The Natural Philosopher Wrote in message:
On 28/07/2020 12:37, NY wrote:
"The Natural Philosopher" wrote in message
...
How often does a septic tank need to be emptied of solids which don't
fully rot down, even though the majority of the liquid is discharged
(after processing) into a soakaway?

Depends how much **** and how many sanitary towels you put in..

OK. Two adults. No sanitary towels etc - indeed we are careful to abide
by the "if it's not gone through you, don't put it down the loo" rule,
as well as only using washing up liquid, toilet cleaner and dishwasher
tablets which say they are dishwasher-safe.

should get about ten years out of that

Mine only got emptied because :
(a) a toad hibernated in the outflow causing a flood which blew the
motor and
(b) the belt snapped after 15 years

In both cases access was required deep and the engineer didn't want to
wade in ****

In neither case was it brimful of solids


What's the maintenance contract cost? Ballpark will do...
--
Jimk


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