Clean Water Act discharge permit · NPDES TX0099732
CITY OF WILLOW PARK WWTP, Parker County, TX: NPDES TX0099732 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 39Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
CITY OF WILLOW PARK WWTP, held by WILLOW PARK, CITY OF, holds NPDES permit TX0099732, which discharges to Clear Fork Trinity River Below Lake Weatherofrd. EPA’s file records it issued December 20, 2017 and expiring September 1, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CITY OF WILLOW PARK WWTP |
|---|---|
| Permittee as filed | WILLOW PARK, CITY OF |
| NPDES ID | TX0099732 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 20, 2017 |
| Expiration date | September 1, 2021 |
| Address | Parker County, TX 76087 |
| Receiving water | CLEAR FORK TRINITY RIVER BELOW LAKE WEATHEROFRD |
| Subwatershed | Squaw Creek-Clear Fork Trinity River (HUC 120301020204) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 39Pollutants on file
- 39Under a numeric limit
- 38With a violation of any kind
- 9With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 6 | 123 | 89 | June 30, 2019 | 2,047% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 104 | 74 | November 30, 2022 | 508% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 6 | 104 | 71 | June 30, 2022 | 186% over the limit |
| E. coli | 2 | 25 | 25 | January 31, 2026 | 586% over the limit |
| Chlorine, total residual | 4 | 42 | 24 | November 30, 2007 | 80% over the limit |
| Phosphorus, total [as P] | 3 | 17 | 17 | May 31, 2019 | 240% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 30 | 4 | December 31, 2015 | 53,425,232% over the limit |
| Oxygen, dissolved [DO] | 1 | 13 | 3 | June 30, 2005 | 16% over the limit |
| pH | 5 | 24 | 1 | August 31, 2015 | |
| Chromium, sludge, total, dry weight [as Cr] | 5 | 8 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 6 | 0 | ||
| Arsenic, dry weight | 5 | 5 | 0 | ||
| Annual amt sludge transported interstate | 1 | 5 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 4 | 0 | ||
| Annual sludge production, total | 1 | 4 | 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 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 3 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 3 | 0 | ||
| Annual amt of sludge incinerated | 1 | 3 | 0 | ||
| Annual amount of sludge land applied | 1 | 3 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 3 | 0 | ||
| Nickel, total [as Ni] | 2 | 2 | 0 | ||
| Pollutant table from 503.13 | 1 | 2 | 0 | ||
| Fecal coliform | 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 | ||
| Annual whole sludge application rate | 1 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 28, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| March 2, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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, TX0099732.
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
EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID TX0099732 there.
Nearby on the register
- Discharge permits in Parker County
- Every permit record in Parker County, A to Z
- Discharge permits in Texas
- Every permit record in Texas, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.