ENTERPRISE PRODUCTS OPERATING LLC

NPDES permit TX0134081 · Minor NON-POTW · expired 2024-10-31 · EPA's file as of 2026-09-26

Keep this permit as a site — opens New site at EPA's facility point (31.774722, -103.622222); you set the radius.

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.

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).

How strict are these limits?

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

1 other limit: fewer than 20 comparable permits.

Limits in force (36)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]monthly minimum >= 2 mg/L Jan, Feb, Jul, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]monthly minimum >= 2 mg/L Jan, Feb, Jul, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]monthly minimum >= 3 mg/L Mar, Apr, May, Jun
001Oxygen, dissolved [DO]monthly minimum >= 3 mg/L Mar, Apr, May, Jun
001Oxygen, dissolved [DO]MC <= 3 mg/L Jan, Feb, Jul, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]MC <= 3 mg/L Jan, Feb, Jul, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]MC <= 4 mg/L Mar, Apr, May, Jun
001Oxygen, dissolved [DO]MC <= 4 mg/L Mar, Apr, May, Jun
001pHminimum >= 6.5 SU all year
001pHminimum >= 6.5 SU all year
001pHmaximum <= 9 SU all year
001pHmaximum <= 9 SU all year
001Flow, in conduit or thru treatment plantmonthly average report only all year
001Flow, in conduit or thru treatment plantmonthly average report only all year
001Flow, in conduit or thru treatment plantdaily maximum report only all year
001Flow, in conduit or thru treatment plantdaily maximum report only all year
001Solids, total dissolvedmonthly average report only all year
001Solids, total dissolvedmonthly average report only all year
001Solids, total dissolveddaily maximum report only all year
001Solids, total dissolveddaily maximum report only all year
001Solids, total dissolvedmonthly average report only all year
001Solids, total dissolvedmonthly average report only all year
001Solids, total dissolveddaily maximum report only all year
001Solids, total dissolveddaily maximum report only all year
TX1Whole effluent toxicity - retest #1value report only all year
TX1Whole effluent toxicity - retest #2value report only all year
TX1WET, sublethal retest #1value report only all year
TX1WET, sublethal retest #2value report only all year
TX1Whole Effluent Toxicity - Retest #3value report only all year
TX1Whole Effluent Toxicity, Sub-Lethal Retest #3value report only all year
TX1Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexvalue report only all year
TX1LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasvalue report only all year
TX1NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexvalue report only all year
TX1NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasvalue report only all year
TX1Coef Of Var Static Renewal 48Hr Acute D. pulexvalue report only all year
TX1Coef Of Var Static Renewal 48Hr Acute Pimephales promelasvalue 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