WATER ON TAP

摘要

In an effort to combat his country's long-standing water crisis, Iran's president took to Twitter last year. "We need plan to save water in agriculture, prevent excessive tap water use, protect underground sources of water and prevent illegal drilling," Hassan Rouhani tweeted in November. Iran is far from alone. From the southwest United States to southern Spain and northern China, water shortages threaten many parts of the world. Nearly 800 million people lack access to safe drinking water and 2.5 billion have no proper sanitation.