ELI5: Explain Like I'm 5

Cast iron pipe

Cast iron pipe is like a big straw that helps move dirty water away from your house. It's made from a special type of metal that's really strong and lasts a long time. It's called cast iron because it's made by melting iron and pouring it into molds.

The pipe is usually a dark gray color and can be really heavy. It's like a big puzzle piece - it's long and has grooves on the ends that fit together with other pieces of the same type of pipe to make a long, continuous line.

Cast iron pipe has been used for a really long time because it's really good at carrying dirty water away from our homes without leaking. Think about it like this: when you suck water through a straw, you create a vacuum that makes the water move through the straw. The same thing happens with cast iron pipes - when water is flushed down the toilet or flows down a sink, it creates a vacuum that gets the water moving through the pipe and away from your house.

So basically, cast iron pipe is a really strong and heavy straw that helps move dirty water away from your house so that you don't have to worry about it!