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Clean Water Act discharge permit · NPDES TX0135852

SHELDON WWTP, Houston, TX: NPDES TX0135852 discharge permit, effluent exceedances, inspections, penalties

SHELDON WWTP, held by UNDINE DEVELOPMENT LLC, holds NPDES permit TX0135852, which discharges to Unnamed Drainage Ditch; Carpenters Bayou. EPA’s file records it issued April 18, 2019 and expiring April 18, 2024. 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 SHELDON WWTP: 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 TX0135852.

Identity

Facility as filedSHELDON WWTP
Permittee as filedUNDINE DEVELOPMENT LLC
NPDES IDTX0135852
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedApril 18, 2019
Expiration dateApril 18, 2024
AddressHouston, TX 77044
Receiving waterUNNAMED DRAINAGE DITCH; CARPENTERS BAYOU
SubwatershedCarpenters Bayou (HUC 120401040702)

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 TX0135852.

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 TX0135852.

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, TX0135852.

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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 TX0135852 there.

Nearby on the register

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

What this page shows

SHELDON WWTP, an individual permit for UNDINE DEVELOPMENT LLC in Houston, Texas, was issued on April 18, 2019, and 78.6% of the 429 individual permits in Harris County have an earlier issue date. The permit is one of 488 individual permits on EPA's NPDES register in Harris County, where 73.0% of those permits have a violation on file. It is also one of 112 NPDES permits in the Carpenters Bayou subwatershed, and it has 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.