Lead pipes are not safe for transportation of drinking water because

BOD of drinking water is:

Lead pipes are not used for carrying drinking water because

Lead pipes can be used for:

Drinking water gets contaminated with lead when lead pipes are used for transportation of water. The prescribed upper limit concentration of lead in drinking water is about ?

Lead pipes are not suitable for drinking water, because :

Lead pipes are not suitable for drinking water because :

Lead pipes are not suitable for drinking water because