Nalco Chemical Company During the past century, Nalco Company has grown from a fledgling water treatment business to the leading integrated water treatment and process improvement company in the world. They do this by focusing on our core markets of water treatment andprocess chemicals and on our corporate strengths - global presence, on-site expertise, and innovative products and services. Nalco's more than 11,000 employees work with more than 70,000 customers in 130 countries in industry, government and institutions to reduce water and energy consumption by solving and preventing problems, protecting the environment, decreasing costs, increasing productivity, improving profitability by reducing customer total costs of operation, and maintaining asset reliability. Read More Read Less