rse expanding in u.s.
RSE is a leading UK provider of sustainable water treatment solutions, working to bring new technology to life and play a leading role in improving water quality across the globe. Through standard integrated product solutions, it aims to reduce lead times, assure factory quality and reduce lifecycle costs while offering a range of commercial models including temporary and rental solutions.
The firm was founded in Muir of Ord in the Scottish Highlands in 1982 and now employs more than 2,000 people across 17 sites. Over the last few years, RSE has enjoyed rapid growth, with revenue increasing from £61million ($82 million) in 2019 to £360million ($484 million) in 2025.
RSE’s commitment to the circular economy, carbon reduction and cutting-edge engineering, including modular off-site fabrication and digital innovation, has enabled it to achieve company-wide carbon neutral status.
RSE delivers projects for the UK’s major water companies, as well as leading firms including Diageo, Siemens, SSE and EDF.
Next month, RSE will open its first office in the United States at the Global Water Center, the headquarters of The Water Council in Milwaukee, Wisconsin, marking a key step in expanding RSE’s presence and partnership in the US market.
In 2025, RSE became a first-time sponsor of The Water Council’s BREW 2.0 Accelerator, an initiative that supports market-ready water technology start-ups through targeted business training, mentorship and networking opportunities. RSE supported BREW Week in Milwaukee, and RSE chief executive Stephen Slessor also participated in a webinar to share his insights on innovation in the water sector.
