David Hansen wrote in message
...
On 15 Mar 2006 10:25:14 -0800 someone who may be "robgraham"
wrote this:-

Just out of interest - what criteria does one use to judge when a
spetic tank does require pumping out?

When the sludge is deep and so there is not much space for liquid.
Infrequently.

The interpretation of the above
thread is that a cess pool requires regular pumping - yearly?

Depends on the size and amount of liquid put into it. There is no
one answer.

Agreed, the Environment Agency recommend when the bottom silt content
reaches 25% of volume.
This will depend entirely on the design and usage of the tank.
(Baby wipes are a ST killer)
If you start getting silt going down the soak-away,
It _will_ eventually block and cause lots of unnecessary digging to rectify.




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