The 4th International Congress Waste, Water and Energy Management, hold in Madrid on 18th, 19th and 20th July, count on the presence of LIFE ALCHEMIA. The attenders were informed about the last advances achieved by different research laboratories, technological centers and enterprises along the world in the fields “treatments of drinking water” and “treatments of wastewater”. Our partners from CARTIF exposed the technologies used by LIFE ALCHEMIA to remove the natural occurring radioactivity from water, the advances carried out so far in Estonia and Spain, and the actions planned for the next months.