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Clean Water Act discharge permit · NPDES TXRMW0200

WILLIAMSON COUNTY MUD 19H MS4, Austin, TX: NPDES TXRMW0200 discharge permit, effluent exceedances, inspections, penalties

WILLIAMSON COUNTY MUD 19H MS4, held by Williamson County MUD 19H, holds NPDES permit TXRMW0200. EPA’s file records it issued September 11, 2026 and expiring August 14, 2029. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for WILLIAMSON COUNTY MUD 19H MS4: its NPDES ID, its permit type and status, its dates, its address in Austin, Texas. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXRMW0200.

Identity

Facility as filedWILLIAMSON COUNTY MUD 19H MS4
Permittee as filedWilliamson County MUD 19H
NPDES IDTXRMW0200
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedSeptember 11, 2026
Expiration dateAugust 14, 2029
Issuing agencyTCEQ
AddressAustin, TX 78701
SubwatershedSmith Branch-San Gabriel River (HUC 120702050501)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES TXRMW0200.

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES TXRMW0200.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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, TXRMW0200.

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How we handle your data → Privacy

EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID TXRMW0200 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

The WILLIAMSON COUNTY MUD 19H MS4 permit, held by Williamson County MUD 19H in Austin, Texas, is one of 31 general permit coverages in Austin on EPA's NPDES register, and 3.2% of those 31 coverages have a violation on file. Among the 56 NPDES permits in the Smith Branch-San Gabriel River subwatershed, this permit is one of the peers in that watershed. The permit also records zero pollutants under a numeric limit and zero pollutants with an effluent exceedance.