No Dumpster Diving In Philly!
You wouldn't think you'd need a law like this but, in Philadelphia at least, it's on the books. You can't rent dumpsters, use fire hydrants to fill 'em and swim in them.
According to billypenn.com, Philadelphia's Department of Licenses and Inspections said:
“In view of the City’s commitment to public health, safety and basic common sense, we will not issue permits for block party dumpster pools.
Other reasons for not allowing "dumpster pool parties" included reducing the amount of water available to fight fires, high water pressure pushing someone into oncoming traffic and water mains breaking. The absolute filth inside the dumpsters isn't a big deal I guess.