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Clean Water Act discharge permit · NPDES TXR05DB79

TRINITY RIVER AUTHORITY MOUNTAIN CREEK REGIONAL WWTP, Midlothian, TX: NPDES TXR05DB79 discharge permit, effluent exceedances, inspections, penalties

TRINITY RIVER AUTHORITY MOUNTAIN CREEK REGIONAL WWTP, held by Trinity River Authority Of Texas, holds NPDES permit TXR05DB79. EPA’s file records it issued November 10, 2021 and expiring August 13, 2026. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for TRINITY RIVER AUTHORITY MOUNTAIN CREEK REGIONAL WWTP: its NPDES ID, its permit type and status, its dates, its address in Midlothian, Texas, and 13 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR05DB79.

Identity

Facility as filedTRINITY RIVER AUTHORITY MOUNTAIN CREEK REGIONAL WWTP
Permittee as filedTrinity River Authority Of Texas
NPDES IDTXR05DB79
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
ProgramIndustrial stormwater
IssuedNovember 10, 2021
Expiration dateAugust 13, 2026
AddressMidlothian, TX 76065
SubwatershedSoap Creek (HUC 120301020602)

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

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
BOD, 5-day, 20 deg. C100
Arsenic, total [as As]100
Barium, total [as Ba]100
Cadmium, total [as Cd]100
Chromium, total [as Cr]100
Copper, total [as Cu]100
Lead, total [as Pb]100
Manganese, total [as Mn]100
Nickel, total [as Ni]100
Silver, total [as Ag]100
Zinc, total [as Zn]100
Selenium, total [as Se]100
Mercury, total [as Hg]100

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES TXR05DB79.

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 TXR05DB79.

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, TXR05DB79.

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  • One state — $4,990/year
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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 TXR05DB79 there.

Nearby on the register

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