According to the WHO, contaminated water is linked to the transmission of preventable diseases such as dysentery, cholera, typhoid, polio and hepatitis A. Inadequate water and sanitation services expose people from Darfur to Mexico, and even Saskatchewan to Nova Scotia. It is nearly endemic in health care facilities, where patients and staff are at high risk due to poor water, hygiene and sanitation conditions. Fifteen percent of patients globally acquire a serious infection during a hospital stay.