Clean Water Act discharge permit · NPDES TX0022926
MAIN PLANT, Groves, TX: NPDES TX0022926 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 53Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
- 1Inspections on file
- 1Formal enforcement actions
MAIN PLANT, held by PORT NECHES,CITY OF, holds NPDES permit TX0022926, which discharges to Neches River Tidal. EPA’s file records it issued November 26, 2018 and expiring November 26, 2023.
MAIN PLANT, Groves, Texas: Individual permit TX0022926, held by PORT NECHES,CITY OF; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued November 26, 2018, term to November 26, 2023; discharges to NECHES RIVER TIDAL.
- BOD, 5-day, 20 deg. C: 3 limits, 181 violations of any kind, 118 effluent exceedances, latest July 31, 2026, largest 245% over the limit.
- Solids, total suspended: 3 limits, 169 violations of any kind, 108 effluent exceedances, latest July 31, 2026, largest 189% over the limit.
- Flow, in conduit or thru treatment plant: 4 limits, 101 violations of any kind, 65 effluent exceedances, latest July 31, 2026, largest 34% over the limit.
- Enterococci: 2 limits, 69 violations of any kind, 55 effluent exceedances, latest July 31, 2026, largest 5,086% over the limit.
- pH: 3 limits, 13 violations of any kind, 1 effluent exceedance, latest June 30, 2002.
- Chlorine, total residual: 2 limits, 9 violations of any kind, 1 effluent exceedance, latest April 30, 2006, largest 1% over the limit.
- NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 2 limits, 12 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia: 2 limits, 12 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 2 limits, 12 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia: 2 limits, 12 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia): 2 limits, 10 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia: 2 limits, 10 violations of any kind, 0 effluent exceedances.
- Annual amount of sludge land applied: 1 limit, 7 violations of any kind, 0 effluent exceedances.
- Annual amt. sludge disposed surface unit: 1 limit, 7 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia): 1 limit, 7 violations of any kind, 0 effluent exceedances.
- Ann. amt sludge disposed by other method: 1 limit, 6 violations of any kind, 0 effluent exceedances.
- Annual amt of sludge incinerated: 1 limit, 6 violations of any kind, 0 effluent exceedances.
- Annual amt sludge transported interstate: 1 limit, 6 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Menidia menidia: 1 limit, 6 violations of any kind, 0 effluent exceedances.
- Arsenic, dry weight: 5 limits, 5 violations of any kind, 0 effluent exceedances.
- Chromium, sludge, total, dry weight [as Cr]: 5 limits, 5 violations of any kind, 0 effluent exceedances.
- Compliance w/part 258 sludge requirement: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Mercury, sludge, total, dry weight [as Hg]: 3 limits, 4 violations of any kind, 0 effluent exceedances.
- Oxygen, dissolved [DO]: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Selenium, dry weight: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Copper, dry weight: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Cadmium, dry weight: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Molybdenum, sludge, total, dry weight [as Mo]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Zinc, sludge, total, dry weight [as Zn]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Lead, sludge, total, dry weight [as Pb]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Nickel, sludge, total, dry weight [as Ni]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Vector attraction reduction alternative used: 2 limits, 3 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Level of pathogen requirements achieved: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Description of pathogen option used: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 2 limits, 2 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia): 2 limits, 2 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Polychlorinated biphenyls [PCBs]: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Toxicity characteristic leaching procedure: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual sludge production, total: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt sludge disposed in landfill: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Fecal coliform: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Unit w/liner/leachate collection system: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Boundary areas: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Salmonella: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Pollutant table from 503.13: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #1: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #2: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Annual whole sludge application rate: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- September 29, 2026: Permit Violations - Violation Specified in Comment (ST6).
- September 29, 2026: Focused (S).
- April 22, 2026: State CWA Penalty AO (State), $240,000 state or local penalty.
- February 24, 2026: Under Review (State).
- January 20, 2026: Under Review (State).
- September 22, 2025: Permit Violations - Violation Specified in Comment (ST6).
- April 25, 2025: Permit Violations - Violation Specified in Comment (ST6).
- November 2, 2023: Permit Violations - Violation Specified in Comment (ST6).
- December 8, 2021: Permit Violations - Violation Specified in Comment (ST6).
- May 17, 2018: Permit Violations - Violation Specified in Comment (ST6).
Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 949 were issued before TX0022926.
Coverages issued nearest TX0022926
- November 15, 2018: MARTIN DIES JR STATE PARK WWTP, Jasper, TX0068276, held by TEXAS PARKS AND WILDLIFE DEPARTMENT
- November 19, 2018: KINGWOOD CENTRAL WWTP, Houston, TX0066583, held by HOUSTON, CITY OF
- November 19, 2018: MONTGOMERY COUNTY MUD 127 WWTP, Oak Ridge North, TX0135941, held by MONTGOMERY COUNTY MUD NO 127
- November 20, 2018: ATASCOSA RIVER WWTF, Pleasanton, TX0022594, held by CITY OF PLEASANTON
- November 21, 2018: LAUGHLIN AFB WWTP, Val Verde County, TX0022608, held by US DEPARTMENT OF THE AIR FORCE
- November 26, 2018: CITY OF ALVIN WWTP, Alvin, TX0024554, held by CITY OF ALVIN
- November 26, 2018: LONGWOOD WATER RECLAMATION FACILITY, Pearland, TX0032743, held by PEARLAND, CITY OF
- November 30, 2018: MUSTANG BAYOU WWTP, Fort Bend County, TX0093068, held by MISSOURI CITY, CITY OF
- December 3, 2018: SOUTHDOWN WWTP, Pearland, TX0085383, held by PEARLAND, CITY OF
- December 3, 2018: HARRIS COUNTY MUD 11 WWTP, Harris County, TX0111767, held by HARRIS COUNTY MUD 11
MAIN PLANT among its neighbors
EPA’s permit file holds 36 discharge permits in the Grays Bayou-Neches River subwatershed (HUC 120200030407), TX0022926 among them. Its county holds 302, 16 of them major permits; TX0022926 is a major permit.
