|
|
|
Most of the water used as drinking water has to be treated in some way before use. The normal consumption of household water in the industrial part of the world is estimated to be about 130 liters per person and day. 
|
|
|
|
|
|
Most of the water used as drinking water has to be treated in some way before use. The normal consumption of household water in the industrial part of the world is estimated to be about 130 liters per person and day.
|