Riddle

I have a riddle for u guys

Main hint: it has something to do with water that come out from the ground.
Extra hints....
1st hint: It is one of the four seasons.
2nd hint: People usually said it produces the sound 'toyoyoing~'
3rd hint: It can be found in some of your pens, a component in some of your pens.

What is it?

my roommate couldn't answer it. muahaha~ pity him :p