Septic Tank troubles?

[Christopher J Lemmon]

Does any one have experience with septic tanks. I am under contract on a property with one. The owner also owns the duplex across the street too. He just had to replace the septic tank on that one, but he has not one the one I am under contract on.

I don't know much about them and want to know what I might be looking at if it goes bad and I have to replace or repair it?

Thanks for any comments or advice?