We want to make our existing attached garage into a bedroom and a bathroom. The bathroom would be right next to the laudry room. Our house was built in 1960. It is on a slab (no crawl space) with all of the plumbing & heating built into the slab. We have talked to several people about if the toilet could drain into the same place that the laundry water goes. Some said yes, some said no-you have put in an ejector pump and route it through the attic to where our other toilet drains. There is 4 inch floor drain in the laundry room.
Thanks for any info or advise. :)

We want to make our existing attached garage into a bedroom and a bathroom. The bathroom would be right next to the laudry room. Our house was built in 1960. It is on a slab (no crawl space) with all of the plumbing & heating built into the slab. We have talked to several people about if the toilet could drain into the same place that the laundry water goes. Some said yes, some said no-you have put in an ejector pump and route it through the attic to where our other toilet drains. There is 4 inch floor drain in the laundry room.
Thanks for any info or advise. :)

Whoa! You live in a one story house on a slab and your toilet drains through the attic? You're going to hafta "splain" that one to me. Hey! Toilets drain down, not up. If you have 4" soil pipe under the slab you may tie the entire bathroom group to it. However be advised that the size of the floor drain cover doesn't mean it's 4" all the way. Most floor drains are piped 2". Why in the world would you need a ejector pump to lift the discharge to the attic if you have a slab house? In my area all our homes are slab houses. If you can tie to a 3 or 4" main you're home free. Hope this helps and let me know what you decide. Tom

It sounds like we might be OK. Maybe I didn't call the ejector pump the right thing. It's something they use in basement bathrooms a lot.
Thanks for your help!

It sounds like we might be ok. Maybe I didn't call the ejector pump the right thing. It's something they use in basement bathrooms alot.
Thanks for your help!
Your terminology was correct but I can't connect a ejector pump pumping to a hoilding tank in the attic to your house
You live in a house built on a slab. Where does the basement and ejector pump enter the picture? Just interested. Tom