3 ms·
It can be very clean, it can be very dirty. It depends on your roof type, weather and local environment. In most cases, it wouldn't pass most country's regulati
by barbegal 6y ago
It can be very clean, it can be very dirty. It depends on your roof type, weather and local environment. In most cases, it wouldn't pass most country's regulations on safe water quality [1]
[1] https://www.nature.com/articles/s41545-019-0030-5 https://www.nature.com/articles/s41545-019-0030-5