Clean Water Act discharge permit · NPDES TX0076481
HARRIS COUNTY WCID NO 110 WWTP, Houston, TX: NPDES TX0076481 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 54Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
- 1Inspections on file
- 0Formal enforcement actions
HARRIS COUNTY WCID NO 110 WWTP, held by HARRIS COUNTY WCID 110, holds NPDES permit TX0076481, which discharges to Hcfcdd K-123-00-00, Cypress Creek. EPA’s file records it issued May 4, 2018 and expiring May 4, 2023.
HARRIS COUNTY WCID NO 110 WWTP, Houston, Texas: Individual permit TX0076481, held by HARRIS COUNTY WCID 110; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued May 4, 2018, term to May 4, 2023; discharges to HCFCDD K-123-00-00, CYPRESS CREEK.
- Nitrogen, ammonia total [as N]: 6 limits, 15 violations of any kind, 14 effluent exceedances, latest July 31, 2024, largest 400% over the limit.
- Flow, in conduit or thru treatment plant: 4 limits, 18 violations of any kind, 11 effluent exceedances, latest December 31, 2018, largest 133% over the limit.
- Solids, total suspended: 3 limits, 11 violations of any kind, 7 effluent exceedances, latest July 31, 2024, largest 193% over the limit.
- Oxygen, dissolved [DO]: 2 limits, 3 violations of any kind, 2 effluent exceedances, latest July 31, 2025, largest 58% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 6 limits, 5 violations of any kind, 1 effluent exceedance, latest February 28, 2023, largest 14% over the limit.
- pH: 3 limits, 4 violations of any kind, 1 effluent exceedance, latest March 31, 2023.
- LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas: 0 limits, 21 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex: 0 limits, 20 violations of any kind, 0 effluent exceedances.
- NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex: 0 limits, 16 violations of any kind, 0 effluent exceedances.
- NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas: 0 limits, 16 violations of any kind, 0 effluent exceedances.
- LOAEC Lethal Static Renewal 48HR Acute Daphnia pulex: 0 limits, 10 violations of any kind, 0 effluent exceedances.
- LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelas: 0 limits, 10 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #1: 3 limits, 8 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #2: 3 limits, 8 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.
- 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.
- Chlorine, total residual: 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.
- Vector attraction reduction alternative used: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Fecal coliform: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Polychlorinated biphenyls [PCBs]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Toxicity characteristic leaching procedure: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Ann. amt sludge disposed by other method: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Annual amt of sludge incinerated: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Annual sludge production, total: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Annual amount of sludge land applied: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Annual amt. sludge disposed surface unit: 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.
- Unit w/liner/leachate collection system: 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.
- 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.
- E. coli: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas: 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.
- March 19, 2026: Permit Violations - Violation Specified in Comment (ST6).
- March 19, 2026: Evaluation (S).
- December 4, 2023: Permit Violations - Violation Specified in Comment (ST6).
- December 8, 2021: Permit Violations - Violation Specified in Comment (ST6).
- January 8, 2021: Permit Violations - Violation Specified in Comment (ST6).
Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 764 were issued before TX0076481.
Coverages issued nearest TX0076481
- April 26, 2018: SPRING TRAILS WWTF, Montgomery, TX0128295, held by MONTGOMERY COUNTY MUD 119
- April 26, 2018: HARRIS COUNTY MUD 319 WWTP, Hockley, TX0135241, held by HARRIS COUNTY MUD 319
- April 30, 2018: HUMBLE, CITY OF SOUTHWEST WWTP, Humble, TX0034401, held by CITY OF HUMBLE
- April 30, 2018: LONE STAR WWTP, Lone Star, TX0088081, held by CITY OF LONE STAR
- May 3, 2018: WICHITA FALLS RESOURCES RECOVERY FACILITY, Wichita Falls, TX0047686, held by WICHITA FALLS CITY OF
- May 8, 2018: CITY OF DOMINO WWTP, Queen City, TX0136123, held by DOMINO, CITY OF
- May 9, 2018: HARRIS COUNTY WCID 74 WWTP, Houston, TX0023825, held by HARRIS COUNTY WCID 74
- May 9, 2018: REFUGIO COUNTY WCID 1 WWTP, Tivoli, TX0054101, held by REFUGIO COUNTY WCID 1
- May 9, 2018: HARRIS COUNTY MUD 26 WWTP, Humble, TX0056537, held by HARRIS COUNTY MUD 26
- May 9, 2018: NORTHAMPTON MUD WWTP, Houston, TX0058548, held by NORTHAMPTON MUD
HARRIS COUNTY WCID NO 110 WWTP among its neighbors
EPA’s permit file holds 170 discharge permits in the Turkey Creek-Cypress Creek subwatershed (HUC 120401020107), TX0076481 among them. Its county holds 4,455, 195 of them major permits; TX0076481 is a major permit.
