Clean Water Act discharge permit · NPDES TX0023311
HARRIS COUNTY WCID 1 WWTP, Highlands, TX: NPDES TX0023311 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 55Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
HARRIS COUNTY WCID 1 WWTP, held by HARRIS COUNTY WCID 1, holds NPDES permit TX0023311, which discharges to White'S Lake;San Jacinto River Tidal. EPA’s file records it issued March 15, 2018 and expiring July 1, 2022.
HARRIS COUNTY WCID 1 WWTP, Highlands, Texas: Individual permit TX0023311, held by HARRIS COUNTY WCID 1; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued March 15, 2018, term to July 1, 2022; discharges to WHITE'S LAKE;SAN JACINTO RIVER TIDAL.
- Enterococci: 2 limits, 7 violations of any kind, 5 effluent exceedances, latest March 31, 2026, largest 4,554% over the limit.
- Nitrogen, ammonia total [as N]: 6 limits, 8 violations of any kind, 2 effluent exceedances, latest November 30, 2025, largest 38% over the limit.
- Flow, in conduit or thru treatment plant: 4 limits, 12 violations of any kind, 1 effluent exceedance, latest November 30, 2004, largest 12% over the limit.
- Chlorine, total residual: 2 limits, 6 violations of any kind, 1 effluent exceedance, latest July 31, 2024, largest 73% over the limit.
- pH: 3 limits, 8 violations of any kind, 0 effluent exceedances.
- Arsenic, dry weight: 5 limits, 7 violations of any kind, 0 effluent exceedances.
- Chromium, sludge, total, dry weight [as Cr]: 5 limits, 7 violations of any kind, 0 effluent exceedances.
- Solids, total suspended: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- BOD, carbonaceous [5 day, 20 C]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Zinc, total [as Zn]: 3 limits, 3 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.
- Oxygen, dissolved [DO]: 1 limit, 3 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.
- Ann. amt sludge disposed by other method: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt of sludge incinerated: 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 amount of sludge land applied: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt. sludge disposed surface unit: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Unit w/liner/leachate collection system: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Boundary areas: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 2 limits, 1 violation of any kind, 0 effluent exceedances.
- Fecal coliform: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Annual amt sludge disposed in landfill: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Annual amt sludge transported interstate: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Compliance w/part 258 sludge requirement: 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.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia): 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 2 limits, 0 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 2 limits, 0 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 2 limits, 0 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia): 2 limits, 0 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Annual whole sludge application rate: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia): 1 limit, 0 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Menidia menidia: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- December 10, 2025: Permit Violations - Violation Specified in Comment (ST6).
- October 25, 2023: Permit Violations - Violation Specified in Comment (ST6).
- March 2, 2022: Permit Violations - Violation Specified in Comment (ST6).
- February 2, 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; 708 were issued before TX0023311.
Coverages issued nearest TX0023311
- March 14, 2018: NORTHWEST FREEWAY MUD WWTP, Houston, TX0075183, held by NORTHWEST FREEWAY MUD
- March 14, 2018: ALDINE ISD CHRISMAN RD WTP, Houston, TX0094188, held by ALDINE ISD
- March 14, 2018: HARRIS COUNTY MUD 401 WWTP, Houston, TX0125687, held by HARRIS COUNTY MUD 401
- March 14, 2018: PINE TRACE WWTP, Tomball, TX0127795, held by HARRIS COUNTY MUD 480
- March 15, 2018: WEST MEMORIAL MUD WWTP, Houston, TX0021512, held by WEST MEMORIAL MUD
- 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: LYNN BAYOU WWTF, Port Lavaca, TX0047562, held by PORT LAVACA, CITY OF
HARRIS COUNTY WCID 1 WWTP among its neighbors
EPA’s permit file holds 49 discharge permits in the Highlands Reservoir-San Jacinto River subwatershed (HUC 120401040705), TX0023311 among them. Its county holds 4,455, 195 of them major permits; TX0023311 is a major permit.
Other permits in the Highlands Reservoir-San Jacinto River subwatershed (HUC 120401040705)
- BRASKEM AMERICA LA PORTE PLANT, La Porte: TX0074276, major permit, discharging to DRAINAGE DITCH, SAN JACINTO BAY, permit term to February 26, 2024
- CHANNEL SHIPYARD, Baytown: TX0104531, minor permit, discharging to HOUSTON SHIP CHANNEL/SAN JACINTO RI, permit term to February 4, 2024
- CHANNEL SHIPYARD, Baytown: TXR05FD73, minor permit, permit term to August 13, 2026
- CHANNELVIEW PLANT, Channelview: TXG110901, minor permit, permit term to November 7, 2011
- CHANNELVIEW PLANT, Channelview: TXG111863, minor permit, discharging to SAN JACINTO RIVER, permit term to November 7, 2016
- CLEAN-CO SYSTEMS, Channelview: TXR05FU12, minor permit, permit term to August 13, 2026
- COTAC USA, Pasadena: TXRNEBZ81, minor permit, permit term to August 13, 2026
- COUNTRY TERRACE WWTP, Highlands: TX0076082, minor permit, discharging to HCFCD DITCH; GOOSE CREEK; TABBS BAY, permit term to July 3, 2023
- CTC LIQUID SERVICES - MARKET STREET OPERATIONS, Channelview: TXR05GY36, minor permit, permit term to August 13, 2026
- CTC LIQUID SERVICES - MARKET STREET OPERATIONS, Channelview: TXR05HB65, minor permit, permit term to August 13, 2026
Identity
| Facility as filed | HARRIS COUNTY WCID 1 WWTP |
|---|---|
| Permittee as filed | HARRIS COUNTY WCID 1 |
| NPDES ID | TX0023311 |
| 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 15, 2018 |
| Expiration date | July 1, 2022 |
| Address | Highlands, TX 77562 |
| Receiving water | WHITE'S LAKE;SAN JACINTO RIVER TIDAL |
| Subwatershed | Highlands Reservoir-San Jacinto River (HUC 120401040705) |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 55Pollutants on file
- 55Under a numeric limit
- 39With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Enterococci | 2 | 7 | 5 | March 31, 2026 | 4,554% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 8 | 2 | November 30, 2025 | 38% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 12 | 1 | November 30, 2004 | 12% over the limit |
| Chlorine, total residual | 2 | 6 | 1 | July 31, 2024 | 73% over the limit |
| pH | 3 | 8 | 0 | ||
| Arsenic, dry weight | 5 | 7 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 7 | 0 | ||
| Solids, total suspended | 3 | 6 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 3 | 6 | 0 | ||
| Nickel, total [as Ni] | 2 | 4 | 0 | ||
| Zinc, total [as Zn] | 3 | 3 | 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 | ||
| Oxygen, dissolved [DO] | 1 | 3 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 2 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 2 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 2 | 0 | ||
| Annual amt of sludge incinerated | 1 | 2 | 0 | ||
| Annual sludge production, total | 1 | 2 | 0 | ||
| Annual amount of sludge land applied | 1 | 2 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 2 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 2 | 0 | ||
| Boundary areas | 1 | 2 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 1 | 0 | ||
| Fecal coliform | 1 | 1 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 1 | 0 | ||
| Annual amt sludge transported interstate | 1 | 1 | 0 | ||
| Compliance w/part 258 sludge requirement | 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 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia | 2 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 0 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia | 2 | 0 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 0 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia | 2 | 0 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia) | 2 | 0 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia | 2 | 0 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 1 | 0 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Menidia menidia | 1 | 0 | 0 |
Inspections, violations and enforcement
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 10, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| October 25, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| March 2, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| February 2, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES TX0023311.
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 TX0023311.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.