Clean Water Act discharge permit · NPDES TX0058408
WILLIAMSBURG REGIONAL WWTP, Houston, TX: NPDES TX0058408 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 55Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
WILLIAMSBURG REGIONAL WWTP, held by WILLIAMSBURG REGIONAL SEWAGE AUTHORITY, holds NPDES permit TX0058408, which discharges to Hcfcdd T101-08-00, T101-00-00, Mason Ck. EPA’s file records it issued September 1, 2017 and expiring May 1, 2022.
WILLIAMSBURG REGIONAL WWTP, Houston, Texas: Individual permit TX0058408, held by WILLIAMSBURG REGIONAL SEWAGE AUTHORITY; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued September 1, 2017, term to May 1, 2022; discharges to HCFCDD T101-08-00, T101-00-00, MASON CK.
- Nitrogen, ammonia total [as N]: 6 limits, 10 violations of any kind, 7 effluent exceedances, latest July 31, 2011, largest 91% over the limit.
- Whole Effluent Toxicity [WET] - C. dubia: 4 limits, 14 violations of any kind, 6 effluent exceedances, latest June 30, 2023, largest 99,999% over the limit.
- E. coli: 2 limits, 8 violations of any kind, 6 effluent exceedances, latest August 31, 2025, largest 99,999% over the limit.
- Flow, in conduit or thru treatment plant: 4 limits, 9 violations of any kind, 3 effluent exceedances, latest July 31, 2007, largest 15% over the limit.
- Solids, total suspended: 3 limits, 4 violations of any kind, 1 effluent exceedance, latest June 30, 2010, largest 48% over the limit.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 6 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas: 2 limits, 6 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 6 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 6 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 6 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 6 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- BOD, carbonaceous [5 day, 20 C]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- pH: 3 limits, 2 violations of any kind, 0 effluent exceedances.
- Chlorine, total residual: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Oxygen, dissolved [DO]: 2 limits, 1 violation of any kind, 0 effluent exceedances.
- Arsenic, dry weight: 5 limits, 0 violations of any kind, 0 effluent exceedances.
- Chromium, sludge, total, dry weight [as Cr]: 5 limits, 0 violations of any kind, 0 effluent exceedances.
- Selenium, dry weight: 3 limits, 0 violations 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.
- Copper, dry weight: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Cadmium, dry weight: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Molybdenum, sludge, total, dry weight [as Mo]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Zinc, sludge, total, dry weight [as Zn]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Lead, sludge, total, dry weight [as Pb]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Nickel, sludge, total, dry weight [as Ni]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Mercury, sludge, total, dry weight [as Hg]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Level of pathogen requirements achieved: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Description of pathogen option used: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Vector attraction reduction alternative used: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Fecal coliform: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Polychlorinated biphenyls [PCBs]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Toxicity characteristic leaching procedure: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Annual whole sludge application rate: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Ann. amt sludge disposed by other method: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Annual amt of sludge incinerated: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Annual sludge production, total: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Annual amount of sludge land applied: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Annual amt. sludge disposed surface unit: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Annual amt sludge disposed in landfill: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Annual amt sludge transported interstate: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Unit w/liner/leachate collection system: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Compliance w/part 258 sludge requirement: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Boundary areas: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Salmonella: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Pollutant table from 503.13: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- October 30, 2025: Permit Violations - Violation Specified in Comment (ST6).
Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 562 were issued before TX0058408.
Coverages issued nearest TX0058408
- August 30, 2017: WHITE OAK BAYOU REGIONAL WWTP, Jersey Village, TX0057029, held by WHITE OAK BAYOU JOINT POWERS BOARD
- August 30, 2017: KAUFMAN COUNTY FWSD 1A WWTP, Forney, TX0116211, held by KAUFMAN COUNTY FWSD NO 1A
- August 30, 2017: WILLOW POINT MUD WWTF, Katy Mills, TX0134261, held by WILLOW POINT MUD
- August 31, 2017: CASTLEWOOD MUD WWTP, Houston, TX0071625, held by CASTLEWOOD MUD
- August 31, 2017: STEWART CREEK WEST WWTP, Denton County, TX0103501, held by NORTH TEXAS MWD
- September 1, 2017: MEMORIAL MUD, Harris County, TX0074004
- September 1, 2017: WEST PARK MUD WWTP, Houston, TX0086185, held by WEST PARK MUD
- September 1, 2017: HARRIS COUNTY MUD 366 WWTP, Houston, TX0119431, held by HARRIS COUNTY MUD 366
- September 7, 2017: ONALASKA WWTP, Onalaska, TX0078841, held by POLK COUNTY FWSD 2
- September 8, 2017: WHITNEY LAKE POWERHOUSE WWTP, Clifton, TX0057991, held by U.S. ARMY CORPS OF ENGINEERS
WILLIAMSBURG REGIONAL WWTP among its neighbors
EPA’s permit file holds 113 discharge permits in the Barker Reservoir-Buffalo Bayou subwatershed (HUC 120401040104), TX0058408 among them. Its county holds 4,455, 195 of them major permits; TX0058408 is a major permit.
