THE DOW CHEMICAL COMPANY

NPDES permit TX0146391 · Minor NON-POTW · effective, expires 2030-08-19 · 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)
1of 12 forms filed late

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

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (11)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001BenzeneDAILY AV <= .37 mg/L all year
001BenzeneDAILY MX <= .136 mg/L all year
001ChlorobenzeneDAILY AV <= .015 mg/L all year
001ChlorobenzeneDAILY MX <= .028 mg/L all year
001Flow, in conduit or thru treatment plantDAILY AV report only all year
001Flow, in conduit or thru treatment plantDAILY MX <= .08 MGD all year
001AnilineDAILY MX <= .16 mg/L all year
001TrichloroetheneDAILY AV <= .021 mg/L all year
001TrichloroetheneDAILY MX <= .054 mg/L 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