Water birthing mamas out there?

Hey mamas! This is my third pregnancy. My first was born at 25 weeks gestation so of course he was born in the "normal" hospital setting. My daughter was as well because we ended up having to induce. I really want to experience a water birth as I've done quite a bit of research on benefits to baby and mom. My only fear is this: i have bone on bone in my lower spine and with both previous births i had extreme back labor. It was so bad i didn't even notice the contractions anywhere else! Anyone have any knowledge, personal experience or advice? The big difference this time is that i have an amazing partner that is very involved. Thank you you ladies in advance!