Vietnam. Ha Tay province. Lai Xa. Heart, arrow and numbers. On the wall, a painted slogan is writen in vietnamese language. " The local government and the Lai Xa community have sucessfully built the progress on sanitation of solid-waste and waste-water ". Lai Xa is a typical hamlet (village) of the Red River delta region and is part of the Kim Chung commune located 15 km west of Hanoi. This peri-urban location is under increasing pressure from the forces of urbanization. 06.04.09 © 2009 Didier Ruef