A Perimeter-overflow swimming pool design (also referred to as a knife edge swimming pool or a wet edge swimming pool) incorporates the infinity-edge look but differs in that the design allows water to spill over all four sides. Like the infinity design, the water that flows over the sides of a perimeter-overflow pool is collected in a hidden catch basin and recirculated. Some perimeter-overflow designs include elevated edges that spill into a catch basin below while other perimeter overflow designs sit the pool flush within the deck with the overflow spilling into a narrow hidden catch basin underneath.
The above award winning swimming pool design by Shasta Pools – Arizona – USA
This elegant style of swimming pool is often described as mirror-like. Perimeter-overflow allows water to pour in a thin sheet over the edges resulting in a smooth and reflective surface. While this is a stunning visual effect, construction of this type of swimming pool design is complex and requires advanced knowledge of hydraulics and swimming pool construction techniques (these hydraulic systems are a hybrid of pressurized returns and gravity drain lines). Projects including this form of design should only be constructed by an experienced swimming pool construction company.
The above award winning swimming pool design by Artistic Pools – Georgia – USA