First maybe some consideration should be given to the report. Remember that it is written to sell magazines and that should open it up to all kinds of questions. Anybody who believes a report just because it is written is open to folly.
It seems to relie on using small bits of information to arrive at false assumptions.
Quote "Higher turbidity levels may indicate higher levels of disease-causing microorganisms, such as viruses."
Had they wanted to give a balanced account, they should have stressed that high turbidity MAY indicate higher levels of bacteria, but that is IF the water is not treated.
Yes, it is true that drinking from a muddy puddle will give more bacteria than drinking from a clear spring in many cases but don't we need to consider that the water is treated with chlorine or chloramines to kill that bacteria?
Total turbidity is one of many small factors in water treatment but it is by far one of the lesser items for concern when rating water.
This report is another example of selling information in a scary way rather than reporting the truth. But then who would buy a report that told them drinking untreated water from the Potomac River is more dangerous than drinking from a spring in the high Rockies?