To make our pure water we pass water through a 4 stage reverse osmosis system. Window cleaning has really changed over the years, what was once a low cost start up business has changed into something that requires much larger investment in water purification set ups, light weight hi tech water fed poles, and vehicles that can take all of this tech. The result from a window cleaners perspective is massively in safety as there is no longer any need for ladders. From a customers perspective window cleaning is far more thorough and far more private, as you wont have anyone looking through your bedroom window at early hours of the morning.