Nalco Cal Water, LLC

Serving the West Coast is Nalco-owned Cal Water, located in Orange County, CA. Cal Water has been selling, installing and servicing water purification systems for commercial, industrial and scientific applications for over 65 years. Nalco Cal Water provides a full range of water treatment equipment and services including: Portable exchange deionization service, automatic deionization, reverse osmosis, softening, iron filtration, depth filtration, ultra-filtration, ultra-violet sterilizers, automated controls and more.

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Nalco Water 
1601 W. Diehl Road
Naperville, Il 60563

With unparalleled expertise and cutting-edge technology, we partner with customers to deliver world-class results and optimized operations. Contact us to learn how we can help you.

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Water Pretreatment Equipment

Your water and energy costs are increasing, government regulations are more stringent, and environmental considerations continue to grow.  We offer a fully integrated line of modular water filtration, ion exchange, and reverse osmosis systems that are simple to install and provide years of trouble free service.


Visit our e-commerce catalog, search, select and order replacement parts for many of our systems