Cost is the most important ...
Published by Ali Safarzadeh Amiri, Consultant
Cost is the most important reason that in countries like Pakistan, Bangladesh, India, China and other countries in South East Asia, etc., the permissible As level in potable water is 50 ppb. It will be very expensive to deploy technologies -- that can remove arsenic and reduce its concentration to below 10 ppb -- to the vast arsenic affected populations.