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Clean Water Act discharge permit · NPDES TXR040773

HIGHLANDS AT MAYFIELD RANCH MUD MS4, Austin, TX: NPDES TXR040773 discharge permit, effluent exceedances, inspections, penalties

HIGHLANDS AT MAYFIELD RANCH MUD MS4, held by Highlands at Mayfield Ranch Municipal Utility District, holds NPDES permit TXR040773. EPA’s file records it issued July 7, 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 HIGHLANDS AT MAYFIELD RANCH MUD 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 TXR040773.

Identity

Facility as filedHIGHLANDS AT MAYFIELD RANCH MUD MS4
Permittee as filedHighlands at Mayfield Ranch Municipal Utility District
NPDES IDTXR040773
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJuly 7, 2026
Expiration dateAugust 14, 2029
Issuing agencyTCEQ
AddressAustin, TX 78701
SubwatershedTown Lake-Colorado River (HUC 120902050306)

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 TXR040773.

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 TXR040773.

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

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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 TXR040773 there.

Nearby on the register

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

What this page shows

HIGHLANDS AT MAYFIELD RANCH MUD MS4 is one of 45 general permit coverages on EPA's NPDES register in Travis County. Of all 43 general permit coverages in Travis County, 95.3% have an earlier issue date than this permit. The permit has no pollutants under a numeric limit and no pollutants with an effluent exceedance.