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Enterprise Products Operating LLC

Natural Gas Liquids, Carthage, Texas. NPDES permit TX0134080, in force until Jul 17, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 20 days after each period: form A monthly (5 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 1 value over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (5)

Parameter	Statistic	Limit	Months
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 8.5 SU	all year
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year
Solids, total dissolved	daily maximum	report only (mg/L)	all year

How strict are these limits?

pH, maximum 8.5 SU — stricter than 99% of 1,035 other minor industrial and other permits in Texas; 1% have the same limit

Cited limits by parameter: Texas's rules and the federal ones.

Same industry: the 30 Oil and Gas Extraction permits in Texas.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0134080 · MCP: https://passage-data.com/mcp