Question

why are lead pipes not used for domestic water supply ?explain

Answer 1

For many years up to 1960 , Lead was the metal used for pipelines that carries fresh drinking tap water  to the buildings, homes and commercial industries through Municipal water supply board.
Lead was also used as soldering material used to join copper pipes and fittings.
Fresh water can dissolve the lead  from pipes and drinking the water contaminated with lead to various health problems like:
1. Long exposure to lead  is serious threat to humans .
2. Lead may effect the mental development of the growing children.
3.Children may have learning difficulties.
4. Fatigue, vomiting,constipation .
5. Lead may accumulate within the body and it can get stored in kidney,bones, liver and other major organs for many years .
Hence due to  above reasons, lead pipes were banned in drinking water pipeline system .

Answer 2

Lead element is very dangerous to human health. Long exposure may affect the growth and development of small children. They may turn mentally retarded or may suffer any learning difficulties. High doses leads to even alteration of genes by chimerism whereas in slow doses it may cause fatigue, vomiting, diarrhea, constipation. Their cumulative storage in human body may affect kidneys, liver, intestine and also interfere in their normal functioning. So, lead pipes were banned in drinking water pipeline system .