what are these two things in my basement and can they be used to add a bathroom

I am not a technical person and I am wondering what are these two things in my basement?

• I think one of them is the water input (with meter) for my house
• the second one coming from the ground is for the wastewater output

I am wondering can they be used to add a full bathroom in my basement? the reason I am asking is I contacted a contractor on the phone and he gave me two prices based on whether he needs to dig the concrete foundation to connect the wastewater.