Halling Lake (lansfield.com)

simosimo, on March 17, 2007, said:

I love driving by this lake, my dad always used to tell me about why it was always that color, nice one

TinaP, on September 3, 2007, said:

What did your Dad tell you was the reason? I was always told because it was soooo deep. No one has ever managed to get to the bottom of it.

I drove past it yesterday and it was looking particularly blue. Just lovely.

Phillip Abraham, on September 24, 2007, said:

the colour is due to the purity of the water, there is a pumping station nearby, at the top of the hill i think, they have to perform only minimal treatment onthis water source. I have added this picture to Wikipedia, under the section 'Halling', tells you in a little more detail :)