Water pipe bursts in apartment?

Last night, the upstairs apartment's water pipe burst, and water leaked all over my apartment. Luckily, none of my belongings were damaged; however, it is not cold in NY in June, so I'm chalking it up to piss poor building inspection. This is not the only problem I have had with this apartment, and I would finally like to break my lease. Can anyone locate some information (website reference?) as to how I can break my lease without penalty?