Other permits in the Turkey Creek-Cypress Creek subwatershed (HUC 120401020107)
- AMAZONCOM SERVICES SAH1, Houston: TXR05GP18, minor permit, permit term to August 13, 2026
- AMC FACILITIES WWTF, Houston: TX0083836, minor permit, discharging to ONSITE POND;UNNAMED DITCH;HCFCD P140-04-03, permit term to December 1, 2022
- AMERICAN BUILDERS & CONTRACTORS SUPPLY, Houston: TXR05GD66, minor permit, permit term to August 13, 2026
- ARTHUR BAYER PARK WWTP, Houston: TX0096865, minor permit, discharging to LEMM GULLY; CYPRESS CREEK, permit term to February 1, 2018
- BASS PRO SHOPS OUTDOOR WORLD - SPRING, Spring: TXR1572PD, minor permit, discharging to WUNSCHE GULLY, permit term to March 4, 2028
- BAUER HOCKLEY MINI STORAGE, Hockley: TXR1540YX, minor permit, discharging to LAKE HOUSTON, permit term to March 4, 2028
- BRADBURY FOREST SECTION 11-14, Spring: TXR1511NG, minor permit, discharging to SPRING CREEK, permit term to March 4, 2028
- BRIDGESTONE MUD WWTP NO. 1, Houston: TX0072150, major permit, discharging to SEALS GULLY, CYPRESS CREEK, permit term to April 13, 2024
- BRIDGESTONE MUD WWTP NO. 2, Tomball: TX0140643, minor permit, discharging to SPRING CREEK, permit term to March 14, 2027
- BRIDGESTONE WWTP NO 1 IMPROVEMENTS, Spring: TXR1566XA, minor permit, discharging to CYPRESS CREEK, permit term to March 4, 2028
Identity
| Facility as filed | HARRIS COUNTY WCID NO 110 WWTP |
|---|---|
| Permittee as filed | HARRIS COUNTY WCID 110 |
| NPDES ID | TX0076481 |
| 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 | May 4, 2018 |
| Expiration date | May 4, 2023 |
| Address | Houston, TX 77388 |
| Receiving water | HCFCDD K-123-00-00, CYPRESS CREEK |
| Subwatershed | Turkey Creek-Cypress Creek (HUC 120401020107) |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 60Pollutants on file
- 54Under a numeric limit
- 46With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 6 | 15 | 14 | July 31, 2024 | 400% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 18 | 11 | December 31, 2018 | 133% over the limit |
| Solids, total suspended | 3 | 11 | 7 | July 31, 2024 | 193% over the limit |
| Oxygen, dissolved [DO] | 2 | 3 | 2 | July 31, 2025 | 58% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 6 | 5 | 1 | February 28, 2023 | 14% over the limit |
| pH | 3 | 4 | 1 | March 31, 2023 | |
| LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas | 0 | 21 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 0 | 20 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 0 | 16 | 0 | ||
| NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas | 0 | 16 | 0 | ||
| LOAEC Lethal Static Renewal 48HR Acute Daphnia pulex | 0 | 10 | 0 | ||
| LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelas | 0 | 10 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 8 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 8 | 0 | ||
| Arsenic, dry weight | 5 | 5 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 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 | ||
| Chlorine, total residual | 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 | ||
| Vector attraction reduction alternative used | 2 | 2 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 2 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 2 | 0 | ||
| Fecal coliform | 1 | 1 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 1 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 1 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 1 | 0 | ||
| Annual amt of sludge incinerated | 1 | 1 | 0 | ||
| Annual sludge production, total | 1 | 1 | 0 | ||
| Annual amount of sludge land applied | 1 | 1 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 1 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 1 | 0 | ||
| Annual amt sludge transported interstate | 1 | 1 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 1 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 1 | 0 | ||
| Boundary areas | 1 | 1 | 0 | ||
| Salmonella | 1 | 1 | 0 | ||
| Pollutant table from 503.13 | 1 | 1 | 0 | ||
| E. coli | 2 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 2 | 0 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 2 | 0 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 |
Inspections, violations and enforcement
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 19, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| December 4, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| December 8, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| January 8, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| March 19, 2026 | Evaluation | 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
EPA’s informal enforcement file holds no action for NPDES TX0076481.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.