Aqua Rare Metals (ARM) has launched a new critical raw materials (CRM) sampling program focused on produced water from mature oil and gas fields across Europe. The initiative represents a key step in ARM’s strategy to identify sustainable, local sources of lithium and other CRMs that are essential for the energy transition.
Unlocking value from produced water
Produced water has long been managed as an operational by-product of oil and gas production. Increasingly, however, it is recognized as a potential resource stream containing dissolved critical raw materials.
ARM’s program targets fields where existing infrastructure, stable operations, and extensive subsurface data provide a strong basis for evaluation.
The sampling will focus on identifying elements such as:
- Lithium
- Boron
- Strontium
- Bromine
- Other strategic trace elements
Data-driven and stepwise approach
The program combines field sampling with ISO-certified laboratory analysis to generate high-quality geochemical data. These results will be integrated with reservoir and production data to identify CRM anomalies and assess technical and commercial potential.
ARM’s methodology follows a low-risk, stepwise development model:
- Initial screening and sampling
- Laboratory analysis and geochemical benchmarking
- Technology screening, including Direct Lithium Extraction (DLE)
- Prioritization of candidates for potential pilot testing
Only projects that meet defined technical and economic criteria will advance to the next phase.
Leveraging existing infrastructure
By working with mature fields and existing water-handling systems, ARM aims to minimize environmental footprint and capital intensity. CRM recovery can be integrated into ongoing operations, creating new revenue streams while supporting circular resource use.
This approach aligns closely with European policy objectives, including the EU Critical Raw Materials Act, which emphasizes secure and sustainable domestic supply.
Looking ahead
Results from the sampling program will inform ARM’s project pipeline and support collaboration with operators, technology providers, and partners. As demand for critical raw materials continues to grow, ARM’s work highlights how existing energy infrastructure can play a constructive role in Europe’s energy transition.
Further updates will be shared as the program progresses.

