Are you graduating between fall of 2026 and spring/summer of 2027 and looking for a summer internship?

Our company is a trusted partner at nearly three million customer locations in more than 170 countries around the world. 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, health care, energy, hospitality and industrial markets.

At the core of Ecolab, we partner to make the world cleaner, safer, and healthier – helping customers succeed while protecting people. Come join us and hear from our engineering technical sales team, supply chain team, and RD&E team on how you can use your engineering degree at Ecolab/Nalco Water and our internship opportunities for summer 2026.

Our internships provide hands-on experience in an industrial setting, helping our customers solve operational efficiencies and reach sustainability goals. Our internship serves as a gateway to our full-time opportunities after graduation as well!

You can learn more about our opportunities here.