Clean Water Act discharge permit · NPDES TX0104957
DENTON CREEK REGIONAL WWTF, Denton County, TX: NPDES TX0104957 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 50Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
- 1Inspections on file
- 0Formal enforcement actions
DENTON CREEK REGIONAL WWTF, held by TRINITY RIVER AUTHORITY OF TEX, holds NPDES permit TX0104957, which discharges to Cade Branch, Denton Creek, Grapevine Lake. EPA’s file records it issued January 27, 2017 and expiring September 1, 2021.
DENTON CREEK REGIONAL WWTF, Denton County, Texas: Individual permit TX0104957, held by TRINITY RIVER AUTHORITY OF TEX; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued January 27, 2017, term to September 1, 2021; discharges to CADE BRANCH, DENTON CREEK, GRAPEVINE LAKE.
- Flow, in conduit or thru treatment plant: 10 limits, 145 violations of any kind, 5 effluent exceedances, latest July 31, 2020, largest 33% over the limit.
- E. coli: 4 limits, 5 violations of any kind, 3 effluent exceedances, latest April 30, 2023, largest 162% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 11 limits, 47 violations of any kind, 2 effluent exceedances, latest November 30, 2022, largest 177% over the limit.
- Phosphorus, total [as P]: 7 limits, 47 violations of any kind, 2 effluent exceedances, latest November 30, 2022, largest 41% over the limit.
- Nitrogen, ammonia total [as N]: 14 limits, 51 violations of any kind, 1 effluent exceedance, latest April 30, 2020, largest 10% over the limit.
- Solids, total suspended: 7 limits, 51 violations of any kind, 0 effluent exceedances.
- IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 4 limits, 2 violations of any kind, 0 effluent exceedances.
- IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 4 limits, 2 violations of any kind, 0 effluent exceedances.
- IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 4 limits, 2 violations of any kind, 0 effluent exceedances.
- IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 4 limits, 2 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #1: 7 limits, 0 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #2: 7 limits, 0 violations of any kind, 0 effluent exceedances.
- pH: 5 limits, 0 violations 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.
- IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelas: 4 limits, 0 violations of any kind, 0 effluent exceedances.
- IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 4 limits, 0 violations of any kind, 0 effluent exceedances.
- IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelas: 4 limits, 0 violations of any kind, 0 effluent exceedances.
- IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 4 limits, 0 violations of any kind, 0 effluent exceedances.
- Selenium, dry weight: 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.
- Oxygen, dissolved [DO]: 2 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.
- April 8, 2026: Permit Violations - Violation Specified in Comment (ST6).
- April 8, 2026: Focused (S).
- April 23, 2025: Permit Violations - Violation Specified in Comment (ST6).
- February 9, 2024: Permit Violations - Violation Specified in Comment (ST6).
- April 14, 2023: Permit Violations - Violation Specified in Comment (ST6).
- August 26, 2022: Permit Violations - Violation Specified in Comment (ST6).
- May 20, 2021: Permit Violations - Violation Specified in Comment (ST6).
- January 22, 2019: Permit Violations - Violation Specified in Comment (ST6).
- March 14, 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; 390 were issued before TX0104957. TRINITY RIVER AUTHORITY OF TEX holds 2 permits in Texas.
Other permits held by TRINITY RIVER AUTHORITY OF TEX
- CENTRAL REGIONAL WWTP, Dallas: TX0022802, issued February 4, 2008
Coverages issued nearest TX0104957
- January 13, 2017: CITY OF MASON WWTP, Mason, TX0071111, held by MASON, CITY OF
- January 13, 2017: BEAR CREEK WWTP, Lavon, TX0127345, held by LAVON, CITY OF
- January 19, 2017: CITY OF ATHENS NORTH WWTP, Athens, TX0025372, held by ATHENS, CITY OF
- January 20, 2017: CITY OF SPRINGTOWN WWTP, Springtown, TX0032646, held by SPRINGTOWN, CITY OF
- January 23, 2017: ROWLETT CREEK REGIONAL WWTP, Plano, TX0047911, held by NORTH TEXAS MWD
- January 30, 2017: KINGS CREEK WWTP, Terrell, TX0022527, held by CITY OF TERRELL
- January 30, 2017: ASH CREEK WWTP, Azle, TX0023116, held by CITY OF AZLE
- January 30, 2017: CITY OF COOLIDGE WWTF, Coolidge, TX0057045, held by COLLIDGE, CITY OF
- January 30, 2017: BRANCH REGIONAL WATER RECLAMATION WWTP, Lewisville, TX0125172, held by UPPER TRINITY REGIONAL WATER DISTRICT
- January 30, 2017: COLLIN COUNTY ADVENTURE CAMP WWTP, Anna, TX0126241, held by COLLIN COUNTY AND YOUNG MENS ASSOCIATION OF METROPOLITAN DALLAS
DENTON CREEK REGIONAL WWTF among its neighbors
EPA’s permit file holds 72 discharge permits in the Denton Creek-Grapevine Lake subwatershed (HUC 120301040304), TX0104957 among them. Its county holds 1,238, 16 of them major permits; TX0104957 is a major permit.
