Saw a video on youtube where some guy made a water filter out of a bottle charcoal sand and little rocks.
Rock and sand water filter.
Then after constructing the filter he continued to filter some dirty water and commented that the first little bit is going to be nasty since its getting the dirt off the sand and rocks in the filter.
The water filter diy with sand is quite different from the simple filtration system as it requires more components and is a more complex but better way to clean your water.
He commented that since the charcoal is very porous it s great for filtering.
If you choose to create a sand filter you have the option of making a slow or fast filtration system both of which are effective.
Very little of the water we use every day comes out of the ground completely pure.
Lab effectiveness field effectiveness and health impact.
In a biological sand water filter micro organisms most of them harmless grow and cling to the surface of sand particles inside the filter.
As water flows slowly through the sand these organisms form a biofilm that traps and consumes other micro organisms including those that make people sick.
Slow sand filter lab effectiveness studies with a mature biolayer have shown 99 98 protozoan 90 99 bacterial and variable viral reduction.