The fast-track approval of the new General Water Law and the corresponding amendments to the National Water Law marks a structural turning point for the mining industry in Mexico. Under this new framework, water is no longer treated as a tradable corporate asset but is consolidated- without interpretive margin -as a public resource under strict State stewardship. For a sector that is fundamentally dependent on stable and continuous water access, the reform reshapes the operational viability of existing projects, disrupts long-standing corporate structures, and materially alters the risk calculus for new investments. Water management ceases to be an administrative requirement and becomes a core business-continuity determinant and, for the first time, a direct source of criminal exposure.
One of the most disruptive elements of the reform is the prohibition on transferring water concessions as standalone assets. For decades, mining companies relied on the secondary water-rights market to secure volumes for exploration and development, strengthen processing plants, or accelerate project deployment by acquiring land parcels with existing wells. The reform dismantles that model. Concessions may now only be transferred jointly with the land to which they are legally attached, and the transfer is not effective until Conagua reissues the title in favor of the buyer. What appears at first glance to be a procedural adjustment effectively eliminates the ability to acquire water as an independent strategic resource, placing additional strain on the planning of mine expansions, pit development, ramp construction, and metallurgical scaling that depend on predictable increases in water availability.
Although the reform introduces an expedited mechanism obligating Conagua to reissue titles within 20 business days and exempts the process from the annual water-availability analysis, this administrative efficiency does not mitigate operational risk for the mining sector. Mining operations rely on uninterrupted water supply for extraction, processing, tailings management, and dust control. Any delay in title reissuance risks interrupting critical drilling sequences, limiting pumping capacity, disrupting tailings-dam operations, or compromising metallurgical consistency. The agricultural exception negotiated in Congress does not benefit mining operations: water concessioned for agricultural use cannot be converted to industrial or mining use without a full authorization process.
Equally consequential is the elimination of the mechanism that previously allowed companies to supply water to third parties via a simple notice. This change directly impacts the corporate architecture of mining groups, where it is common for a single entity to hold water rights and supply processing plants, workshops, auxiliary units, satellite operations, contractors, or even nearby communities under social-responsibility arrangements. Under the new law, such practices are no longer compliant. The regulator adopts a rigid interpretation: each entity that consumes water must hold the corresponding title issued in its own name. The concept of economic unity at the corporate-group level is disregarded. Internal supply across related entities may now be interpreted as an illegal transfer or exploitation without title, generating both administrative and criminal contingencies.
The inclusion of a dedicated chapter on Crimes Against National Waters fundamentally alters the compliance standard expected of mining operators. Conduct historically treated as administrative -operating above the authorized volume, modifying extraction points, interconnecting wells without authorization, changing the use of water for mining purposes without formal revalidation, or supplying water to third parties- will now be prosecuted ex officio. Criminal penalties range from three months to fourteen years of imprisonment. Water-use compliance is no longer a matter of record-keeping; it becomes a frontline element of criminal-risk prevention, dependent on documented physical traceability between titles, infrastructure, and actual consumption.
Additionally, the creation of the Public Water Registry, which expressly recognizes the historical rights of Indigenous and Afro-Mexican communities, elevates the level of complexity in territorial due diligence. Mining projects located in or near territories associated with recognized historical rights will face reinforced consultation obligations and intensified environmental and social scrutiny. This factor will influence investor risk assessments and financing decisions, particularly for greenfield projects.
Against this backdrop, mining companies must respond promptly. Immediate steps include conducting validity and multi-year traceability audits to confirm that real-world use fully aligns with concession terms, anticipating inspections and preventing revocation or criminal interpretation. Companies must restructure internal ownership of water rights so that each operating entity becomes the direct holder of its consumption volumes. Finally, CAPEX dedicated to water efficiency, recirculation, treatment, and volumetric monitoring must be reframed, not as operational upgrades but as essential regulatory-shielding investments designed to mitigate the risk of volume reductions based on “excessive concentration” criteria.
The reform represents a comprehensive redesign of the regulatory landscape for the mining industry. Anticipation, technical-legal restructuring, and robust traceability documentation will be decisive in maintaining operational continuity and minimizing high-impact regulatory and criminal exposure.
For inquiries regarding this Alert, please contact:
Email: oaguilar@pcga.mx
