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Enterprise Products Operating LLC

Industrial Organic Chemicals, major discharger, Baytown, Texas. NPDES permit TX0134465 expired Jul 7, 2026; its limits still apply. Last 12 months: over a limit 3 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (29 values), outfall 002 form A monthly (6 values), outfall 003 form A monthly (10 values), outfall 004 form A monthly (6 values), outfall 005 form A monthly (6 values), outfall 006 form A monthly (8 values), and 5 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 0 of 92 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
June 2026Zinc, total [as Zn], daily maximum.654 mg/L≤ .525 mg/L25%
August 2026Zinc, total [as Zn], daily average.445 mg/L≤ .248 mg/L79%
August 2026Zinc, total [as Zn], daily maximum.92 mg/L≤ .525 mg/L75%

Limits in force (231)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cdaily average≤ 15.3 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 36 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily average≤ 189 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 521 lb/dall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily average≤ 34.2 mg/Lall year001
Solids, total suspendeddaily maximum≤ 113 mg/Lall year001
Solids, total suspendeddaily average≤ 493 lb/dall year001
Solids, total suspendeddaily maximum≤ 1630 lb/dall year001
Oil & Greasedaily average≤ 15 mg/Lall year001
Oil & Greasedaily maximum≤ 20 mg/Lall year001
Nitrogen, ammonia total [as N]daily averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily averagereport only (lb/d)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (lb/d)all year001
Carbon, tot organic [TOC]daily average≤ 30 mg/Lall year001
Carbon, tot organic [TOC]daily maximum≤ 75 mg/Lall year001
Sulfate, total [as SO4]daily averagereport only (mg/L)all year001
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year001
Sulfate, total [as SO4]daily average≤ 3743 lb/dall year001
Sulfate, total [as SO4]daily maximum≤ 7903 lb/dall year001
Benzo[a]pyrenedaily average≤ .00444 ug/Lall year001
Benzo[a]pyrenedaily maximum≤ .00939 ug/Lall year001
Benzo[a]pyrenedaily average≤ .000064 lb/dall year001
Benzo[a]pyrenedaily maximum≤ .00014 lb/dall year001
Chrysenedaily average≤ 4.47 ug/Lall year001
Chrysenedaily maximum≤ 9.47 ug/Lall year001
Chrysenedaily average≤ .0643 lb/dall year001
Chrysenedaily maximum≤ .136 lb/dall year001
Hexachlorobutadienedaily average≤ .39 ug/Lall year001
Hexachlorobutadienedaily maximum≤ .827 ug/Lall year001
Hexachlorobutadienedaily average≤ .006 lb/dall year001
Hexachlorobutadienedaily maximum≤ .012 lb/dall year001
Hexachloroethanedaily average≤ 4.14 ug/Lall year001
Hexachloroethanedaily maximum≤ 8.75 ug/Lall year001
Hexachloroethanedaily average≤ .06 lb/dall year001
Hexachloroethanedaily maximum≤ .13 lb/dall year001
Benzo[a]anthracenedaily average≤ .0444 ug/Lall year001
Benzo[a]anthracenedaily maximum≤ .0939 ug/Lall year001
Benzo[a]anthracenedaily average≤ .00064 lb/dall year001
Benzo[a]anthracenedaily maximum≤ .0014 lb/dall year001
Di[2-ethylhexyl] phthalate [DEHP]daily average≤ 13.4 ug/Lall year001
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 28.3 ug/Lall year001
Di[2-ethylhexyl] phthalate [DEHP]daily average≤ .193 lb/dall year001
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ .407 lb/dall year001
Hexachlorobenzenedaily average≤ .0012 ug/Lall year001
Hexachlorobenzenedaily maximum≤ .00255 ug/Lall year001
Hexachlorobenzenedaily average≤ .000017 lb/dall year001
Hexachlorobenzenedaily maximum≤ .000037 lb/dall year001
Flow, in conduit or thru treatment plantdaily average≤ 1.725 MGDall year001
Flow, in conduit or thru treatment plantdaily maximum≤ 3.5 MGDall year001
Cyanide, free availabledaily maximumreport only (mg/L)all year001
Solids, total dissolveddaily averagereport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolveddaily average≤ 15705 lb/dall year001
Solids, total dissolveddaily maximum≤ 33224 lb/dall year001
pHminimum≥ 6.5 SUall year002
pHmaximum≤ 9 SUall year002
