On Jul 15, 1:56*pm, "BruceB" wrote:
"NT" wrote in message
....

Normally with GSH one doesn't abstract any water, one just takes the
heat from the water.

But sadly, the environment agency consider it 'abstraction' even if you put
it back again. *So is you put more than 20m3 a day of say river water
through your heat pump then you would need an abstraction licence.
Regards
Bruce

I thought with a GSH pump you don't even move the water - the heat
pump pipes are a sealed system pumping coolant round the pipes. The
coolant is warmed up as it passes through the pipes which are immersed
in the groundwater, and that heat is then extracted in the building.
That can't possibly count as abstraction of water. I may be wrong
about the mechanism though.

A