Number of bathrooms in shared living space? MN

[Matthew R.]

One of our properties is a shared living space, currently there are only 4 tenants living in a very large space. Right now we have two 1/2 bathrooms and three 3/4 bathrooms for them to use. We are looking to get some renovations done and maybe cut down on the water bill a bit. Would it be legal to have just one 3/4 bathroom and two 1/2 bathrooms? Thanks!