Other permits in the Grays Bayou-Neches River subwatershed (HUC 120200030407)
- 1500 COASTAL HOLDINGS, Port Arthur: TX0064718, minor permit, discharging to NECHES RIVER TIDAL, permit term to August 1, 2016
- BASF TOTAL NAFTA REGION OLEFINS COMPLEX, Port Arthur: TX0119369, minor permit, discharging to JEFFERSON COUNTY DRAINAGE DITCH 7 (JCDD 7), permit term to December 20, 2023
- BAYPORT POLYMERS, Groves: TX0137855, minor permit, discharging to NECHES RIVER TIDAL;BASIN;JEFFERSON CO DRAINAGE DIS, permit term to June 7, 2023
- BHT OPCO STERLING SHIPYARD, Port Neches: TXR05FV51, minor permit, permit term to August 13, 2026
- BLUE H2 - HEAVY HAUL ROAD, Beaumont: TXR1530RT, minor permit, discharging to NECHES RIVER TIDAL, permit term to March 4, 2028
- BLUE H2 - HEAVY HAUL ROAD, Beaumont: TXR1564QH, minor permit, discharging to NECHES RIVER TIDAL, permit term to March 4, 2028
- BME ORANGE COUNTY PARKING LOT, Orange: TXR1542OB, minor permit, discharging to NECHES RIVER, permit term to March 4, 2028
- BUTANE VAPOR HANDLING, Nederland: TXR1563YR, minor permit, discharging to NECHES RIVER TIDAL, permit term to March 4, 2028
- CBP NO 1, Port Arthur: TXG112966, minor permit, permit term to November 6, 2026
- CHANNEL MARINE ENVIRONMENTAL, Orange: TXR05GK50, minor permit, permit term to August 13, 2026
Identity
| Facility as filed | MAIN PLANT |
|---|---|
| Permittee as filed | PORT NECHES,CITY OF |
| NPDES ID | TX0022926 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | November 26, 2018 |
| Expiration date | November 26, 2023 |
| Address | Groves, TX 77615 |
| Receiving water | NECHES RIVER TIDAL |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Grays Bayou-Neches River (HUC 120200030407) |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 53Pollutants on file
- 53Under a numeric limit
- 50With a violation of any kind
- 6With 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.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 3 | 181 | 118 | July 31, 2026 | 245% over the limit |
| Solids, total suspended | 3 | 169 | 108 | July 31, 2026 | 189% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 101 | 65 | July 31, 2026 | 34% over the limit |
| Enterococci | 2 | 69 | 55 | July 31, 2026 | 5,086% over the limit |
| pH | 3 | 13 | 1 | June 30, 2002 | |
| Chlorine, total residual | 2 | 9 | 1 | April 30, 2006 | 1% over the limit |
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 12 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 12 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 12 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 12 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 10 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 2 | 10 | 0 | ||
| Annual amount of sludge land applied | 1 | 7 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 7 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 1 | 7 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 6 | 0 | ||
| Annual amt of sludge incinerated | 1 | 6 | 0 | ||
| Annual amt sludge transported interstate | 1 | 6 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Menidia menidia | 1 | 6 | 0 | ||
| Arsenic, dry weight | 5 | 5 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 5 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 5 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 4 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 4 | 0 | ||
| Selenium, dry weight | 3 | 3 | 0 | ||
| Copper, dry weight | 3 | 3 | 0 | ||
| Cadmium, dry weight | 3 | 3 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 3 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 3 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 3 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 3 | 0 | ||
| Vector attraction reduction alternative used | 2 | 3 | 0 | ||
| Nickel, total [as Ni] | 2 | 2 | 0 | ||
| Level of pathogen requirements achieved | 2 | 2 | 0 | ||
| Description of pathogen option used | 2 | 2 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 2 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 2 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 2 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 2 | 2 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 2 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 2 | 2 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 2 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 2 | 0 | ||
| Annual sludge production, total | 1 | 2 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 2 | 0 | ||
| Fecal coliform | 1 | 1 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 1 | 0 | ||
| Boundary areas | 1 | 1 | 0 | ||
| Salmonella | 1 | 1 | 0 | ||
| Pollutant table from 503.13 | 1 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 0 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 |
Inspections, violations and enforcement
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 29, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| September 22, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| April 25, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| November 2, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| December 8, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| May 17, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| September 29, 2026 | Focused | S |
Formal enforcement and penalties
1 formal actions, 1 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.
| Date | What EPA recorded | Agency | Federal penalty | State or local penalty |
|---|---|---|---|---|
| April 22, 2026 | State CWA Penalty AO | State | $240,000 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| February 24, 2026 | Under Review | State |
| January 20, 2026 | Under Review | State |
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.