Nalco Water

Nalco Water, a subsidiary of Ecolab ., is an American supplier of water, energy, and air improvement products and services focused on industrial and institutional markets. Founded in 1928 and headquartered in Naperville, Illinois, the company operates in over 130 countries, serving more than 70,000 customers. Nalco Water’s solutions combine chemistry, digital innovation, and expertise to optimize water and energy use while reducing environmental impact. Key products lude water treatment chemicals, process optimization services, and sustainability-focused technologies. Nalco Water integrates extensive data analytics through connected water performance systems generating over 90 billion data points annually. The company reported revenue of approximately $3 billion in 2025. As part of Ecolab, Nalco Water is aligned with global sustainability goals and emphasizes environmental compliance, operational efficiency, and risk management across complex global supply chains.