In its final judgement, the Rotterdam court dismissed all claims against Norsk Hydro ASA and its Dutch entities in the case filed by Brazilian Cainquiama and nine individuals in 2021.

The case was dismissed by the Rotterdam court on both legal and factual grounds.

During the proceedings, Hydro requested the court to dismiss the case on the basis of evidence, supported by expert reports based on extensive empirical data, showing the allegations made by the plaintiffs are unfounded.​

Cainquiama, an association based in Barcarena, Brazil, and nine Brazilian individuals, filed in 2021 a lawsuit in the Netherlands against Hydro's Dutch entities and Norsk Hydro ASA. The plaintiffs were seeking compensation for alleged health and financial damages resulting from industrial activities in the municipality of Barcarena.​

In the ruling September 24, 2025, the Dutch court dismissed all claims against Norsk Hydro ASA and its Dutch entities.

KeyFacts Energy Industry Directory: Hydro