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Clean Water Act discharge permit · NPDES TXR1576SM

LEANDER UNION, Leander, TX: NPDES TXR1576SM discharge permit, effluent exceedances, inspections, penalties

LEANDER UNION, held by NAVCON GROUP LLC, holds NPDES permit TXR1576SM, which discharges to Block House Creek. EPA’s file records it issued October 21, 2024 and expiring March 4, 2028.

LEANDER UNION, Leander, Texas: Coverage under a general permit TXR1576SM, held by NAVCON GROUP LLC; Construction stormwater; Effective; issued October 21, 2024, term to March 4, 2028; discharges to BLOCK HOUSE CREEK.

Texas holds 23,986 Construction stormwater coverages of this permit type in EPA’s file; 9,730 were issued before TXR1576SM. NAVCON GROUP LLC holds 10 permits in Texas.

Other permits held by NAVCON GROUP LLC

Coverages issued nearest TXR1576SM

LEANDER UNION among its neighbors

EPA’s permit file holds 159 discharge permits in the South Brushy Creek-Brushy Creek subwatershed (HUC 120702050401), TXR1576SM among them. Its county holds 965, 17 of them major permits; TXR1576SM is a minor permit.

Other permits in the South Brushy Creek-Brushy Creek subwatershed (HUC 120702050401)

What the register holds for LEANDER UNION: its NPDES ID, its permit type and status, its dates, its address in Leander, Texas, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR1576SM.

Identity

Facility as filedLEANDER UNION
Permittee as filedNAVCON GROUP LLC
NPDES IDTXR1576SM
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedOctober 21, 2024
Expiration dateMarch 4, 2028
AddressLeander, TX 78641
Receiving waterBLOCK HOUSE CREEK
SubwatershedSouth Brushy Creek-Brushy Creek (HUC 120702050401)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES TXR1576SM.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES TXR1576SM.

Inspections

EPA’s inspection file holds no inspection for NPDES TXR1576SM.

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 TXR1576SM.

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, TXR1576SM.

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  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
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Nearby on the register

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

What this page shows

LEANDER UNION is one of 755 storm water construction permits on EPA's NPDES register in Williamson County. Of those 755 permits, 28.1% have an earlier issue date than this permit. LEANDER UNION is also one of 159 NPDES permits in the South Brushy Creek-Brushy Creek subwatershed.