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Clean Water Act discharge permit · NPDES TXR1503VZ

JENSEN DRIVE DEMO, Houston, TX: NPDES TXR1503VZ discharge permit, effluent exceedances, inspections, penalties

JENSEN DRIVE DEMO, held by Grant Mackay Company, Inc., holds NPDES permit TXR1503VZ, which discharges to Halls Bayou. EPA’s file records it issued September 25, 2025 and expiring March 4, 2028.

JENSEN DRIVE DEMO, Houston, Texas: Coverage under a general permit TXR1503VZ, held by Grant Mackay Company, Inc.; Construction stormwater; Effective; issued September 25, 2025, term to March 4, 2028; discharges to HALLS BAYOU.

Texas holds 23,986 Construction stormwater coverages of this permit type in EPA’s file; 16,071 were issued before TXR1503VZ. Grant Mackay Company, Inc. holds 7 permits in Texas.

Other permits held by Grant Mackay Company, Inc.

Coverages issued nearest TXR1503VZ

JENSEN DRIVE DEMO among its neighbors

EPA’s permit file holds 249 discharge permits in the Halls Bayou subwatershed (HUC 120401040604), TXR1503VZ among them. Its county holds 4,455, 195 of them major permits; TXR1503VZ is a minor permit.

Other permits in the Halls Bayou subwatershed (HUC 120401040604)

What the register holds for JENSEN DRIVE DEMO: its NPDES ID, its permit type and status, its dates, its address in Houston, Texas, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR1503VZ.

Identity

Facility as filedJENSEN DRIVE DEMO
Permittee as filedGrant Mackay Company, Inc.
NPDES IDTXR1503VZ
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedSeptember 25, 2025
Expiration dateMarch 4, 2028
AddressHouston, TX 77093
Receiving waterHALLS BAYOU
SubwatershedHalls Bayou (HUC 120401040604)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES TXR1503VZ.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES TXR1503VZ.

Inspections

EPA’s inspection file holds no inspection for NPDES TXR1503VZ.

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 TXR1503VZ.

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, TXR1503VZ.

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Nearby on the register

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

What this page shows

JENSEN DRIVE DEMO is one of 2,031 storm water construction permits on EPA's NPDES register in Harris County. Of all 2,022 storm water construction permits in Harris County, including this one, 62.6% have an earlier issue date than this permit. The Halls Bayou subwatershed contains 249 NPDES permits, including this one.