Owain wrote:
robgraham wrote:
Just out of interest - what criteria does one use to judge when a
spetic tank does require pumping out? The interpretation of the above
thread is that a cess pool requires regular pumping - yearly? -

A cess pool / pit requires *emptying* - it is merely a storage container
for the effluent. This might be as often as every 4 weeks depending on
the size of the pit and the amount of effluent produced by the household.

A cess pit which does not need emptying is leaking, and illegal.

Owain

However we are talking about septic tanks, not cess pits or pools.