New York - The United Nations called Friday for the injection of 15 billion dollars a year into the global water market to meet daily water needs of billions of people as it marks World Water Day on Sunday.
March 22 each year is dedicated to water, a commodity called "the most precious natural resource" by UN Secretary General Ban Ki-moon.
"More than ever we need to work together to use it wisely," Ban said in a prepared message for World Water Day.