Rainwater into septic tank

[Julez6]

Hi
I have discovered that all the rainwater goes with the wastewater into our septic tank, which is a must not do according to most sources. We live in northern Scotland that has very high rainfall, in a remote location. There's no apparent problem with the tank, other than an occasional smell. Is there a need for new drains and separate soak away - or leave well alone?

 

[Burnerman]

The soakaway from the tank must be working very well if it can deal with such water volume!
It’s best to inspect the tank during heavy weather just to see there’s no overflow visible.....is it brick build with concrete lids?
Personally I’d want my fresh water to go to a separate soakaway but there doesn’t seem any need to panic.
I can’t comment on any byelaws of course.
John

 

[Julez6]

Its an onion shaped plastic tank that replaced an earlier concrete version. I'm wondering whether to run the rainwater via the old tank and drainfield as it goes into uninhabited woodland.

 

[Burnerman]

It sound like a good plan - so long as the original tank outfalls are still working.
I assume the new tank has it's own outfalls?
My own concrete, two chamber tank (1960) is still working fine, but I replaced the clay outfall pipes with perforated plastic in 2000.
John