goal 6 clean water making clean water by emergency water filter.
researchinhttps://www.waterfiltermag.com/diy-water-filter/g materials and steps to make water filter
materials to make an emergency water filter rock sand,fine sand,charcoal,plastic bottle,cotton material,rocks.
cut plastic bottle and put cotton,fine sand,rock sand ,charcoal ,rock in order.
first put cotton at the bottom at the bottle for about 3 cm
second put fine sand for 5 cm
third put rock sand 3 cm
fourthly put charcoal
next put rock sand and fine sand .
put all the rocks
putting sand water and dirty water to clean water.
test by trying different height of charcoal and how clean the water will be.
using ph measure to measur ph leavel