What started out as a business dream between two brothers, has evolved into one of the USA’s leading Commercial Aquatic Water Quality Control Companies. Since 1983, CES has provided "supply and support" water treatment programs for thousands of institutional and commercial swimming pools, spas, water parks, water features, and industrial proc- ess water clients. Current long-term clients include many cities, counties, school boards, universities, theme parks, major water parks, resorts, motels, and condos. Year after year, CES has been rated #1 among aquatic water treatment companies, by customers and by the top commercial equipment manufacturers in the industry. Not only do we at CES provide over 9,000 of the most popular parts and accessories in the industry at wholesale pricing, but we also offer on-site service and support for each and every part in our catalog offering. CES..Excellence in Water Quality Control.