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Clean Water Act discharge permit · NPDES TXR05EU90

TEXAS OIL TOOLS, Conroe, TX: NPDES TXR05EU90 discharge permit, effluent exceedances, inspections, penalties

TEXAS OIL TOOLS, held by National Oilwell Varco, L.P., holds NPDES permit TXR05EU90. EPA’s file records it issued April 1, 2021 and expiring August 13, 2021.

TEXAS OIL TOOLS, Conroe, Texas: Coverage under a general permit TXR05EU90, held by National Oilwell Varco, L.P.; Industrial stormwater; Administratively continued (past its expiration date and still in force until reissued); issued April 1, 2021, term to August 13, 2021.

Texas holds 8,480 Industrial stormwater coverages of this permit type in EPA’s file; 245 were issued before TXR05EU90. National Oilwell Varco, L.P. holds 18 permits in Texas.

Other permits held by National Oilwell Varco, L.P.

Coverages issued nearest TXR05EU90

TEXAS OIL TOOLS among its neighbors

EPA’s permit file holds 120 discharge permits in the Stewarts Creek-West Fork San Jacinto River subwatershed (HUC 120401010401), TXR05EU90 among them.

Other permits in the Stewarts Creek-West Fork San Jacinto River subwatershed (HUC 120401010401)

What the register holds for TEXAS OIL TOOLS: its NPDES ID, its permit type and status, its dates, its address in Conroe, Texas. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR05EU90.

Identity

Facility as filedTEXAS OIL TOOLS
Permittee as filedNational Oilwell Varco, L.P.
NPDES IDTXR05EU90
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
IssuedApril 1, 2021
Expiration dateAugust 13, 2021
AddressConroe, TX 77303
SubwatershedStewarts Creek-West Fork San Jacinto River (HUC 120401010401)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES TXR05EU90.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES TXR05EU90.

Inspections

EPA’s inspection file holds no inspection for NPDES TXR05EU90.

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 TXR05EU90.

Watch this permit

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Nearby on the register

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

What this page shows

TEXAS OIL TOOLS, a Storm Water Industrial permit in Conroe, is one of 22 such permits on EPA's NPDES register in that city, and it sits among 120 NPDES permits in the Stewarts Creek-West Fork San Jacinto River subwatershed. Of the 22 Conroe storm water industrial permits, 9.1% have a violation on file, and the permit records no pollutants under a numeric limit or effluent exceedances.