Century Lithium Receives Water Pollution Control Permit for Demonstration Plant

Century Lithium secures key water permit but must clear further hurdles before construction.

What the company is saying

Century Lithium Corp. highlights the issuance of a Water Pollution Control Permit (WPCP) for its Tonopah Airport Lithium Processing Demonstration Facility, calling this a key step toward reconstructing and upgrading the plant. The company frames the permit as a major milestone, emphasizing that the facility supports its 100%-owned Angel Island Lithium Project in Nevada, USA. President and CEO Bill Willoughby is quoted to reinforce the technical progress and the company's patent-pending process for producing battery-grade lithium carbonate. The announcement details ongoing and future R&D, including rare earth element (REE) recovery and process improvements, but is clear that these are contingent on further funding and approvals. The tone is confident but acknowledges that FAA approval and completion of pre-operational requirements are still pending. The release also notes that metallurgical testing continues independently at the Butte, Montana laboratory.

What the data suggests

The WPCP was issued on October 28, 2026 as permit NEV2026117 to Cypress Holdings (Nevada), Ltd, authorizing construction, operation, and closure of the Tonopah Demonstration Plant. The permit covers the process building and two double-lined tailings ponds with leak detection, but requires hydrostatic testing and certification of the ponds, submission of updated operating plans, a notice of intent to operate, and a facility inspection before operations can begin. These pre-operational steps are underway but not yet complete. The company has already purchased a steel building and completed the concrete foundation slab, which has been sealed with a chemical-resistant coating. FAA environmental review is nearing completion, but construction cannot start until FAA approval is received. Test work on a 500-tonne bulk sample from Angel Island claystone demonstrated recovery of REEs, with the sample assaying 0.024% total rare earth oxides, comprising 75% light REEs and 25% yttrium and heavy REEs. The company is transparent that these results are specific to the bulk sample and not representative of the entire deposit. No financial figures, resource estimates, or production timelines are disclosed in this update.

Analysis

The announcement is generally positive, highlighting the receipt of a key Water Pollution Control Permit and progress on pre-operational requirements for the Tonopah Airport Demonstration Facility. Several realised milestones are disclosed, such as permit issuance, completion of the foundation slab, and purchase of the steel building. However, a significant portion of the claims are forward-looking, including the need for FAA approval before construction can begin, the planned metallurgical testing, and the potential for rare earth element recovery. The benefits from these activities are not immediate, as construction and testing are contingent on further approvals and operational steps. The capital intensity flag is set because the company has already invested in infrastructure (steel building, foundation) but has not yet commenced operations or demonstrated earnings impact. The language is somewhat promotional regarding future testing and process improvements, but the technical disclosures are specific and transparent about current limitations. Overall, the gap between narrative and evidence is moderate: the company is progressing, but most benefits remain prospective.

Risk flags

• ●The project remains dependent on FAA approval for construction, which introduces regulatory risk and potential for delay. FAA review is described as 'nearing completion,' but no firm timeline or guarantee of approval is given.
• ●Pre-operational requirements, including hydrostatic testing and certification of tailings ponds, updated operating plans, and a facility inspection, must be completed before operations can begin. Any failure or delay in these steps could push back the project timeline.
• ●The technical results for rare earth element recovery are based on a single 500-tonne bulk sample with an assay of 0.024% TREO, and the company explicitly states these results are not representative of the entire Angel Island deposit. This limits confidence in the scalability or economic significance of REE recovery.
• ●No financial data, funding status, or capital expenditure details are disclosed, leaving uncertainty about the company's ability to finance construction, commissioning, and planned R&D initiatives. This raises questions about the project's financial runway and execution capacity.

Bottom line

Century Lithium has achieved a critical permitting milestone for its Tonopah Demonstration Plant, but construction and operations remain contingent on FAA approval and completion of pre-operational requirements. The company has made tangible progress by purchasing infrastructure and advancing technical work, yet the most material benefits—including production, revenue, and large-scale REE recovery—are still prospective. The technical data disclosed are specific and transparent, but limited in scope and not representative of the full deposit. Investors should watch for FAA approval, completion of pre-operational steps, and results from larger-scale metallurgical testing as the next catalysts. The most important takeaway is that while the permitting win is real, execution and funding risks remain before value can be realized.

Announcement summary

(TSXV:LCE) (OTCQX:CYDVF) (FRANKFURT:C1Z) Century Lithium Corp. announced that the Nevada Division of Environmental Protection (NDEP) has issued a Water Pollution Control Permit (WPCP) for the company's Tonopah Airport Lithium Processing Demonstration Facility in Nye County, Nevada. The WPCP, issued on October 28, 2026 as permit NEV2026117 to wholly owned subsidiary Cypress Holdings (Nevada), Ltd, authorizes construction, operation, and closure of the facility, covering the process building and two existing double-lined tailings ponds with leak detection. Before operations can begin, the WPCP requires hydrostatic testing and certification of the two ponds' liner and leak detection systems, which is currently underway. Additional pre-operational requirements include submitting updated operating plans, a notice of intent to operate, and completing an NDEP facility inspection. Cypress also holds a Class II General Air Quality Operating Permit from NDEP's Bureau of Air Pollution Control for the Tonopah Airport site. The Demonstration Plant is located on an industrial site at Tonopah Airport, leased from Nye County, and requires Federal Aviation Administration (FAA) review and approval for new construction and non-aviation use; the FAA's environmental review is nearing completion and the company is awaiting approval to construct the process building. Century Lithium has purchased a steel building for the Demonstration Plant, with engineered modifications, and completed the concrete foundation slab, which has been sealed with a chemical-resistant coating. Construction will begin upon receipt of FAA approval. The Demonstration Plant will be used to complete structured metallurgical testing recommended in the 2026 Feasibility Study, including full test runs on claystone zones 1 and 2 and evaluation of improvements to leaching, direct lithium extraction, lithium carbonate, and lithium hydroxide production. The 2026 Feasibility Study also recommended further evaluation of the economic potential of rare earth element (REE) recovery at Angel Island. Test work on primary leach solutions from a 500-tonne bulk sample of Angel Island claystone demonstrated recovery of REEs, including dysprosium, gadolinium, neodymium, and praseodymium, without adversely affecting lithium recovery. The bulk sample assayed 0.024% total rare earth oxides (TREO), comprising 75% light REEs and 25% yttrium and heavy REEs. These results are representative of the bulk sample only and are not assumed to represent the Angel Island deposit as a whole. REE recovery is not included in the 2026 Feasibility Study, but the Demonstration Plant will be used to test REE recovery at a larger scale. Metallurgical testing for Angel Island continues at the company's laboratory in Butte, Montana, including research into an enhanced chlor-alkali-based process that could reduce the project's overall power requirements. The scientific and technical information in the release was reviewed and approved by Todd S. Fayram, MMSA-QP, Chief Technical Officer of Century Lithium. Century Lithium's Angel Island Lithium Project is 100%-owned and located in Esmeralda County, Nevada, USA.

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