Leo Engineering Services a portfolio of products and systems designed to effectively meet the demands and challenges of treating water and wastewater. From smarter aeration to advanced filtration to chemical-free disinfection, Leo Engineering Services experts evaluate the varying needs of customers and help them find the right solutions for their application. Through the brands that have been trusted for decades, Leo Engineering Services hundreds of solutions backed by a comprehensive, integrated portfolio of services designed to ensure that water and wastewater treatment equipment keeps running at its best.