Enterprise Products Operating LLC — NPDES permit TX0131768: limits, due date and EPA's record

Industrial Organic Chemicals, Pasadena, Texas. NPDES permit TX0131768, in force until Jan 19, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (64)

Parameter	Statistic	Limit	Months
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	daily average	≤ 30 mg/L	all year
Solids, total suspended	daily maximum	≤ 100 mg/L	all year
Oil & Grease	daily average	≤ 15 mg/L	all year
Oil & Grease	daily maximum	≤ 20 mg/L	all year
Carbon, tot organic [TOC]	daily maximum	≤ 75 mg/L	all year
Carbon tetrachloride	daily maximum	≤ .38 mg/L	all year
1,2-Dichloroethane	daily maximum	≤ .574 mg/L	all year
Chloroform	daily maximum	≤ .325 mg/L	all year
Toluene	daily maximum	≤ .074 mg/L	all year
Benzene	daily maximum	≤ .134 mg/L	all year
Acenaphthylene	daily maximum	≤ .047 mg/L	all year
Acenaphthene	daily maximum	≤ .047 mg/L	all year
Acrylonitrile	daily maximum	≤ .232 mg/L	all year
Anthracene	daily maximum	≤ .047 mg/L	all year
Benzo[k]fluoranthene	daily maximum	≤ .047 mg/L	all year
Benzo[a]pyrene	daily maximum	≤ .00018 mg/L	all year
Chlorobenzene	daily maximum	≤ .38 mg/L	all year
Chrysene	daily maximum	≤ .047 mg/L	all year
Diethyl phthalate	daily maximum	≤ .133 mg/L	all year
Dimethyl phthalate	daily maximum	≤ .047 mg/L	all year
Ethylbenzene	daily maximum	≤ .38 mg/L	all year
Fluoranthene	daily maximum	≤ .054 mg/L	all year
Fluorene	daily maximum	≤ .047 mg/L	all year
Hexachlorobutadiene	daily maximum	≤ .016 mg/L	all year
Hexachloroethane	daily maximum	≤ .168 mg/L	all year
Methyl chloride [Chloromethane]	daily maximum	≤ .295 mg/L	all year
Methylene chloride	daily maximum	≤ .17 mg/L	all year
Nitrobenzene	daily maximum	≤ 6.402 mg/L	all year
Phenanthrene	daily maximum	≤ .025 mg/L	all year
Pyrene	daily maximum	≤ .048 mg/L	all year
Tetrachloroethylene	daily maximum	≤ .164 mg/L	all year
1,1-Dichloroethane	daily maximum	≤ .059 mg/L	all year
1,1-Dichloroethylene	daily maximum	≤ .06 mg/L	all year
1,1,1-Trichloroethane	daily maximum	≤ .059 mg/L	all year
1,1,2-Trichloroethane	daily maximum	≤ .127 mg/L	all year
Benzo[a]anthracene	daily maximum	≤ .0018 mg/L	all year
1,2-Dichlorobenzene	daily maximum	≤ .794 mg/L	all year
1,2-Dichloropropane	daily maximum	≤ .794 mg/L	all year
trans-1,2-Dichloroethylene	daily maximum	≤ .066 mg/L	all year
1,2,4-Trichlorobenzene	daily maximum	≤ .794 mg/L	all year
1,3-Dichlorobenzene	daily maximum	≤ .38 mg/L	all year
1,4-Dichlorobenzene	daily maximum	≤ .38 mg/L	all year
2-Nitrophenol	daily maximum	≤ .231 mg/L	all year
2,4-Dimethylphenol	daily maximum	≤ .047 mg/L	all year
2,4-Dinitrophenol	daily maximum	≤ 4.291 mg/L	all year
4-Nitrophenol	daily maximum	≤ .576 mg/L	all year
4,6-Dinitro-o-cresol	daily maximum	≤ .277 mg/L	all year
Phenol	daily maximum	≤ .047 mg/L	all year
Naphthalene	daily maximum	≤ .047 mg/L	all year
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ .258 mg/L	all year
Di-n-butyl phthalate	daily maximum	≤ .043 mg/L	all year
Vinyl chloride	daily maximum	≤ .172 mg/L	all year
Trichloroethylene	daily maximum	≤ .069 mg/L	all year
Hexachlorobenzene	daily maximum	≤ .00005 mg/L	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
Chlorine, total residual	daily maximum	≤ .1 mg/L	all year
1,3-Dichloropropylene	daily maximum	≤ .794 mg/L	all year
Flow [dry weather]	daily average	≤ .068 MGD	all year
Flow [dry weather]	daily maximum	≤ .19 MGD	all year
3,4-Benzofluoranthene	daily maximum	≤ .048 mg/L	all year
Chloroethane	daily maximum	≤ .295 mg/L	all year

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/TX0131768 · MCP: https://passage-data.com/mcp