a]pyreneDAILY MX report only all year
001Benzo[a]pyreneDAILY MX report only all year
001ChryseneMO AVG <= .31 ug/L all year
001ChryseneDAILY MX report only all year
001ChryseneDAILY MX report only all year
001EthylbenzeneDAILY MX report only all year
001EthylbenzeneDAILY MX report only all year
001FluorantheneMO AVG <= 1.6 ug/L all year
001FluorantheneDAILY MX report only all year
001FluorantheneDAILY MX report only all year
001FluoreneDAILY MX <= 5 ug/L all year
001FluoreneDAILY MX report only all year
001Indeno[1,2,3-cd]pyreneMO AVG <= .31 ug/L all year
001Indeno[1,2,3-cd]pyreneDAILY MX report only all year
001Indeno[1,2,3-cd]pyreneDAILY MX report only all year
001PhenanthreneMO AVG <= 1.4 ug/L all year
001PhenanthreneDAILY MX report only all year
001PhenanthreneDAILY MX report only all year
001PyreneDAILY MX <= 5 ug/L all year
001PyreneDAILY MX report only all year
001Benzo[ghi]peryleneDAILY MX <= 5 ug/L all year
001Benzo[ghi]peryleneDAILY MX report only all year
001Benzo[a]anthraceneMO AVG <= .31 ug/L all year
001Benzo[a]anthraceneDAILY MX report only all year
001Benzo[a]anthraceneDAILY MX report only all year
001Dibenz[a,h]anthraceneMO AVG <= .31 ug/L all year
001Dibenz[a,h]anthraceneDAILY MX report only all year
001Dibenz[a,h]anthraceneDAILY MX report only all year
001NaphthaleneDAILY MX <= 5 ug/L all year
001NaphthaleneDAILY MX report only all year
001Equipment inspection - visualVALUE report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Solids, total dissolvedDAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
001Xylene [mix of m+o+p]DAILY MX report only all year
001Xylene [mix of m+o+p]DAILY MX report only all year
001Outfall observation,visual, y/n responseVALUE report only all year
002Oxygen, dissolved [DO]DAILY MN >= 3 mg/L all year
002pHDAILY MN >= 6.5 SU all year
002pHDAILY MX <= 9 SU all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Phosphorus, total [as P]MO AVG <= 1 mg/L all year
002Phosphorus, total [as P]DAILY MX report only all year
002Phosphorus, total [as P]MO AVG <= 3.5 lb/d all year
002Phosphorus, total [as P]DAILY MX report only all year
002Chloride [as Cl]DAILY MX report only all year
002Sulfate, total [as SO4]DAILY MX report only all year
002Benzene, ethylbenzene, toluene, xylene combinationDAILY MX <= 20 ug/L all year
002TolueneDAILY MX report only all year
002TolueneDAILY MX report only all year
002BenzeneDAILY MX <= 5 ug/L all year
002BenzeneDAILY MX report only all year
002AcenaphthyleneDAILY MX <= 5 ug/L all year
002AcenaphthyleneDAILY MX report only all year
002AcenaphtheneDAILY MX <= 5 ug/L all year
002AcenaphtheneDAILY MX report only all year
002AnthraceneDAILY MX <= 5 ug/L all year
002AnthraceneDAILY MX report only all year
002Benzo[b]fluorantheneMO AVG <= .31 ug/L all year
002Benzo[b]fluorantheneDAILY MX report only all year
002Benzo[b]fluorantheneDAILY MX report only all year
002Benzo[k]fluorantheneMO AVG <= .31 ug/L all year
002Benzo[k]fluorantheneDAILY MX report only all year
002Benzo[k]fluorantheneDAILY MX report only all year
002Benzo[a]pyreneMO AVG <= .31 ug/L all year
002Benzo[a]pyreneDAILY MX report only all year
002Benzo[a]pyreneDAILY MX report only all year
002ChryseneMO AVG <= .31 ug/L all year
002ChryseneDAILY MX report only all year
002ChryseneDAILY MX report only all year
002EthylbenzeneDAILY MX report only all year
002EthylbenzeneDAILY MX report only all year
002FluorantheneMO AVG <= 1.6 ug/L all year
002FluorantheneDAILY MX report only all year
002FluorantheneDAILY MX report only all year
002FluoreneDAILY MX <= 5 ug/L all year
002FluoreneDAILY MX report only all year
002Indeno[1,2,3-cd]pyreneMO AVG <= .31 ug/L all year
002Indeno[1,2,3-cd]pyreneDAILY MX report only all year
002Indeno[1,2,3-cd]pyreneDAILY MX report only all year
002PhenanthreneMO AVG <= 1.4 ug/L all year
002PhenanthreneDAILY MX report only all year
002PhenanthreneDAILY MX report only all year
002PyreneDAILY MX <= 5 ug/L all year
002PyreneDAILY MX report only all year
002Benzo[ghi]peryleneDAILY MX <= 5 ug/L all year
002Benzo[ghi]peryleneDAILY MX report only all year
002Benzo[a]anthraceneMO AVG <= .31 ug/L all year
002Benzo[a]anthraceneDAILY MX report only all year
002Benzo[a]anthraceneDAILY MX report only all year
002Dibenz[a,h]anthraceneMO AVG <= .31 ug/L all year
002Dibenz[a,h]anthraceneDAILY MX report only all year
002Dibenz[a,h]anthraceneDAILY MX report only all year
002NaphthaleneDAILY MX <= 5 ug/L all year
002NaphthaleneDAILY MX report only all year
002Equipment inspection - visualVALUE report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Solids, total dissolvedDAILY MX report only all year
002BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
002Xylene [mix of m+o+p]DAILY MX report only all year
002Xylene [mix of m+o+p]DAILY MX report only all year
002Outfall 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