Modern Water Plc is a holding company, which engages in the development, production, and supply of technologies for the production of fresh water and treatment and disposal of waste water. It operates through the Membrane and Monitoring segments. The Membrane segment offers water treatment solutions. The Monitoring segment produces across the toxicity, trace metal, and environmental ranges. The company was founded by Neil McDougall and Simon Humphrey in December 2006 and is headquartered in Guildford, the United Kingdom.