Dennis Berkshire has over 30 years of experience in the aquatics industry, with field experience in swimming pool design, construction and operation, and training. He has a strong background in water chemistry and has been involved in the design of automated filtration chemical feed and water chemistry control equipment. As an expert on swimming pool operation, he has worked with several states on swimming pool environmental health codes, including serving as the chair on the Technical Committee for the Model Aquatic Health Code. He is currently serving on the National Sanitation Foundation Standard 50 Board. As an instructor for the Certified Pool Operator course and the Aquatic Facility Operator course, Dennis has trained nearly 1,000 swimming pool and aquatic facility operators. He is a contributor and editor of the National Parks and Recreation’s Aquatic Facilities Operator text book. He has presented numerous technical white papers and seminars to various trade associations including the World Aquatic Health Conference and Athletic Business.