Whether it was the women of the well in ancient times or the water-cooler conversation today, people gravitate towards sources of fresh water. The idea of filling two human needs with one work prompted a pair of Hong Kong architects to design a water harvesting community. Hall for a small rural community in Cambodia. The social project, called Waterhall, won the grand prize for sustainability at the Hong Kong Design Center’s flagship event, the DFA Awards, in October. Magic Kwan Chun-sing and Kenrick Wong….