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Clean Water Act discharge permit · NPDES TXR040523

CINCO SOUTHWEST MUD 1 MS4, Houston, TX: NPDES TXR040523 discharge permit, effluent exceedances, inspections, penalties

CINCO SOUTHWEST MUD 1 MS4, held by Cinco Southwest Municipal Utility District 1, holds NPDES permit TXR040523, which discharges to Little Prong Creek. EPA’s file records it issued September 6, 2023 and expiring January 23, 2024.

CINCO SOUTHWEST MUD 1 MS4, Houston, Texas: Coverage under a general permit TXR040523, held by Cinco Southwest Municipal Utility District 1; Small municipal storm sewer systems; Administratively continued (past its expiration date and still in force until reissued); issued September 6, 2023, term to January 23, 2024, by TCEQ; discharges to LITTLE PRONG CREEK.

Texas holds 199 Small municipal storm sewer systems coverages of this permit type in EPA’s file; 79 were issued before TXR040523. Cinco Southwest Municipal Utility District 1 holds 2 permits in Texas.

Other permits held by Cinco Southwest Municipal Utility District 1

Coverages issued nearest TXR040523

CINCO SOUTHWEST MUD 1 MS4 among its neighbors

EPA’s permit file holds 72 discharge permits in the Little Prong-Buffalo Bayou subwatershed (HUC 120401040103), TXR040523 among them. Its county holds 1,100, 41 of them major permits; TXR040523 is a minor permit.

Other permits in the Little Prong-Buffalo Bayou subwatershed (HUC 120401040103)

What the register holds for CINCO SOUTHWEST MUD 1 MS4: 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 TXR040523.

Identity

Facility as filedCINCO SOUTHWEST MUD 1 MS4
Permittee as filedCinco Southwest Municipal Utility District 1
NPDES IDTXR040523
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramSmall municipal storm sewer systems
IssuedSeptember 6, 2023
Expiration dateJanuary 23, 2024
Issuing agencyTCEQ
AddressHouston, TX 77027
Receiving waterLITTLE PRONG CREEK
SubwatershedLittle Prong-Buffalo Bayou (HUC 120401040103)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES TXR040523.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES TXR040523.

Inspections

EPA’s inspection file holds no inspection for NPDES TXR040523.

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 TXR040523.

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, TXR040523.

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Nearby on the register

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

What this page shows

The permit filed as CINCO SOUTHWEST MUD 1 MS4 is one of 45 Storm Water Small MS4s permits in Fort Bend County, and 2.2% of those 45 permits have a violation on file. Among the 72 NPDES permits in the Little Prong-Buffalo Bayou subwatershed, this one is included, and 15.6% of the 45 county storm water small MS4s permits carry an earlier issue date than this one. The permit has no pollutants under a numeric limit and no pollutants with an effluent exceedance.