my comment - there's a big chunk missing out of that explanation - isn't there just !!
A little more about cess pits (have searched septic tanks yet)
http://www.gd-environmental.co.uk/blog/how-often-should-i-empty-my-cesspit-and-other-faqs/
How Often Should I Have My Cesspit Emptied?
We get asked this a lot! And it appears everyone seems to have differing opinions, ranging from your neighbour who thinks it never needs to be emptied as its self-cleaning, to the Environment Agency who recommends it being emptied once a year.
The frequency also depends on a number of factors; the size of your property, size of the tank, the number of occupants and the general usage, such as the amount of people bathing or showering every day.
How Do I Know it Needs Emptying?
You can usually determine if your tank needs emptying due to an unpleasant odour coming from your tank. GD Environmental suggests you follow The Environment Agencys guidelines and arrange for your cesspit to be emptied on an annual basis to prevent any offensive odours and blockages.
What Maintenance Does My Cesspit Require?
Cesspits are relatively low maintenance, providing they are emptied regularly. This can be easily arranged by calling GD Environmental on 01633 277755.
We also advise that you dont allow flammable liquids to enter the system and keep the service area around the cesspit (manhole) free from overgrown plants and weeds.
Regular maintenance also prevents your tank from overflowing or leaking. Should this happen, it needs to be dealt with quickly and efficiently to prevent it polluting nearby land and water.
[FONT="]“At one point I found it particularly odd that after a conversation I had with him, he appeared to turn his head to the side and looked at us and grinned.”
http://www.chroniclelive.co.uk/news/north-east-news/helen-baileys-fianc-grinned-cops-12483345
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A cesspit functions differently if it is connected to a sewerage system. Quoting from some earlier posts of mine:
http://www.websleuths.com/forums/sh...Royston-11-April-2016&p=12693998#post12693998
The problem might be with the slope of the property. If the house was built around 1900 with a septic tank or well, then all drains would flow in the direction of the well in the back of the garden. This puts the house on the highest point so to speak, at least for the drains.
So if a modern sewage system is built from the main road in front of the house, you have a problem, because all your pipes are going the other way, and water does not flow uphill by itself. Plus you have to connect the system from the lowest point and that would be the garage. According to the info, the garage has a guestroom with facilities.
http://www.websleuths.com/forums/sh...Royston-11-April-2016&p=12694401#post12694401
If a cesspit or cesspool has an outlet or overflow that is located lower than the inlet, the system may function for ages without anyone ever having to clean it. Also, this would give the impression that the overflow IS the actual septic tank, as the Police thought when they first searched the premises for Helen.
What happened at the dump?
[snipped]
"I’ve taken three or four duvets there before."
http://www.cambridge-news.co.uk/incoming/helen-bailey-murder-trial-case-12475974
Aerial view of property shows what an obstacle course it would have been to drag Helen from the rear of the house to the rear of the garage:
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Oh really.