Oil & Greasedaily maximum≤ 15 mg/Lall year002
Carbon, tot organic [TOC]daily maximum≤ 75 mg/Lall year002
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
pHminimum≥ 6.5 SUall year003
pHmaximum≤ 9 SUall year003
Solids, total suspendeddaily average≤ 30 mg/Lall year003
Solids, total suspendeddaily maximum≤ 100 mg/Lall year003
Oil & Greasedaily average≤ 15 mg/Lall year003
Oil & Greasedaily maximum≤ 20 mg/Lall year003
Zinc, total [as Zn]daily average≤ .248 mg/Lall year003
Zinc, total [as Zn]daily maximum≤ .525 mg/Lall year003
Flow, in conduit or thru treatment plantdaily average≤ .346 MGDall year003
Flow, in conduit or thru treatment plantdaily maximum≤ .65 MGDall year003
pHminimum≥ 6.5 SUall year004
pHmaximum≤ 9 SUall year004
Oil & Greasedaily maximum≤ 15 mg/Lall year004
Carbon, tot organic [TOC]daily maximum≤ 75 mg/Lall year004
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
pHminimum≥ 6 SUall year005
pHmaximum≤ 9 SUall year005
Oil & Greasedaily maximum≤ 15 mg/Lall year005
Carbon, tot organic [TOC]daily maximum≤ 75 mg/Lall year005
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005
pHminimum≥ 6 SUall year006
pHmaximum≤ 9 SUall year006
Solids, total suspendeddaily average≤ 30 mg/Lall year006
Solids, total suspendeddaily maximum≤ 100 mg/Lall year006
Oil & Greasedaily average≤ 15 mg/Lall year006
Oil & Greasedaily maximum≤ 20 mg/Lall year006
Flow [dry weather]daily average≤ .072 MGDall year006
Flow [dry weather]daily maximum≤ .15 MGDall year006
BOD, 5-day, 20 deg. Cdaily average≤ 112 lb/dall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 302 lb/dall year101
Solids, total suspendeddaily average≤ 165 lb/dall year101
Solids, total suspendeddaily maximum≤ 536 lb/dall year101
Carbon tetrachloridedaily average≤ .059 lb/dall year101
Carbon tetrachloridedaily maximum≤ .124 lb/dall year101
1,2-Dichloroethanedaily average≤ .222 lb/dall year101
1,2-Dichloroethanedaily maximum≤ .69 lb/dall year101
Chloroformdaily average≤ .069 lb/dall year101
Chloroformdaily maximum≤ .15 lb/dall year101
Toluenedaily average≤ .085 lb/dall year101
Toluenedaily maximum≤ .262 lb/dall year101
Benzenedaily average≤ .121 lb/dall year101
Benzenedaily maximum≤ .445 lb/dall year101
Acenaphthylenedaily average≤ .072 lb/dall year101
Acenaphthylenedaily maximum≤ .193 lb/dall year101
Acenaphthenedaily average≤ .072 lb/dall year101
Acenaphthenedaily maximum≤ .193 lb/dall year101
Acrylonitriledaily average≤ .314 lb/dall year101
Acrylonitriledaily maximum≤ .792 lb/dall year101
Anthracenedaily average≤ .072 lb/dall year101
Anthracenedaily maximum≤ .193 lb/dall year101
Benzo[k]fluoranthenedaily average≤ .072 lb/dall year101
Benzo[k]fluoranthenedaily maximum≤ .193 lb/dall year101
Chlorobenzenedaily average≤ .049 lb/dall year101
Chlorobenzenedaily maximum≤ .092 lb/dall year101
Diethyl phthalatedaily average≤ .265 lb/dall year101
Diethyl phthalatedaily maximum≤ .664 lb/dall year101
Dimethyl phthalatedaily average≤ .062 lb/dall year101
Dimethyl phthalatedaily maximum≤ .154 lb/dall year101
Ethylbenzenedaily average≤ .105 lb/dall year101
Ethylbenzenedaily maximum≤ .353 lb/dall year101
Fluoranthenedaily average≤ .082 lb/dall year101
Fluoranthenedaily maximum≤ .222 lb/dall year101
Fluorenedaily average≤ .072 lb/dall year101
Fluorenedaily maximum≤ .193 lb/dall year101
Methyl chloride [Chloromethane]daily average≤ .281 lb/dall year101
Methyl chloride [Chloromethane]daily maximum≤ .622 lb/dall year101
Methylene chloridedaily average≤ .131 lb/dall year101
Methylene chloridedaily maximum≤ .291 lb/dall year101
Nitrobenzenedaily average≤ .088 lb/dall year101
Nitrobenzenedaily maximum≤ .222 lb/dall year101
Phenanthrenedaily average≤ .072 lb/dall year101
Phenanthrenedaily maximum≤ .193 lb/dall year101
Pyrenedaily average≤ .082 lb/dall year101
Pyrenedaily maximum≤ .219 lb/dall year101
Tetrachloroethylenedaily average≤ .072 lb/dall year101
Tetrachloroethylenedaily maximum≤ .183 lb/dall year101
1,1-Dichloroethanedaily average≤ .072 lb/dall year101
1,1-Dichloroethanedaily maximum≤ .193 lb/dall year101
1,1-Dichloroethylenedaily average≤ .052 lb/dall year101
