You need to have a tank meeting modern regs which is almost always an active bio-stirrer one IF YOU REPLACE A TANK. But no building reg has EVER been retrospective.
I am not selling my house. I have no thoughts of same.
I am not replacing the tank at all, as I said it works.
I do not discharge into a ditch or a water course in anyones field or anywhere else. The drainage field runs across my own garden and leaches out . No water course anywhere.
the 2015 regs are retrospective int he sense that if your tanks dont meet modern regs (like ours which discharges dirty water into a ditch) then you have to get it sorted.
A similar retrospective law was the anti smog laws where londoners were told they couldnt burn coal any more
and the EU anti pollution laws which finally cleared sewage from British Beaches
Rejected by the seller as there is no legal requirment for anything to be changed. Mortgage company might try an insist but that is the buyers problem not the sellers.
ISTR that the requirement for a active system only applies if the out fall is into a water course, even for new/replacement systems. A drainage field is not a water course.
How do you mean "how far from a public sewer do you have to be these days to be allowed a septic tank"? Are you saying that if there was a public sewer running past your house, you would even *want* a septic tank? They are a solution of last resort when there isn't a sewer nearby.
As regards "how far does a septic tank have to be from a dwelling?", is the restriction where the tank is/are, or is it where the outflow is? Is it legal to have a tank within about 10 feet of part of the house, but the discharge is about 50 feet away?
They are not allowed to be fitted as a replacement for an old one, or for a new-build. But if you already have one, you are not required to have it replaced with a mini sewage works as long as it discharges into a soakaway and not into a water course. Let's hope that ruling doesn't change, otherwise we'll be saddled with a large bill.
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says "Septic tanks discharging into a soakaway (subject to compliance with Part H of Building Regulations) are not affected by 2020 septic tank regulations."
It doesn't mention any difference in regulations between existing and new discharge, just that if you already or were planning to in a new installation discharge into a water course, you need the full plant; but if you already or were planning to in a new installation discharge into a soakaway, then a septic tank is fine.
Of course that may not be a full and accurate statement of the regs., though it seems to correspond with
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and related pages.
The gov.uk site says "You must get the sludge that builds up in your septic tank or small sewage treatment plant removed (desludged) before it exceeds the maximum capacity. As a minimum, you should have your treatment system desludged once a year or in line with the manufacturer?s instructions." I presume "at a minimum" means "at least as frequently as".
My parents' holiday cottage has a septic tank for the sewage, as have all the other houses in the village. But the grey water (bath / washing up water) discharges (via a communal drain) into a nearby stream, which I'm sure is not allowed...
Funny story: when we bought the cottage, the septic tank had been installed and was being used, but in the back garden was a large breezeblock-lined open pit, with a ceramic T piece from a pipe half-way up. It was about
15x10x5 feet. Apparently in the past, someone had installed a cesspit (there was only one chamber and no outflow) and at some point (hopefully before the toilet was flushed for the first time!!) they worked out that the exit into the chamber was *higher* than the toilet. Shit, like water, doesn't flow uphill...
It's just dawned on me why the house with the noisy treatment plant has one: it's right next to a stream, so even if there was space under the lawn for a soakaway / discharge field, it would probably be too close to the stream.
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