The age of tube wells were calculated and its impact was compared on Arsenic contents. It
was found that Arsenic contents were in equal proportion regardless of tube well age. The
graph shows that tube wells of long and short age have arsenic contents in mix proportion.
Some tube wells of short age have higher arsenic contents while some tube wells of long age
have higher arsenic contents vice versa. Literally it depicts true picture that age has no impact
on proportion of arsenic contents.