Clean Water Act discharge permit · NPDES TX0102326
ENTERPRISE MONT BELVIEU FM 1942 COMPLEX, Mont Belvieu, TX: NPDES TX0102326 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 100Pollutants under a numeric limit
- 24Pollutants with an effluent exceedance
- 1Inspections on file
- 0Formal enforcement actions
ENTERPRISE MONT BELVIEU FM 1942 COMPLEX, held by ENTERPRISE PRODUCTS OPERATING, holds NPDES permit TX0102326, which discharges to Unnamed Trib Of Cedar Bayou, Cedar. EPA’s file records it issued January 9, 2014 and expiring August 1, 2018.
ENTERPRISE MONT BELVIEU FM 1942 COMPLEX, Mont Belvieu, Texas: Individual permit TX0102326, held by ENTERPRISE PRODUCTS OPERATING; Administratively continued (past its expiration date and still in force until reissued); issued January 9, 2014, term to August 1, 2018; discharges to UNNAMED TRIB OF CEDAR BAYOU, CEDAR.
- Solids, total suspended: 8 limits, 86 violations of any kind, 50 effluent exceedances, latest February 29, 2024, largest 151% over the limit.
- Copper, total [as Cu]: 8 limits, 107 violations of any kind, 43 effluent exceedances, latest September 30, 2019, largest 416% over the limit.
- pH: 14 limits, 83 violations of any kind, 38 effluent exceedances, latest May 31, 2023.
- Carbon, tot organic [TOC]: 9 limits, 71 violations of any kind, 30 effluent exceedances, latest September 30, 2023, largest 10,923% over the limit.
- Flow, in conduit or thru treatment plant: 14 limits, 67 violations of any kind, 21 effluent exceedances, latest September 30, 2019, largest 44% over the limit.
- pH range excursions, > 60 minutes: 2 limits, 20 violations of any kind, 17 effluent exceedances, latest June 30, 2021, largest 2,147,483,650% over the limit.
- Oil & Grease: 7 limits, 48 violations of any kind, 16 effluent exceedances, latest March 31, 2024, largest 760% over the limit.
- Zinc, total [as Zn]: 4 limits, 47 violations of any kind, 15 effluent exceedances, latest July 31, 2019, largest 2,348% over the limit.
- Aluminum, total [as Al]: 8 limits, 29 violations of any kind, 7 effluent exceedances, latest September 30, 2019, largest 269% over the limit.
- Chloroform: 4 limits, 16 violations of any kind, 6 effluent exceedances, latest August 31, 2022, largest 763% over the limit.
- BOD, 5-day, 20 deg. C: 4 limits, 14 violations of any kind, 4 effluent exceedances, latest March 31, 2024, largest 318% over the limit.
- pH range excursions, monthly total accum: 2 limits, 7 violations of any kind, 4 effluent exceedances, latest September 30, 2018, largest 693% over the limit.
- Hexachlorobutadiene: 4 limits, 16 violations of any kind, 2 effluent exceedances, latest August 31, 2011, largest 314% over the limit.
- Hexachloroethane: 4 limits, 16 violations of any kind, 2 effluent exceedances, latest August 31, 2011, largest 67% over the limit.
- 2-Nitrophenol: 4 limits, 16 violations of any kind, 2 effluent exceedances, latest August 31, 2011, largest 103% over the limit.
- Sulfide, total [as S]: 2 limits, 14 violations of any kind, 2 effluent exceedances, latest March 31, 2005, largest 2,433% over the limit.
- Hexachlorobenzene: 8 limits, 19 violations of any kind, 1 effluent exceedance, latest August 31, 2011, largest 14% over the limit.
- 1,4-Dichlorobenzene: 4 limits, 15 violations of any kind, 1 effluent exceedance, latest August 31, 2011, largest 14% over the limit.
- 2,4-Dinitrophenol: 4 limits, 15 violations of any kind, 1 effluent exceedance, latest August 31, 2011, largest 18% over the limit.
- 4-Nitrophenol: 4 limits, 15 violations of any kind, 1 effluent exceedance, latest August 31, 2011, largest 15% over the limit.
- 4,6-Dinitro-o-cresol: 4 limits, 15 violations of any kind, 1 effluent exceedance, latest August 31, 2011, largest 7% over the limit.
- Phenol: 4 limits, 15 violations of any kind, 1 effluent exceedance, latest August 31, 2011, largest 14% over the limit.
- 1,3-Dichloropropylene: 4 limits, 11 violations of any kind, 1 effluent exceedance, latest August 31, 2011, largest 48% over the limit.
