RSE is a pioneering water treatment and clean energy solutions provider based in the Highlands of Scotland. Established in 1982, RSE has developed into a leading engineering contractor specializing in highly engineered water treatment solutions. The company offers a comprehensive range of services including modular build projects, which utilize a low-carbon approach to construction. RSE excels in innovative technologies and efficient processes, encompassing the full project lifecycle—from design and fabrication to installation and commissioning.

RSE is recognized for its expertise in various water treatment processes, such as microfiltration, reverse osmosis, and disinfection techniques. Their facilities are strategically located across the UK, enhancing their ability to deliver world-class services. With a focus on sustainability and operational excellence, RSE's solutions have garnered numerous awards for innovation and efficiency. The company's dedicated team plays a vital role in meeting client needs while contributing to environmental goals, positioning RSE as a market leader in the water industry.