Since the late 19th century, bacteria have been used as
indicators of water quality [3]. Although there are reports
concerning the inadequacy of bacteria as microbiological
water quality indicators [4], it has been recognized that
they are indicators of a broad bacterial group and regular
human microbiota [5]. Nevertheless, bacteria alone offer
limited information regarding microbiological water
quality as they do not reflect the presence of enteric
viruses or protozoa [6]