- Cyanide, free available: 8 limits, 3 violations of any kind, 1 effluent exceedance, latest February 28, 2023, largest 5% over the limit.
- NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 8 limits, 48 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 8 limits, 48 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia): 8 limits, 46 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia: 8 limits, 36 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia: 8 limits, 36 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia: 8 limits, 36 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia): 8 limits, 21 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 8 limits, 20 violations of any kind, 0 effluent exceedances.
- Benzo[a]pyrene: 8 limits, 18 violations of any kind, 0 effluent exceedances.
- Benzo[a]anthracene: 8 limits, 18 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 8 limits, 18 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia: 8 limits, 17 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia: 8 limits, 16 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia: 8 limits, 16 violations of any kind, 0 effluent exceedances.
- Phenanthrene: 6 limits, 16 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia): 2 limits, 16 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Menidia menidia: 2 limits, 16 violations of any kind, 0 effluent exceedances.
- Acenaphthylene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- Acenaphthene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- Anthracene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- Benzo[k]fluoranthene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- Chrysene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- Diethyl phthalate: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- Dimethyl phthalate: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- Fluoranthene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- Fluorene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- Nitrobenzene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- Pyrene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- 1,2-Dichlorobenzene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- 1,2,4-Trichlorobenzene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- 1,3-Dichlorobenzene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- 2-Chlorophenol: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- 2,4-Dichlorophenol: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- 2,4-Dimethylphenol: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- 2,4-Dinitrotoluene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- 2,6-Dinitrotoluene: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- June 9, 2026: Evaluation (S).
- February 13, 2017: Permit Violations - Violation Specified in Comment (ST6).
ENTERPRISE MONT BELVIEU FM 1942 COMPLEX among its neighbors
EPA’s permit file holds 67 discharge permits in the Ellis Branch-Cedar Bayou subwatershed (HUC 120402030105), TX0102326 among them. Its county holds 197, 10 of them major permits; TX0102326 is a major permit.
Other permits in the Ellis Branch-Cedar Bayou subwatershed (HUC 120402030105)
- ARCANUM BAYTOWN SITE, Baytown: TX0003832, minor permit, discharging to CEDAR BAYOU TIDAL, permit term to October 4, 2023
- ARCANUM BAYTOWN SITE, Baytown: TXR05GX94, minor permit, permit term to August 13, 2026
- ARCANUM BAYTOWN SITE, Baytown: TXR05HB19, minor permit, permit term to August 13, 2026
- ARCANUM BAYTOWN SITE, Baytown: TXR05HC83, minor permit, permit term to August 13, 2031
- ARCANUM PROJECT ROBIN, Baytown: TXR1547NZ, minor permit, discharging to CEDAR BAYOU, permit term to March 4, 2028
- BAY CREEK, Baytown: TXR1524YP, minor permit, discharging to ELLIS BRANCH, permit term to March 4, 2028
- BAY CREEK, Baytown: TXR1586RH, minor permit, discharging to CEDAR BAYOU ABOVE TIDAL, permit term to March 4, 2028
- BAY CREEK SEC ONE - DETENTION CLEARING GRUBBING GRADING, Baytown: TXR1548MV, minor permit, discharging to UNNAMED CREEK THENCE ELLIS BRANCH, permit term to March 4, 2028
- BAY CREEK SECTION 1, Baytown: TXR1550OL, minor permit, discharging to TABBS BAY, permit term to March 4, 2028
- BAYTOWN COMMERCE CENTER - BUILDING 1, Baytown: TXR1557JI, minor permit, discharging to CEDAR BAYOU, permit term to March 4, 2023
Identity
| Facility as filed | ENTERPRISE MONT BELVIEU FM 1942 COMPLEX |
|---|---|
| Permittee as filed | ENTERPRISE PRODUCTS OPERATING |
