The plunge pool is minimal in size due to site constraints (riparian zone at river bank and narrow block) and environmental considerations. It uses an efficient pump/filter system. With galvanised reinforcing and a thicker than normal concrete shell using recycled additives of fly ash and reactive magnesium, the pool is built for durability. It is finished internally with a pebble coating of local stone (minimal transport costs) which is long-lasting and easy to clean. At night, the pool is lit with locally-made LED lights.
The 15,000L (approx) pool is filled and topped up with rainwater and a flexible and moveable outlet hose allows flexible distribution of waste water over the garden area.