I could run to the local gym/hotel with a pool, this would take 4mins googling then down two flights of stairs 3 mins, then I estimate another 10mins running to it, who knows what obstacles I would face once there, I may have to overpower a security guard or gym bod, my hand to hand combat is a bit rusty so conservatively another 4mins so roughly 21mins.
Or I go to the basement 4mins, take the fire axe and start smashing some of the big pipes down there, risky mind, they could be the shit pipe (would this count?), boiling water or gas.