DOW CHEMICAL COMPANY, THE

NPDES permit TX0002933 · Major NON-POTW · expired 2024-10-15 · EPA's file as of 2026-09-26

Keep this permit as a site — opens New site at EPA's facility point (29.708888, -95.073333); you set the radius.

These are the last limits EPA's file holds for this permit, from an earlier version of it (version 0 in EPA's file): its current version carries none yet. Read your permit: a renewal can change them.

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

EPA's file shows no filings for this permit in this window. That is a statement about the file, not about the facility.

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among TX permits in EPA's filings — check your permit).

• Outfall 001, form A (PROCESS WASTEWATER - 001): every 1 month(s), 24 values
• Outfall 002, form A (STORMWATER - 002): every 1 month(s), 6 values
• Outfall 003, form A (STORMWATER - 003): every 1 month(s), 6 values
• Outfall 001, form Q (PROCESS WASTEWATER - 001): files for periods ending in Jan, Apr, Jul, Oct
• Outfall TX1, form Q (7-DAY CHRONIC MARINE - 001): files for periods ending in Mar, Jun, Dec
• Outfall TXA, form S (24-HOUR ACUTE MARINE - 001): files for periods ending in Jun, Dec

How strict are these limits?

Each concentration limit against the same limit in comparable permits. Where it appears more than once, its strictest value.

• Oil & Grease, daily maximum 15 mg/L — stricter than 33% of 156 other major industrial and other permits in Texas; 65% have the same limit
• Enterococci, daily maximum 104 CFU/100mL — stricter than 18% of 53 other major industrial and other permits in Texas; 60% have the same limit
• Enterococci, daily average 35 CFU/100mL — stricter than 11% of 52 other major industrial and other permits in Texas; 85% have the same limit
• pH, minimum at least 6 SU — stricter than 4% of 194 other major industrial and other permits in Texas; 92% have the same limit
• pH, maximum 9 SU — stricter than 4% of 194 other major industrial and other permits in Texas; 95% have the same limit
• Carbon, tot organic [TOC], daily maximum 125 mg/L — stricter than 0% of 70 other major industrial and other permits in Texas

Limits in force (64)

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