Italian water technology company De Nora has announced plans to acquire Singapore-based BW Water, a move that expands its capabilities in engineered water solutions and strengthens its position in high-growth sectors such as semiconductors, desalination, mining and industrial water reuse.
The acquisition brings together De Nora’s expertise in electrochemistry and water treatment technologies with BW Water’s process engineering, fabrication and turnkey project delivery capabilities. The combined business will offer end-to-end water and wastewater solutions spanning ultrapure water (UPW), industrial wastewater treatment and desalination systems.
The deal also strengthens De Nora’s presence in Asia, complementing its established footprint across Europe and the US.
As industries face mounting pressure to secure water supplies, improve resource efficiency and meet sustainability targets, the acquisition is expected to enhance the companies’ ability to deliver integrated solutions that address water scarcity, contamination and resource recovery challenges.
One area of focus is the recovery and reuse of critical materials from industrial waste streams, including tetramethylammonium hydroxide (TMAH), a chemical widely used in semiconductor manufacturing.
“The acquisition of BW Water is closely aligned with our long and midterm strategy,” said Paolo Dellachà, CEO of De Nora. “By integrating De Nora’s technology leadership with BW Water’s execution and process engineering capabilities, we strengthen our ability to deliver end-to-end solutions with speed and certainty. This also creates a powerful platform to accelerate innovation in circularity, enabling the full recovery and reuse of critical materials while driving sustainable growth across high-demand markets.”
Marwan Nesicolaci, CEO of De Nora Water Technologies, highlighted BW Water’s experience delivering complex projects for major industrial customers.
“BW Water has built a strong track record with tier-one customers and a team that delivers complex turnkey water and wastewater projects at scale,” he said. “By integrating these capabilities into our water technologies segment, we strengthen our ability to deliver fully integrated solutions with speed and reliability, while creating a platform to address the increasingly complex water needs of high-growth sectors such as semiconductors, data centres, and mining.”
The acquisition underscores continued consolidation across the global water sector, as technology providers seek broader capabilities and greater scale to serve increasingly complex industrial and municipal water challenges.

