Search The Directory The Web for Home > Science > Environment > Water Resources > Drinking Water > Backflow Prevention > Products_and_Services New! Submit a site   whatUseek Collection Sites (submit a site ):   Give your site great placement in this category in as little as two business days!     whatUseek Directory Site Listings:   CALtec - Backflow test equipment sales, service, and calibration.   Chicago Backflow Prevention Systems, Inc. - Provider of cross-connection control with certified, licensed backflow prevention professionals.   Kansas City Backflow - ASSE certified school for backflow tester certification and re-certification. Offers regularly scheduled training classes and testing in Kansas City, Missouri.   Water Specialties Company - Backflow preventer sales and parts supplier. Help build the largest human-edited directory on the web.   Submit a Site - Open Directory Project - Become an Editor

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