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Clean Water Act discharge permit · NPDES TXR1555PO

SIENNA SECTION 63, Missouri City, TX: NPDES TXR1555PO discharge permit, effluent exceedances, inspections, penalties

SIENNA SECTION 63, held by Northtex Construction, LLC, holds NPDES permit TXR1555PO, which discharges to Cow Bayou. EPA’s file records it issued January 16, 2024 and expiring March 4, 2028.

SIENNA SECTION 63, Missouri City, Texas: Coverage under a general permit TXR1555PO, held by Northtex Construction, LLC; Construction stormwater; Effective; issued January 16, 2024, term to March 4, 2028; discharges to COW BAYOU.

Texas holds 23,986 Construction stormwater coverages of this permit type in EPA’s file; 5,481 were issued before TXR1555PO. Northtex Construction, LLC holds 173 permits in Texas.

Other permits held by Northtex Construction, LLC

Coverages issued nearest TXR1555PO

SIENNA SECTION 63 among its neighbors

EPA’s permit file holds 149 discharge permits in the Middle Oyster Creek subwatershed (HUC 120402050200), TXR1555PO among them. Its county holds 1,100, 41 of them major permits; TXR1555PO is a minor permit.

Other permits in the Middle Oyster Creek subwatershed (HUC 120402050200)

What the register holds for SIENNA SECTION 63: its NPDES ID, its permit type and status, its dates, its address in Missouri City, Texas, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR1555PO.

Identity

Facility as filedSIENNA SECTION 63
Permittee as filedNorthtex Construction, LLC
NPDES IDTXR1555PO
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJanuary 16, 2024
Expiration dateMarch 4, 2028
AddressMissouri City, TX 77459
Receiving waterCOW BAYOU
SubwatershedMiddle Oyster Creek (HUC 120402050200)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES TXR1555PO.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES TXR1555PO.

Inspections

EPA’s inspection file holds no inspection for NPDES TXR1555PO.

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 TXR1555PO.

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, TXR1555PO.

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Nearby on the register

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

What this page shows

SIENNA SECTION 63, a Storm Water Construction permit in Missouri City, Fort Bend County, Texas, is one of 716 storm water construction permits on EPA's NPDES register in that county, this one included. Among those 716 permits, 0.4% have a violation on file, while this permit has none of the records recorded for pollutants under a numeric limit or effluent exceedances.