Clean Water Act discharge permit · NPDES TXR1516UX
MISTY VALLEY, Cedar Park, TX: NPDES TXR1516UX discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MISTY VALLEY, held by CORNERSTONE SITE SERVICES, LLC, holds NPDES permit TXR1516UX, which discharges to Big Sandy Creek. EPA’s file records it issued June 12, 2025 and expiring March 4, 2028. 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 MISTY VALLEY: its NPDES ID, its permit type and status, its dates, its address in Cedar Park, Texas, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR1516UX.
Identity
| Facility as filed | MISTY VALLEY |
|---|---|
| Permittee as filed | CORNERSTONE SITE SERVICES, LLC |
| NPDES ID | TXR1516UX |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Construction stormwater |
| Issued | June 12, 2025 |
| Expiration date | March 4, 2028 |
| Address | Cedar Park, TX 78613 |
| Receiving water | BIG SANDY CREEK |
| Subwatershed | Big Sandy Creek (HUC 120902050205) |
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 TXR1516UX.
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 TXR1516UX.
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, TXR1516UX.
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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 TXR1516UX there.
Nearby on the register
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- Every permit record in Cedar Park, A to Z
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- Every permit record in Texas, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.