Urgent action is needed to remove pollutants from urban wastewater, which is often used in cities to grow food, an international study has warned. Data collected by the International Water Management Institute (IWMI) found that 85% of cities discharged the water without any appropriate treatment. With many developing nations swiftly urbanising, the authors said people were at increasing risk of disease.

Read More
Source: http://news.bbc.co.uk/