| NPDES ID | TX0102326 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | January 9, 2014 |
| Expiration date | August 1, 2018 |
| Address | Mont Belvieu, TX 77523 |
| Receiving water | UNNAMED TRIB OF CEDAR BAYOU, CEDAR |
| Subwatershed | Ellis Branch-Cedar Bayou (HUC 120402030105) |
| Other EPA IDs (FRS) | RCRA handler TXT490013455; ICIS-AIR source TX0000004807100007 |
Effluent limits and exceedances
- 100Pollutants on file
- 100Under a numeric limit
- 89With a violation of any kind
- 24With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant; the 60 with the most exceedances of 100 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total suspended | 8 | 86 | 50 | February 29, 2024 | 151% over the limit |
| Copper, total [as Cu] | 8 | 107 | 43 | September 30, 2019 | 416% over the limit |
| pH | 14 | 83 | 38 | May 31, 2023 | |
| Carbon, tot organic [TOC] | 9 | 71 | 30 | September 30, 2023 | 10,923% over the limit |
| Flow, in conduit or thru treatment plant | 14 | 67 | 21 | September 30, 2019 | 44% over the limit |
| pH range excursions, > 60 minutes | 2 | 20 | 17 | June 30, 2021 | 2,147,483,650% over the limit |
| Oil & Grease | 7 | 48 | 16 | March 31, 2024 | 760% over the limit |
| Zinc, total [as Zn] | 4 | 47 | 15 | July 31, 2019 | 2,348% over the limit |
| Aluminum, total [as Al] | 8 | 29 | 7 | September 30, 2019 | 269% over the limit |
| Chloroform | 4 | 16 | 6 | August 31, 2022 | 763% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 14 | 4 | March 31, 2024 | 318% over the limit |
| pH range excursions, monthly total accum | 2 | 7 | 4 | September 30, 2018 | 693% over the limit |
| Hexachlorobutadiene | 4 | 16 | 2 | August 31, 2011 | 314% over the limit |
| Hexachloroethane | 4 | 16 | 2 | August 31, 2011 | 67% over the limit |
| 2-Nitrophenol | 4 | 16 | 2 | August 31, 2011 | 103% over the limit |
| Sulfide, total [as S] | 2 | 14 | 2 | March 31, 2005 | 2,433% over the limit |
| Hexachlorobenzene | 8 | 19 | 1 | August 31, 2011 | 14% over the limit |
| 1,4-Dichlorobenzene | 4 | 15 | 1 | August 31, 2011 | 14% over the limit |
| 2,4-Dinitrophenol | 4 | 15 | 1 | August 31, 2011 | 18% over the limit |
| 4-Nitrophenol | 4 | 15 | 1 | August 31, 2011 | 15% over the limit |
| 4,6-Dinitro-o-cresol | 4 | 15 | 1 | August 31, 2011 | 7% over the limit |
| Phenol | 4 | 15 | 1 | August 31, 2011 | 14% over the limit |
| 1,3-Dichloropropylene | 4 | 11 | 1 | August 31, 2011 | 48% over the limit |
| Cyanide, free available | 8 | 3 | 1 | February 28, 2023 | 5% over the limit |
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 8 | 48 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 8 | 48 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 8 | 46 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 8 | 36 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 8 | 36 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 8 | 36 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 8 | 21 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 8 | 20 | 0 | ||
| Benzo[a]pyrene | 8 | 18 | 0 | ||
| Benzo[a]anthracene | 8 | 18 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 8 | 18 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 8 | 17 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 8 | 16 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 8 | 16 | 0 | ||
| Phenanthrene | 6 | 16 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 2 | 16 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Menidia menidia | 2 | 16 | 0 | ||
| Acenaphthylene | 4 | 14 | 0 | ||
| Acenaphthene | 4 | 14 | 0 | ||
| Anthracene | 4 | 14 | 0 | ||
| Benzo[k]fluoranthene | 4 | 14 | 0 | ||
| Chrysene | 4 | 14 | 0 | ||
| Diethyl phthalate | 4 | 14 | 0 | ||
| Dimethyl phthalate | 4 | 14 | 0 | ||
| Fluoranthene | 4 | 14 | 0 | ||
| Fluorene | 4 | 14 | 0 | ||
| Nitrobenzene | 4 | 14 | 0 | ||
| Pyrene | 4 | 14 | 0 | ||
| 1,2-Dichlorobenzene | 4 | 14 | 0 | ||
| 1,2,4-Trichlorobenzene | 4 | 14 | 0 | ||
| 1,3-Dichlorobenzene | 4 | 14 | 0 | ||
| 2-Chlorophenol | 4 | 14 | 0 | ||
| 2,4-Dichlorophenol | 4 | 14 | 0 | ||
| 2,4-Dimethylphenol | 4 | 14 | 0 | ||
| 2,4-Dinitrotoluene | 4 | 14 | 0 | ||
| 2,6-Dinitrotoluene | 4 | 14 | 0 |
Inspections, violations and enforcement
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 13, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| June 9, 2026 | Evaluation | S |
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES TX0102326.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.