Solar Still/Pasturiser: Water from the thames is pulled in through the filters to the bottom and into a resovoir. Copper tubing used to frame the device is heated in the sun and causes a convection current to pull the water through the vast extents of tubing, the water vapour that is pulled from the stangant water leaves all the dirt particles behind. The water is then run through clear pipes behind a UV enhancing film and glass that focuses the suns rays to kill off any remaining bacteria that may exist in the system. There are 2 types of pasturiser, one filters water from the thames and then transfers it through pipes into a separate pool that can be kept clean. The other type sits within the clean pools and circulates the water to ensure it stays clean. This allows the pools to be heated and cleaned through the heat provided by the sun, saving 3KW per litre of water.