In article ,
T i m writes:
You must check flow rate at your main before going down the combi
path, and also bear in mind Thames Water is going round reducing
water pressure in areas of London at the moment, so even if it was
good enough, it might cease being so in the future.

Didn't know that .. but might that also have a big impact on some of
the existing installations .. spoil folks day etc? I suppose they will
come up with a solution .. (like LRP for leaded) .. a pump on the
input .. or (now here's a good idea) .. a sorta storage tank in the
loft! (nah, wouldn't work) ;-)

Yes, householder has to buy a pump, and they're very expensive.
Councils have had to fork out millions on them already for council
tower blocks in the areas already affected.

It's all to do with targets. Government have given water companies
a leakage target to meet. Water companies have discovered they can
meet it just by reducing the pressure in the mains, without fixing
the leaks. The target should have included the mains pressure
somewhere in the denominator, but government isn't clever enough
to think up that.

--
Andrew Gabriel