It’s all pipes, Jerry!
Don’t they lead to the same system? If there was a leak in your roof over your shower, your shower drain will also be a storm drain
Usually not. When they do it means a big storm overwhelms the sewage system and raw sewage is released someplace. Most places get a storm this big several times a year.
For people on septic systems it isn’t unheard of for shows to bypass the septic system and go directly to the drain field - only water from your toilets and kitchens needs treatment (as a parent I can inform you kids sometimes poop in the tub so this is a bad idea). I’ve also heard of people diverting their shower to a tank that is then reused for flushing toilets - if you live where water is scarce this might be a good idea, but for most of us it isn’t worth the costs.
Depends on where you live. In central New Jersey a lot of storm water from the streets is a separate system that heads back into the rivers or whatever whatershed. Where as sewage from your home or business drain goes to sewage treatment processing.
I believe in Northern Ireland it’s the same system. I may be wrong, though. Our sewage system has a lot of issues, unfortunately.
In theory there’s no difference between theory and practice, but in practice there is.
Everything is a hole with enough force