EcoWater Systems Tampa is one of the largest residential and commercial water treatment businesses in the state of Florida. EWS Tampa is a third generation, full-service company specializing in water systems for industrial, commercial and municipal applications. We are part of Marmon Water / Berkshire Hathaway Company. Call us today for a FREE in-home or in-business water analysis! EWS employs a team of engineering, sales and service professionals experienced in the design, application, installation, maintenance, troubleshooting and repair of water treatment equipment and related systems. EWS specializes in filtration, ion exchange, and membrane water treatment technologies. EWS offers turn-key system supply and installation services.