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Mexico Federal Environmental Impact Assessment Regulation

Mexico Federal Environmental Impact Assessment Regulation: Requires authorisation for listed projects and defines EIA content, procedures, and timelines

Maílis Carrilho
Written by Maílis Carrilho
Updated on February 19th, 2026

Summary

Mexico’s federal EIA regulation under LGEEPA requires environmental authorisation for listed projects under federal jurisdiction and defines the content and procedure for MIAs, information requests, public participation, and binding approval conditions. Developers must determine applicability, prepare complete technical submissions, respond promptly to authority requests, and implement mitigation and monitoring requirements. Non-compliance risks sanctions, suspension, and permit loss. Strong permit change management and evidence-quality documentation reduce delay and enforcement risk.

Details

Jurisdictions
  • Mexico
Mandatory for

Mandatory for projects and activities within scope under federal competence.

Exemptions

Exceptions include projects outside listed categories, activities under state jurisdiction, and cases where impacts are not significant under criteria defined by law and regulation. Determinations should be documented to mitigate enforcement disputes.

Deep dive

2 min read
Published Feb 19, 2026

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What’s Required

For projects under federal jurisdiction, the EIA regulation imposes a structured compliance pathway:

  • Determine whether EIA authorisation is required: Developers must assess whether the project/activity is within the regulated list and federal competence, triggering submission of a Manifestación de Impacto Ambiental (MIA) in the required modality.

  • Prepare the MIA: The MIA must include project description, baseline conditions, impact identification, mitigation measures, monitoring plans, and risk management components as required by the regulation and guidance. Developers must ensure completeness and internal consistency.

  • Public consultation and information management: The regulation provides for public participation mechanisms in defined cases, requiring developers to manage disclosures and respond to requests or clarifications via the competent authority.

  • Respond to information requests: Authorities can request additional information; compliance requires timely responses with evidence-quality technical documentation and updated impact analyses where needed.

  • Comply with authorisation conditions: Once granted, EIA approvals contain binding conditions. Developers must implement mitigation, monitoring, environmental management plans, and reporting commitments within specified timelines. Non-compliance can jeopardise project operation.

  • Change management: Material project changes may require amendment procedures or new submissions, depending on the nature of modifications. Firms should implement internal controls for “permit change triggers.”

Important Deadlines

  • Regulation publication and maintenance: The EIA regulation is a federal instrument maintained through official repositories, with compliance timelines embedded in procedural steps and resolution deadlines.

  • Project-specific milestones: Deadlines for submission, response to information requests, and compliance with conditions are set in the authority’s procedures and the approval resolution.

Current Status

  • In force as the central procedural regulation for federal EIA authorisations.

Penalties for Non-Compliance

Non-compliance can lead to:

  • administrative sanctions, suspension, or closure of non-authorised activities,

  • cancellation or revocation of approvals where conditions are breached,

  • remediation obligations and increased enforcement scrutiny.

Examples of Known Violations

  • project initiation before authorization,

  • incomplete MIAs (missing baseline data, cumulative impacts, alternatives analysis),

  • failure to implement mitigation and monitoring conditions,

  • unreported project modifications that change the impact profile.

Resources


Maílis Carrilho
Added by:
Maílis Carrilho
Sustainability Research Analyst
Maílis Carrilho is a Sustainability Research Analyst (Intern) at Net Zero Compare, contributing research and analysis on climate tech, carbon policies, and sustainable solutions. She supports the team in developing fact-based content and insights to help companies and readers navigate the evolving sustainability landscape.
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Added on Feb 19, 2026 by Maílis Carrilho ·