I was just given a banana plant that is about 6ft tall. I do not know much about banana plants. I currently have it planted in my backyard about 12ft away from my septic tank. I am concerned with how fast it is growing and if i should move it to a new location, because im afriad the roots might damage something wether it be the tank or the pipes. Im not sure how strong banana plant roots are and if they even will damage anything. Any incite on this topic would be greatly appreciated.

Depends, is that the kind of banana plants you are smoking ?
Do you have a picture ?

just the fruit plant

There's no problem

You should move it now while you still can and never worry about it again, busted poo pipes could get messy

i did move it to the other end of my yard.. far far away from the poo pipes

Right on good job

dont worry, they grow fast and die fast
banana trees grow and fruit within a season at least where I was living

do you know if one tree will spawn more?.. am i about to have a damn jungle in my backyard??

http://ths.gardenweb.com/discussions/2533332/can-roots-from-banana-plant-damage-pool-or-planter

=> not a problem, banana "tree" roots are like weed roots, and are mostly at the surface. Very soft.