Clean Water Act discharge permit · NPDES TX0047562
LYNN BAYOU WWTF, Port Lavaca, TX: NPDES TX0047562 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 50Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
- 2Inspections on file
- 0Formal enforcement actions
LYNN BAYOU WWTF, held by PORT LAVACA, CITY OF, holds NPDES permit TX0047562, which discharges to Lynn Bayou;Lavaca Bay/Chocolate Bay. EPA’s file records it issued March 16, 2018 and expiring January 1, 2023.
LYNN BAYOU WWTF, Port Lavaca, Texas: Individual permit TX0047562, held by PORT LAVACA, CITY OF; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued March 16, 2018, term to January 1, 2023; discharges to LYNN BAYOU;LAVACA BAY/CHOCOLATE BAY.
- Copper, total [as Cu]: 3 limits, 154 violations of any kind, 104 effluent exceedances, latest October 31, 2023, largest 67,468% over the limit.
- Enterococci: 2 limits, 73 violations of any kind, 63 effluent exceedances, latest April 30, 2026, largest 99,999% over the limit.
- Zinc, total [as Zn]: 3 limits, 95 violations of any kind, 45 effluent exceedances, latest November 30, 2022, largest 698% over the limit.
- Coliform, fecal general: 0 limits, 40 violations of any kind, 24 effluent exceedances, latest June 30, 2003, largest 2,900% over the limit.
- Flow, in conduit or thru treatment plant: 4 limits, 84 violations of any kind, 17 effluent exceedances, latest July 31, 2024, largest 60% over the limit.
- Solids, total suspended: 3 limits, 57 violations of any kind, 9 effluent exceedances, latest February 28, 2022, largest 2,833% over the limit.
- BOD, 5-day, 20 deg. C: 3 limits, 51 violations of any kind, 3 effluent exceedances, latest February 28, 2022, largest 63% over the limit.
- pH: 3 limits, 36 violations of any kind, 3 effluent exceedances, latest April 30, 2020.
- Oxygen, dissolved [DO]: 1 limit, 17 violations of any kind, 1 effluent exceedance, latest August 31, 2017, largest 100% over the limit.
- Polychlorinated biphenyls [PCBs]: 1 limit, 6 violations of any kind, 1 effluent exceedance, latest July 31, 2004, largest 2% over the limit.
- Whole effluent toxicity: 0 limits, 32 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia): 0 limits, 21 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 0 limits, 21 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 0 limits, 21 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 0 limits, 18 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 0 limits, 18 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia): 0 limits, 18 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia: 0 limits, 17 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia: 0 limits, 17 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia: 0 limits, 17 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia: 0 limits, 16 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia: 0 limits, 16 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia: 0 limits, 16 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia): 1 limit, 14 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Menidia menidia: 1 limit, 11 violations of any kind, 0 effluent exceedances.
- Chromium, sludge, total, dry weight [as Cr]: 5 limits, 8 violations of any kind, 0 effluent exceedances.
- Arsenic, dry weight: 5 limits, 5 violations of any kind, 0 effluent exceedances.
- Toxicity characteristic leaching procedure: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Ann. amt sludge disposed by other method: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Annual amt of sludge incinerated: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Annual sludge production, total: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Annual amount of sludge land applied: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Annual amt. sludge disposed surface unit: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Annual amt sludge disposed in landfill: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Annual amt sludge transported interstate: 1 limit, 5 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.
- Mercury, sludge, total, dry weight [as Hg]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Level of pathogen requirements achieved: 2 limits, 3 violations of any kind, 0 effluent exceedances.
- Description of pathogen option used: 2 limits, 3 violations of any kind, 0 effluent exceedances.
- Vector attraction reduction alternative used: 2 limits, 3 violations of any kind, 0 effluent exceedances.
- Compliance w/part 258 sludge requirement: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- IC25 Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 2 limits, 2 violations of any kind, 0 effluent exceedances.
- IC25 Lethal Static Renewal 7 Day Chronic Menidia beryllina: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- IC25 Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 2 limits, 2 violations of any kind, 0 effluent exceedances.
- IC25 Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Pollutant table from 503.13: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #1: 3 limits, 1 violation of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #2: 3 limits, 1 violation 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.
- IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia): 2 limits, 0 violations of any kind, 0 effluent exceedances.
- August 28, 2026: Follow-Up (S).
- February 10, 2026: Phone Call/ EMAIL (State).
- January 15, 2026: Permit Violations - Violation Specified in Comment (ST6).
- January 15, 2026: Focused (S).
- December 17, 2024: Permit Violations - Violation Specified in Comment (ST6).
- July 26, 2022: Permit Violations - Violation Specified in Comment (ST6).
- December 4, 2018: Permit Violations - Violation Specified in Comment (ST6).
- February 1, 2017: Permit Violations - Violation Specified in Comment (ST6).
Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 714 were issued before TX0047562.
