"Peter Crosland" wrote in message ...
I built my house 11 years ago and have never had the septic tank emptied.
As long as the bacteria is active the solids will disappear.
Avoid strong chemicals and use an activator every 6 months
You will be told by others to have it emptied every year and average cost
is
around £100

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

Peter Crosland

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