Other permits in the Denton Creek-Grapevine Lake subwatershed (HUC 120301040304)
- ARGYLE ELEMENTARY NO 5, Argyle: TXR1531WF, minor permit, discharging to UNNAMED TRIBUTARY TO GRAHAM BRANCH TO DENTON CREEK, permit term to March 4, 2028
- ARGYLE ISD - HIGH SCHOOL CONNECTOR ADDITION, Flower Mound: TXR1506ZA, minor permit, discharging to GRAHAM BRANCH TO DENTON CREEK, permit term to March 4, 2028
- ARGYLE LANDING, Argyle: TXR1545OX, minor permit, discharging to GRAHAM BRANCH, permit term to March 4, 2028
- AURA BROOKVIEW MULTIFAMILY, Flower Mound: TXR1585XH, minor permit, discharging to UNNAMED TRIBUTARY TO GRAHAM BRANCH TO DENTON CREEK, permit term to March 4, 2028
- BATCH PLANT SUPPORTING BROOKVIEW PH 1A & 1B, Flower Mound: TXR1520XL, minor permit, discharging to GRAHAM BRANCH, permit term to March 4, 2028
- BRIDGESTONE AMERICAS, Roanoke: TXRNECF81, minor permit, permit term to August 13, 2026
- BROOKVIEW PH 1A & 1B, Flower Mound: TXR1506UR, minor permit, discharging to UNNAMED TRIBUTARY OF GRAHAM BRANCH, permit term to March 4, 2028
- BROOKVIEW PH 1A & 1B, Flower Mound: TXR1551VN, minor permit, discharging to GRAHAM BRANCH, permit term to March 4, 2028
- BROOKVIEW PH 2, Flower Mound: TXR1510YH, minor permit, discharging to UNNAMED TRIBUTARY OF GRAHAM BRANCH, permit term to March 4, 2028
- BROOKVIEW PH 2, Flower Mound: TXR1578YM, minor permit, discharging to UNNAMED TRIBUTARY OF GRAHAM BRANCH, permit term to March 4, 2028
Identity
| Facility as filed | DENTON CREEK REGIONAL WWTF |
|---|---|
| Permittee as filed | TRINITY RIVER AUTHORITY OF TEX |
| NPDES ID | TX0104957 |
| 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 | January 27, 2017 |
| Expiration date | September 1, 2021 |
| Address | Denton County, TX 76262 |
| Receiving water | CADE BRANCH, DENTON CREEK, GRAPEVINE LAKE |
| Subwatershed | Denton Creek-Grapevine Lake (HUC 120301040304) |
Effluent limits and exceedances
- 50Pollutants on file
- 50Under a numeric limit
- 10With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 10 | 145 | 5 | July 31, 2020 | 33% over the limit |
| E. coli | 4 | 5 | 3 | April 30, 2023 | 162% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 11 | 47 | 2 | November 30, 2022 | 177% over the limit |
| Phosphorus, total [as P] | 7 | 47 | 2 | November 30, 2022 | 41% over the limit |
| Nitrogen, ammonia total [as N] | 14 | 51 | 1 | April 30, 2020 | 10% over the limit |
| Solids, total suspended | 7 | 51 | 0 | ||
| IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 2 | 0 | ||
| IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 2 | 0 | ||
| IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 2 | 0 | ||
| IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 2 | 0 | ||
| Whole effluent toxicity - retest #1 | 7 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 7 | 0 | 0 | ||
| pH | 5 | 0 | 0 | ||
| Arsenic, dry weight | 5 | 0 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 0 | 0 | ||
| IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelas | 4 | 0 | 0 | ||
| IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 4 | 0 | 0 | ||
| IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelas | 4 | 0 | 0 | ||
| IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 4 | 0 | 0 | ||
| Selenium, dry weight | 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 | ||
| Oxygen, dissolved [DO] | 2 | 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
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 8, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| April 23, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| February 9, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| April 14, 2023 | Permit Violations - Violation Specified in Comment | ST6 |
| August 26, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| May 20, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| January 22, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| March 14, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| April 8, 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
EPA’s informal enforcement file holds no action for NPDES TX0104957.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, TX0104957.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
Nearby on the register
- Discharge permits in Denton County
- Every permit record in Denton County, A to Z
- Discharge permits in Texas
- Every permit record in Texas, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.