Other permits in the Barker Reservoir-Buffalo Bayou subwatershed (HUC 120401040104)
- 66 WATERLINE ALONG KINDER MORGAN CORRIDOR, Katy: TXR1542SS, minor permit, discharging to MASON CREEK, permit term to March 4, 2028
- ADDICKS RESERVOIR, Houston: TXR1506XW, minor permit, discharging to BUFFALO BAYOU, permit term to March 4, 2028
- ANDRETTI INDOOR KARTING AND GAMES, Katy: TXR15152X, minor permit, discharging to MASON CREEK, permit term to March 4, 2023
- BABACAR DIGNE, Katy: TXRNECG75, minor permit, permit term to August 13, 2026
- BECK JUNIOR HIGH ADDITIONS AND RENOVATIONS, Katy: TXR1550XP, minor permit, discharging to BUFFALO BAYOU/BARKER RESERVOIR, permit term to March 4, 2028
- BING SOUTH APARTMENTS, Katy: TXR1517VA, minor permit, discharging to BUFFALO BAYOU/BARKER RESERVOIR, permit term to March 4, 2028
- BING SOUTH APARTMENTS, Katy: TXR1535VA, minor permit, discharging to BUFFALO BAYOU/BARKER RESERVOIR, permit term to March 4, 2028
- CASTLEWOOD MUD WWTP, Houston: TX0071625, major permit, discharging to UNNAMED TRIB, MASON CREEK, BUFFALO, permit term to May 1, 2022
- CHASE BANK - KATY MARKETPLACE, Katy: TXR1566SP, minor permit, discharging to UNNAMED TRIBUTARY TO MASON CREEK, permit term to March 4, 2028
- CIMARRON MUD MS4, Houston: TXR040660, minor permit, discharging to BUFFALO BAYOU, permit term to January 23, 2024
Identity
| Facility as filed | WILLIAMSBURG REGIONAL WWTP |
|---|---|
| Permittee as filed | WILLIAMSBURG REGIONAL SEWAGE AUTHORITY |
| NPDES ID | TX0058408 |
| 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 | September 1, 2017 |
| Expiration date | May 1, 2022 |
| Address | Houston, TX 77449 |
| Receiving water | HCFCDD T101-08-00, T101-00-00, MASON CK |
| Subwatershed | Barker Reservoir-Buffalo Bayou (HUC 120401040104) |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 56Pollutants on file
- 55Under a numeric limit
- 22With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 6 | 10 | 7 | July 31, 2011 | 91% over the limit |
| Whole Effluent Toxicity [WET] - C. dubia | 4 | 14 | 6 | June 30, 2023 | 99,999% over the limit |
| E. coli | 2 | 8 | 6 | August 31, 2025 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 9 | 3 | July 31, 2007 | 15% over the limit |
| Solids, total suspended | 3 | 4 | 1 | June 30, 2010 | 48% over the limit |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 8 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 8 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 8 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 6 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 2 | 6 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 6 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 2 | 6 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 6 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 2 | 6 | 0 | ||
| Whole effluent toxicity | 0 | 4 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 3 | 3 | 0 | ||
| pH | 3 | 2 | 0 | ||
| Chlorine, total residual | 2 | 2 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 1 | 0 | ||
| Arsenic, dry weight | 5 | 0 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 0 | 0 | ||
| Selenium, dry weight | 3 | 0 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 0 | 0 | ||
| Copper, dry weight | 3 | 0 | 0 | ||
| Cadmium, dry weight | 3 | 0 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 0 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 0 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 0 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 0 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 0 | 0 | ||
| Nickel, total [as Ni] | 2 | 0 | 0 | ||
| Level of pathogen requirements achieved | 2 | 0 | 0 | ||
| Description of pathogen option used | 2 | 0 | 0 | ||
| Vector attraction reduction alternative used | 2 | 0 | 0 | ||
| Fecal coliform | 1 | 0 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 0 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 0 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 0 | 0 | ||
| Annual amt of sludge incinerated | 1 | 0 | 0 | ||
| Annual sludge production, total | 1 | 0 | 0 | ||
| Annual amount of sludge land applied | 1 | 0 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 0 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 0 | 0 | ||
| Annual amt sludge transported interstate | 1 | 0 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 0 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 0 | 0 | ||
| Boundary areas | 1 | 0 | 0 | ||
| Salmonella | 1 | 0 | 0 | ||
| Pollutant table from 503.13 | 1 | 0 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 0 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 0 | 0 |
Inspections, violations and enforcement
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 30, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES TX0058408.
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 TX0058408.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.