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Clean Water Act discharge permit · NPDES TXR1508WP

CASCADES AT ONION CREEK PH 4, Austin, TX: NPDES TXR1508WP discharge permit, effluent exceedances, inspections, penalties

CASCADES AT ONION CREEK PH 4, held by Liberty Civil Construction, LLC, holds NPDES permit TXR1508WP, which discharges to Onion Creek. EPA’s file records it issued December 1, 2025 and expiring March 4, 2028.

CASCADES AT ONION CREEK PH 4, Austin, Texas: Coverage under a general permit TXR1508WP, held by Liberty Civil Construction, LLC; Construction stormwater; Effective; issued December 1, 2025, term to March 4, 2028; discharges to ONION CREEK.

Texas holds 23,986 Construction stormwater coverages of this permit type in EPA’s file; 17,308 were issued before TXR1508WP. Liberty Civil Construction, LLC holds 45 permits in Texas.

Other permits held by Liberty Civil Construction, LLC

Coverages issued nearest TXR1508WP

CASCADES AT ONION CREEK PH 4 among its neighbors

EPA’s permit file holds 40 discharge permits in the Slaughter Creek-Onion Creek subwatershed (HUC 120902050407), TXR1508WP among them. Its county holds 1,099, 15 of them major permits; TXR1508WP is a minor permit.

Other permits in the Slaughter Creek-Onion Creek subwatershed (HUC 120902050407)

What the register holds for CASCADES AT ONION CREEK PH 4: its NPDES ID, its permit type and status, its dates, its address in Austin, Texas, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR1508WP.

Identity

Facility as filedCASCADES AT ONION CREEK PH 4
Permittee as filedLiberty Civil Construction, LLC
NPDES IDTXR1508WP
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedDecember 1, 2025
Expiration dateMarch 4, 2028
AddressAustin, TX 78747
Receiving waterONION CREEK
SubwatershedSlaughter Creek-Onion Creek (HUC 120902050407)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES TXR1508WP.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES TXR1508WP.

Inspections

EPA’s inspection file holds no inspection for NPDES TXR1508WP.

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 TXR1508WP.

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, TXR1508WP.

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How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

The CASCADES AT ONION CREEK PH 4 storm water construction permit, held by Liberty Civil Construction, LLC, is one of 894 such permits in Travis County and one of 40 NPDES permits in the Slaughter Creek-Onion Creek subwatershed, and it has no pollutants under a numeric limit and no effluent exceedances on file. Of the 894 storm water construction permits in Travis County, 0.3% have a violation on file, and 66.4% of them were issued earlier than this one.