Ecolab is a global leader in chemical supply for water treatment and real-time monitoring. In 2021, Ecolab acquired Purolite which is a supplier of ion exchange, catalysts, adsorbents, and polymers for multiple sectors, including the semiconductor industry. Ecolab develops and manufactures resin beads through the Purolite Resins product line. Applications for the ion exchange resins include ultrapure water production and PFAS removal.

After acquiring Nalco in 2011, the company has produced a variety of industrial water treatment chemicals. The company provides comprehensive, personalized solutions to suit customer needs in water treatment and analysis, providing data-driven insight into the efficiency of water treatment operations using the ECOLAB3D analytics platform . Ecolab also holds a 33% stake in Aquatech International, a water and wastewater treatment leader. For more on Ecolab’s water treatment technology, see Nalco Water.