A trusted partner at nearly three million customer locations, Ecolab is the global leader in water, hygiene and energy technologies and services that protect people and vital resources. With annual sales of $15 billion and 49,000 associates, Ecolab delivers comprehensive solutions, data-driven insights and on-site service to promote safe food, maintain clean environments, optimize water and energy use, and improve operational efficiencies for customers in the food, healthcare, energy, hospitality and industrial markets in more than 170 countries around the world.

Editor's note: Updated Dec. 19, 2019.