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WTO notification · TBT

MexicoProposed measure, may since have been adopted

Proposed measure: Mexico

Draft Official Mexican Standard PROY-NOM-024-ASEA-2025, Management of produced water and/or return fluid associated with the Exploration and Extraction of Hydrocarbons – Industrial Safety, Operational Safety and environmental protection specifications (cancels and replaces the Official Mexican Standard NOM-143-SEMARNAT-2003, Which establishes the environmental specifications for the management of water associated with hydrocarbons)

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Proyecto de Norma Oficial Mexicana PROY-NOM-024-ASEA-2025, Manejo de Agua producida y/o Fluido de retorno asociado a la Exploración y Extracción de Hidrocarburos – Especificaciones de Seguridad Industrial, Seguridad Operativa y protección al medio ambiente (cancela y sustituye la Norma Oficial Mexicana NOM-143-SEMARNAT-2003, Que establece las especificaciones ambientales para el manejo de agua congénita asociada a hidrocarburos)

Mexico notified this proposed TBT measure to the WTO on 7 January 2026. The comment period closed on 8 March 2026.

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Source: WTO ePing (opens in a new tab). Summaries by Expodite, which is independent of the WTO.

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At a glance

Products

Applies throughout the national territory and areas where the Nation exercises its sovereignty and jurisdiction, it is of general and mandatory observance for the Regulated entities that carry out the management of produced water and/or flowback fluid generated in the activities of Exploration and Extraction of Hydrocarbons

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Aplica en todo el territorio nacional y zonas donde la Nación ejerza su soberanía y jurisdicción, es de observancia general y obligatoria para los Regulados que realicen el manejo de Agua producida y/o Fluido de retorno generados en las actividades de Exploración y Extracción de Hidrocarburos

Notifying member
Mexico
Status
Proposed measure, may since have been adoptedNotified as a draft on 7 January 2026. Check WTO ePing or Mexico for its current status.
Objectives
  • Protection of human health or safety
  • Protection of the environment
Area
TBT: Technical product rulesTechnical barriers to trade
Notification type
Regular notification
Document symbol
G/TBT/N/MEX/553

Key dates

Distributed by the WTO
Comment deadline
Closed on 8 March 2026
Proposed adoption
To be determined
Proposed entry into force
To be determined

How to comment

The comment period closed on 8 March 2026. You can still raise concerns about the measure with your country's WTO TBT enquiry point, quoting the document symbol G/TBT/N/MEX/553; it can take them up with Mexico.

Find your country's enquiry point on WTO ePing (opens in a new tab)

What the notification says

The notified draft Mexican Official Standard establishes the technical criteria and specifications regarding industrial safety, operational safety and environmental protection that are to be met in the management of produced water and/or flowback fluid associated with the exploration and extraction of hydrocarbons. The Standard will apply throughout national territory and in areas where the Nation exercises sovereignty and jurisdiction, and is binding on regulated entities that manage produced water and/or flowback fluid generated in hydrocarbon exploration and extraction activities.The draft text addresses the following aspects:(a) Specifications and prior requirements for the management of produced water and/or flowback fluid.(b) Safety requirements for storage.(c) Considerations regarding the location and selection of storage tanks.(d) Inclusion of an inspection and monitoring programme for storage tanks and treatment systems.(e) Requirements for the design, selection and installation of treatment systems.(f) Considerations regarding transportation and movement by pipeline, tank car or tanker truck.(g) Maintenance, inspection and operating procedures for each system and part.(h) Guidelines for the management, reuse and discharge of waste water from the flowback fluid treatment process.(i) Detailed conformity assessment procedure for obtaining the annual compliance certificate.

Sources

Expodite writes its summary from the official record. The notification and the documents it notifies are on the WTO's own websites.

All updates from Mexico

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    Symbol: G/SPS/N/MEX/478Comments until 21 December 2026

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