LAT Water Technologies | 818 followers on LinkedIn. LAT Water, a British technology company developing and implementing innovative approaches to renewable energy powered desalination/water treatment. LAT Water Limited have developed two applications so far - The Water Machine - a solar or waste energy powered desalination/wastewater treatment facility which provides fresh water at a lower cost than competing technologies. It is low in maintenance due to few moving parts, it is elegant and simple in design so fast to erect and install and is of modular design which can be simply expanded to meet customer needs and the MicroLAT.