"
All well and good provided it is functioning correctly. Have you had the
output tested to see that it is within the consent limits?

What are the "consent limits"? Is this a legal requirement regarding
septic tanks?

The Environment Agency set limits to the strength of the pollutants being
discharged into the soakaway. If they are too high then you can be
prosecuted. Recently installed septic tank installations should have a
formal consent that specifys this. Many earlier ones do not but it does not
mean that you cannot be prosecuted.

Peter Crosland