1,1-Dichloroethylenedaily maximum≤ .082 lb/dall year101
1,1,1-Trichloroethanedaily average≤ .069 lb/dall year101
1,1,1-Trichloroethanedaily maximum≤ .177 lb/dall year101
1,1,2-Trichloroethanedaily average≤ .069 lb/dall year101
1,1,2-Trichloroethanedaily maximum≤ .177 lb/dall year101
1,2-Dichlorobenzenedaily average≤ .252 lb/dall year101
1,2-Dichlorobenzenedaily maximum≤ .533 lb/dall year101
1,2-Dichloropropanedaily average≤ .5 lb/dall year101
1,2-Dichloropropanedaily maximum≤ .752 lb/dall year101
trans-1,2-Dichloroethylenedaily average≤ .069 lb/dall year101
trans-1,2-Dichloroethylenedaily maximum≤ .177 lb/dall year101
1,2,4-Trichlorobenzenedaily average≤ .222 lb/dall year101
1,2,4-Trichlorobenzenedaily maximum≤ .458 lb/dall year101
1,3-Dichlorobenzenedaily average≤ .101 lb/dall year101
1,3-Dichlorobenzenedaily maximum≤ .144 lb/dall year101
1,4-Dichlorobenzenedaily average≤ .049 lb/dall year101
1,4-Dichlorobenzenedaily maximum≤ .092 lb/dall year101
2-Chlorophenoldaily average≤ .101 lb/dall year101
2-Chlorophenoldaily maximum≤ .321 lb/dall year101
2-Nitrophenoldaily average≤ .134 lb/dall year101
2-Nitrophenoldaily maximum≤ .226 lb/dall year101
2,4-Dichlorophenoldaily average≤ .128 lb/dall year101
2,4-Dichlorophenoldaily maximum≤ .366 lb/dall year101
2,4-Dimethylphenoldaily average≤ .059 lb/dall year101
2,4-Dimethylphenoldaily maximum≤ .118 lb/dall year101
2,4-Dinitrotoluenedaily average≤ .37 lb/dall year101
2,4-Dinitrotoluenedaily maximum≤ .932 lb/dall year101
2,4-Dinitrophenoldaily average≤ .232 lb/dall year101
2,4-Dinitrophenoldaily maximum≤ .402 lb/dall year101
2,6-Dinitrotoluenedaily average≤ .834 lb/dall year101
2,6-Dinitrotoluenedaily maximum≤ 2.097 lb/dall year101
4-Nitrophenoldaily average≤ .236 lb/dall year101
4-Nitrophenoldaily maximum≤ .406 lb/dall year101
4,6-Dinitro-o-cresoldaily average≤ .255 lb/dall year101
4,6-Dinitro-o-cresoldaily maximum≤ .906 lb/dall year101
Phenoldaily average≤ .049 lb/dall year101
Phenoldaily maximum≤ .085 lb/dall year101
Naphthalenedaily average≤ .072 lb/dall year101
Naphthalenedaily maximum≤ .193 lb/dall year101
Di-n-butyl phthalatedaily average≤ .088 lb/dall year101
Di-n-butyl phthalatedaily maximum≤ .186 lb/dall year101
Vinyl chloridedaily average≤ .34 lb/dall year101
Vinyl chloridedaily maximum≤ .877 lb/dall year101
Trichloroethylenedaily average≤ .069 lb/dall year101
Trichloroethylenedaily maximum≤ .177 lb/dall year101
Flow, in conduit or thru treatment plantdaily average≤ .415 MGDall year101
Flow, in conduit or thru treatment plantdaily maximum≤ .7 MGDall year101
1,3-Dichloropropylenedaily average≤ .095 lb/dall year101
1,3-Dichloropropylenedaily maximum≤ .144 lb/dall year101
3,4-Benzofluoranthenedaily average≤ .075 lb/dall year101
3,4-Benzofluoranthenedaily maximum≤ .2 lb/dall year101
Chloroethanedaily average≤ .34 lb/dall year101
Chloroethanedaily maximum≤ .877 lb/dall year101
Whole Effluent Toxicity [WET] - C. dubia7-day minimum≥ 87 %all yearTX1
Whole Effluent Toxicity [WET] - C. dubiamonthly average minimum≥ 87 %all yearTX1
Whole Effluent Toxicity [WET] - C. dubia7-day minimum≥ 80 %all yearTX1
Whole Effluent Toxicity [WET] - C. dubiamonthly average minimum≥ 80 %all yearTX1
Whole Effluent Toxicity [WET] - P. promelas7-day minimum≥ 87 %all yearTX1
Whole Effluent Toxicity [WET] - P. promelasmonthly average minimum≥ 87 %all yearTX1
Whole Effluent Toxicity [WET] - P. promelas7-day minimum≥ 80 %all yearTX1
Whole Effluent Toxicity [WET] - P. promelasmonthly average minimum≥ 80 %all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day averagereport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
LC50 Pass/Fail Static 24Hr Acute D. Pulexsingle samplereport only (pass=0;fail=1)all yearTXA
LC50 Pass/Fail Static 24Hr Acute Pimephales promelassingle samplereport only (pass=0;fail=1)all yearTXA

How strict are these limits?

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

Same industry: the 165 Chemicals and Allied Products 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/TX0134465 · MCP: https://passage-data.com/mcp