On 16/08/2018 09:35, The Natural Philosopher wrote:
....
Its not particularly onerous. But it does set a precedent for
retroactive building regulations which is slightly worrying.

There is no retroactive application of construction standards to septic
tanks. This legislation merely bans existing practices that may be
damaging to the environment. Precedents for that go back to 1306, when
Edward I banned the burning of coal in London. The Clean Air Act 1956 is
a more modern example, but virtually all environmental legislation does
something similar.


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Colin Bignell