World Water Day: are filters the future?
Kate Sharma: 780 million people still lack access to clean drinking water. A new breed of filter could change that but must be made more affordable alongside wider sanitation efforts
https://www.theguardian.com/global-development-professionals-network/2014/mar/22/world-water-day-water-filters#:~:text=When%20typhoon%20Haiyan%20hit%20the%20Philippines%20many%20water%20sources%20were%20destroyed%20or%20contaminated.%20
