Excellent photos but not everyone in the UK & Europe embraces the pond idea, just like most of you there are concerns, I certainly have some.

The filtration uses several different parts where nutrients are removed from the water, either phosphates or nitrates and then planting of types that tolerate the water with which option has been chosen. Biological filters are used and just like a reed toilet system by example the bacteria are broken down, they work so ponds can work, do they work quickly enough for a public pool not sure. I know there is a new filter in development for one of the companies (Clear water revival) which they think they will have all the answers.

I really wonder if it's the natural settings that people really like rather than the formal pools. From the photos they seem to loose something when they are formal swimming pools albeit great designs. Is it really the lack of chlorine people want? or just a more natural setting?