We have a attached garage that has already been made into an exersise room we would like to put a bathroom with a toilet and shower in it. The house is in the country and has well water and an aireator in steady of public water and sewer system. How would you go about installing it.

Its hard to say. Im going to take a leap and say the floor is cement at this time? Do you know if it is a counterbalanced slab? How close is the nearest sewer line?

We have a attached garage that has already been made into an exersise room we would like to put a bathroom with a toilet and shower in it. The house is in the country and has well water and an aireator in steady of public water and sewer system. How would you go about installing it.

As Bob has asked, "where's the nearest sewer?"
After you find it you will Wye or Combo Off the sewer line and bring it up to the slab.
And here's the rest should go down. (see image)'
Good luck on your project. Tom

Califdadof3, Tom is telepathic and knew I would be here shortly to ask that same question, where is the nearest sewer line. KKT4969, you do know this will require jack hammering some floor out of the garage and you will need to plan your slope to the nearest sewer connection point. 1/8" p/f for 4" drain and 1/4" p/f for anything less than 4".

Califdadof3, Tom is telepathic and knew I would be here shortly to ask that exact same question, where is the nearest sewer line. KKT4969, you do know this will require jack hammering some floor out of the garage and you will need to plan your slope to the nearest sewer connection point. 1/8" p/f for 4" drain and 1/4" p/f for anything less than 4".

Ok, now it makes sense. For a minute there I thought I grew a new nickname :)