Clean Water Act discharge permit · NPDES TXR040938
CITY OF CASTLE HILLS MS4, Castle Hills, TX: NPDES TXR040938 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
CITY OF CASTLE HILLS MS4, held by City of Castle Hills, holds NPDES permit TXR040938. EPA’s file records it issued April 3, 2026 and expiring August 14, 2029. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
What the register holds for CITY OF CASTLE HILLS MS4: its NPDES ID, its permit type and status, its dates, its address in Castle Hills, Texas. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR040938.
Identity
| Facility as filed | CITY OF CASTLE HILLS MS4 |
|---|---|
| Permittee as filed | City of Castle Hills |
| NPDES ID | TXR040938 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | April 3, 2026 |
| Expiration date | August 14, 2029 |
| Issuing agency | TCEQ |
| Address | Castle Hills, TX 73213 |
| Subwatershed | Olmos Creek-San Antonio River (HUC 121003010201) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES TXR040938.
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES TXR040938.
Inspections
EPA’s inspection file holds no inspection for NPDES TXR040938.
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 TXR040938.
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, TXR040938.
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 TXR040938 there.
CITY OF CASTLE HILLS MS4, Castle Hills, Texas: Coverage under a general permit TXR040938, held by City of Castle Hills; Effective; issued April 3, 2026, term to August 14, 2029, by TCEQ.
CITY OF CASTLE HILLS MS4 among its neighbors
EPA’s permit file holds 71 discharge permits in the Olmos Creek-San Antonio River subwatershed (HUC 121003010201), TXR040938 among them.
Other permits in the Olmos Creek-San Antonio River subwatershed (HUC 121003010201)
- 145 NAVARRO, San Antonio: TXG830853, minor permit, permit term to September 12, 2028
- 2020 FOX TECH CAMPUS ADDITIONS & RENOVATIONS, San Antonio: TXR1561SZ, minor permit, discharging to SAN PEDRO CREEK, permit term to March 4, 2028
- 410 PROBANDT, San Antonio: TXR1571UY, minor permit, discharging to UPPER SAN ANTONIO RIVER, permit term to March 4, 2028
- 410 PROBANDT, San Antonio: TXR1596UB, minor permit, discharging to SAN ANTONIO RIVER, permit term to March 4, 2028
- 440 QUARRY, San Antonio: TXR1544SE, minor permit, discharging to SALADO CREEK, permit term to March 4, 2028
- 440 QUARRY IMPROVEMENTS, San Antonio: TXR1572SI, minor permit, discharging to SALADO CREEK 1910F, permit term to March 4, 2028
- ACCURATE LITHO & PRINTING, San Antonio: TXRNECK28, minor permit, permit term to August 13, 2026
- AGGREGATE HAULERS SAN ANTONIO, San Antonio: TXR05CY49, minor permit, permit term to August 13, 2021
- AHISD JUNIOR SCHOOL ADDITIONS AND RENOVATIONS, San Antonio: TXR1594YM, minor permit, discharging to OLMOS CREEK, permit term to March 4, 2028
- ALAMO EDUCATION CENTER, San Antonio: TXR1584SE, minor permit, discharging to SAN ANTONIO RIVER, permit term to March 4, 2028
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.