Tenants Rights for repairs

[isaan]

Ever since moving into my apt in May, I've been dealing with a flooding bathroom. The building manager has been coming out to fix it when I call him but the "fix" would last a week before it would start flooding again. End of July I informed him I was going out of town for two weeks and requested maintenance for this but when I came home it looks like nothing was done. It has been a week since coming back from my trip and I've been trying to call him but his phone has been disconnected.

Everything has been verbal (bad move) and he hasn't been completely negligent so what can I do?
I'm gearing up to send a letter. Under the law how long does he have before I can break my lease and get my deposit?

I tried calling http://www.tenantsunion.org/ hot line but it was busy during their hours so I turn to you Seattle.