From water features like fountains to the fun and excitement of flumes and kayak courses in adventure parks, water attracts visitors of all ages but, if the water becomes discoloured due to hard water scale, corrosion products like rust or from algae growth, it not only spoils the visual impact for visitors, it also adds many hours of maintenance labour to keep it clean. A well-engineered treatment system together with control of water chemistry and microbiology maintains crystal clear water, improving the visitor experience and protecting the public from water borne pathogens like Legionella.