NPDES TX0004944 · Clean Water Act
AIR PRODUCTS LA PORTE PLANT, La Porte, TX: NPDES TX0004944 discharge permit, effluent exceedances, inspections, penalties
AIR PRODUCTS LA PORTE PLANT, La Porte, Texas: Individual permit TX0004944, held by AIR PRODUCTS LLC; Administratively continued; issued July 12, 2018, term to July 12, 2023; discharges to DRAINAGE DITCH;HCFCD F103-00-00;SAN JACINTO BAY.
2 of the 23 pollutants listed for NPDES TX0004944 have no violation or effluent exceedance.
- Copper, total [as Cu]: 4 limits, 45 violations of any kind, 41 effluent exceedances, latest May 31, 2025, largest 2,150% over the limit.
- Oxygen demand, chem. [high level] [COD]: 6 limits, 28 violations of any kind, 13 effluent exceedances, latest November 30, 2025, largest 329% over the limit.
- pH: 10 limits, 31 violations of any kind, 7 effluent exceedances, latest May 31, 2025.
- Oil & Grease: 6 limits, 16 violations of any kind, 4 effluent exceedances, latest April 30, 2024, largest 111% over the limit.
- Solids, total suspended: 2 limits, 5 violations of any kind, 3 effluent exceedances, latest November 30, 2021, largest 34% over the limit.
- Zinc, total [as Zn]: 4 limits, 7 violations of any kind, 1 effluent exceedance, latest April 30, 2024, largest 42% over the limit.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia: 4 limits, 12 violations of any kind.
- NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia: 4 limits, 12 violations of any kind.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia: 4 limits, 12 violations of any kind.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia: 4 limits, 12 violations of any kind.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia: 4 limits, 12 violations of any kind.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia: 4 limits, 12 violations of any kind.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia): 4 limits, 9 violations of any kind.
- NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 4 limits, 9 violations of any kind.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 4 limits, 9 violations of any kind.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 4 limits, 7 violations of any kind.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 4 limits, 7 violations of any kind.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia): 4 limits, 7 violations of any kind.
- LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia): 1 limit, 3 violations of any kind.
- LC50 Pass/Fail Static 24Hr Acute Menidia menidia: 1 limit, 3 violations of any kind.
- Flow, in conduit or thru treatment plant: 2 limits, 2 violations of any kind.
- Whole effluent toxicity - retest #1: 7 limits.
- Whole effluent toxicity - retest #2: 7 limits.
- January 13, 2026: No Further Action (State).
- June 9, 2022: Permit Violations - Violation Specified in Comment (ST6).
- February 16, 2022: Permit Violations - Violation Specified in Comment (ST6).
Other permits held by AIR PRODUCTS LLC
- BATTLEGROUND ROAD FACILITY, La Porte: TX0077585, issued 2008-05-08
AIR PRODUCTS LA PORTE PLANT among its neighbors
112 discharge permits are in the Goose Creek-Frontal Galveston Bay subwatershed (HUC 120401040706); TX0004944 is one. Its county: 4,455, 195 major; TX0004944 is minor permit.
Other permits in the Goose Creek-Frontal Galveston Bay subwatershed (HUC 120401040706)
- AIR LIQUIDE BAYTOWN ASU FACILITY, Baytown: TXR1583VZ, minor, term to 2028-03-04
- AIR PRODUCTS LA PORTE PLANT, La Porte: TXR1595PW, minor, term to 2028-03-04
- AIRGAS DRY ICE FACILITY, La Porte: TX0136638, minor, term to 2024-03-31
- BARBOURS CUT TERMINAL, La Porte: TXR05GM41, minor, term to 2026-08-13
- BATTLEGROUND CHLOR ALKALI PLANT, La Porte: TX0008150, major, term to 2020-07-01
- BATTLEGROUND ROAD FACILITY, La Porte: TX0077585, minor, term to 2013-05-01
- BAYTOWN ACE INDUSTRIAL SERVICES, Baytown: TXR05FO27, minor, term to 2026-08-13
- BAYTOWN CENTRAL, Baytown: TXR1557NT, minor, term to 2028-03-04
- BAYTOWN FIRE STATION NO 2, Baytown: TXR1552XS, minor, term to 2028-03-04
- BAYTOWN HMP, Baytown: TXR05GY27, minor, term to 2026-08-13
Identity
| Facility | AIR PRODUCTS LA PORTE PLANT |
|---|---|
| Permittee | AIR PRODUCTS LLC |
| NPDES ID | TX0004944 |
| Status | Administratively continued |
| Type | Individual permit |
| Class | Minor |
| Facility type | Non-POTW |
| Issued | July 12, 2018 |
| Expires | July 12, 2023 |
| Address | La Porte, TX 77571 |
| Receiving water | DRAINAGE DITCH;HCFCD F103-00-00;SAN JACINTO BAY |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Goose Creek-Frontal Galveston Bay (HUC 120401040706) |
| SIC | 2813 – Industrial Gases |
| Other EPA IDs (FRS) | RCRA handler TXD059331637; ICIS-AIR source TX0000004820100282 |
NPDES TX0004944: effluent limits and exceedances
AIR PRODUCTS LA PORTE PLANT (NPDES TX0004944): 23 pollutants on file, 23 limited; 21 with a violation of any kind, 6 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| Copper, total [as Cu] | 4 | 45 | 41 | May 31, 2025 | 2,150% over the limit |
| Oxygen demand, chem. [high level] [COD] | 6 | 28 | 13 | November 30, 2025 | 329% over the limit |
| pH | 10 | 31 | 7 | May 31, 2025 | |
| Oil & Grease | 6 | 16 | 4 | April 30, 2024 | 111% over the limit |
| Solids, total suspended | 2 | 5 | 3 | November 30, 2021 | 34% over the limit |
| Zinc, total [as Zn] | 4 | 7 | 1 | April 30, 2024 | 42% over the limit |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 4 | 12 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 4 | 12 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 4 | 12 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 4 | 12 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 4 | 12 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 4 | 12 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 4 | 9 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 4 | 9 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 4 | 9 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 4 | 7 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 4 | 7 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 4 | 7 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 1 | 3 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Menidia menidia | 1 | 3 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Whole effluent toxicity - retest #1 | 7 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 7 | 0 | 0 |
NPDES TX0004944: inspections, violations and enforcement
NPDES TX0004944: 2 single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 9, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| February 16, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
NPDES TX0004944: 1 informal enforcement action
| Date | What EPA recorded | Agency |
|---|---|---|
| January 13, 2026 | No Further Action | State |
NPDES TX0004944 (AIR PRODUCTS LA PORTE PLANT): no inspection and formal enforcement action on file.
Watch NPDES TX0004944
NPDES TX0004944: one email when its EPA record changes — $99/month.
Permits near NPDES TX0004944
NPDES TX0004944: 23 pollutant rows, 3 dated events; ICIS-NPDES download, loaded October 14, 2026.