I would ask if it is an old fashioned septic tank or a newer water treatment style works. Newer water treatment systems tend to have to have power so that’s a give away, water treatment works produce around 95% clean water into a soak away so less likely to have any issues.
I would also ask about how the soakaway works, how long it has been there etc, as they do need to be redone every so often and it is a big messy job.
I would ask if it is an old fashioned septic tank or a newer water treatment style works. Newer water treatment systems tend to have to have power so that’s a give away, water treatment works produce around 95% clean water into a soak away so less likely to have any issues.
I would also ask about how the soakaway works, how long it has been there etc, as they do need to be redone every so often and it is a big messy job.