Coverages issued nearest TX0047562
- March 15, 2018: HARRIS COUNTY WCID 1 WWTP, Highlands, TX0023311, held by HARRIS COUNTY WCID 1
- March 15, 2018: MEMORIAL HILLS UD WWTP, Houston, TX0046671, held by MEMORIAL HILLS UD
- March 15, 2018: BLAKETREE MUD 1 WWTP, Montgomery, TX0135658, held by BLUEJACK DEVELOPMENT CO LLC
- March 15, 2018: CITY OF SHEPHERD, Shepherd, TX0137596
- March 15, 2018: RIVER RANCH MUD 1 WWTP, Dayton, TX0137901, held by RIVER RANCH HOLDINGS LLC
- March 16, 2018: HARRIS COUNTY MUD 196 WWTP, Houston, TX0088838, held by HARRIS COUNTY MUD 196
- March 19, 2018: PARK CREEK WWTP, Cypress, TX0128180, held by NORTHWEST HARRIS COUNTY MUD 10
- March 19, 2018: CITY OF WORTHAM, Wortham, TX0137782
- March 19, 2018: NORTHWEST WWTP, City Of Houston, TX0137898, held by HARRIS COUNTY MUD 418
- March 21, 2018: CITY OF HAWKINS WWTP, Hawkins, TX0023035, held by CITY OF HAWKINS
LYNN BAYOU WWTF among its neighbors
EPA’s permit file holds 5 discharge permits in the Sixmile Creek-Lavaca Bay subwatershed (HUC 121004020305), TX0047562 among them. Its county holds 50, 6 of them major permits; TX0047562 is a major permit.
Other permits in the Sixmile Creek-Lavaca Bay subwatershed (HUC 121004020305)
- B&M MACHINERY, Port Lavaca: TXR05GM92, minor permit, permit term to August 13, 2026
- CITY OF PORT LAVACA, Port Lavaca: TXR05EZ47, minor permit, permit term to August 13, 2026
- FM 3084 STP 2025848 3171-01-012, Port Lavaca: TXR1522XG, minor permit, discharging to LAVACA BAY, permit term to March 4, 2028
- FM 3084 STP 2025848 3171-01-012, Port Lavaca: TXR1569XF, minor permit, discharging to LAVACA BAY, permit term to March 4, 2028
Identity
| Facility as filed | LYNN BAYOU WWTF |
|---|---|
| Permittee as filed | PORT LAVACA, CITY OF |
| NPDES ID | TX0047562 |
| 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 | March 16, 2018 |
| Expiration date | January 1, 2023 |
| Address | Port Lavaca, TX 77979 |
| Receiving water | LYNN BAYOU;LAVACA BAY/CHOCOLATE BAY |
| Subwatershed | Sixmile Creek-Lavaca Bay (HUC 121004020305) |
Effluent limits and exceedances
- 64Pollutants on file
- 50Under a numeric limit
- 59With a violation of any kind
- 10With 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 64 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Copper, total [as Cu] | 3 | 154 | 104 | October 31, 2023 | 67,468% over the limit |
| Enterococci | 2 | 73 | 63 | April 30, 2026 | 99,999% over the limit |
| Zinc, total [as Zn] | 3 | 95 | 45 | November 30, 2022 | 698% over the limit |
| Coliform, fecal general | 0 | 40 | 24 | June 30, 2003 | 2,900% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 84 | 17 | July 31, 2024 | 60% over the limit |
| Solids, total suspended | 3 | 57 | 9 | February 28, 2022 | 2,833% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 51 | 3 | February 28, 2022 | 63% over the limit |
| pH | 3 | 36 | 3 | April 30, 2020 | |
| Oxygen, dissolved [DO] | 1 | 17 | 1 | August 31, 2017 | 100% over the limit |
| Polychlorinated biphenyls [PCBs] | 1 | 6 | 1 | July 31, 2004 | 2% over the limit |
| Whole effluent toxicity | 0 | 32 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 0 | 21 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 0 | 21 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 0 | 21 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 0 | 18 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 0 | 18 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 0 | 18 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 0 | 17 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 0 | 17 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 0 | 17 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 0 | 16 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 0 | 16 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 0 | 16 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 1 | 14 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Menidia menidia | 1 | 11 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 8 | 0 | ||
| Arsenic, dry weight | 5 | 5 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 5 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 5 | 0 | ||
| Annual amt of sludge incinerated | 1 | 5 | 0 | ||
| Annual sludge production, total | 1 | 5 | 0 | ||
| Annual amount of sludge land applied | 1 | 5 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 5 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 5 | 0 | ||
| Annual amt sludge transported interstate | 1 | 5 | 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 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 3 | 0 | ||
| Level of pathogen requirements achieved | 2 | 3 | 0 | ||
| Description of pathogen option used | 2 | 3 | 0 | ||
| Vector attraction reduction alternative used | 2 | 3 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 3 | 0 | ||
| Nickel, total [as Ni] | 2 | 2 | 0 | ||
| IC25 Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 2 | 0 | ||
| IC25 Lethal Static Renewal 7 Day Chronic Menidia beryllina | 2 | 2 | 0 | ||
| IC25 Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 2 | 0 | ||
| IC25 Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina | 2 | 2 | 0 | ||
| Pollutant table from 503.13 | 1 | 2 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 1 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 1 | 0 | ||
| Fecal coliform | 1 | 1 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 1 | 0 | ||
| Boundary areas | 1 | 1 | 0 | ||
| Salmonella | 1 | 1 | 0 | ||
| IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 0 | 0 |
Inspections, violations and enforcement
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 15, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| December 17, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| July 26, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| December 4, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
| February 1, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| August 28, 2026 | Follow-Up | S |
| January 15, 2026 | Focused | 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
| Date | What EPA recorded | Agency |
|---|---|---|
| February 10, 2026 | Phone Call/ EMAIL | State |
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.