The World Health Organization estimates that “at least 2 billion people across the world use a drinking water source contaminated with faeces”. It further states that the consumption of contaminated water can cause cholera, diarrhea, dysentery, polio, and typhoid. As per this organization, “contaminated drinking water is responsible for 485,000 diarrheal deaths each year”. The increasing concerns over waterborne diseases, … Continua a leggere→