Water Tanks, page-52

"And from the World health organisation.......
"Contaminated water can transmit diseases such diarrhoea, cholera, dysentery, typhoid and polio. Contaminated drinking-water is estimated to cause 502 000 diarrhoeal deaths each year."

Certainly agree with that.

But what relevance does that have to rain water tanks? Do you let them swim in your tank?

Again, what way is this linked to rain water tanks?

" "between 34 and 76 million people will perish from water related

diseases by 2020. This problem is one of the most serious public health crisis​

facing us, and deserves far more attention and resources than it has received so far."
Wow this is scarier than I thought!"