In nature, a billabong is a naturally occurring water feature that fluctuates with the seasons. Our billabongs, or natural pools, are designed to do the same. They sustain the surrounding environment – providing water for irrigation, fire safety, and wildlife. Chemical free, they use natural filtration systems for clear swimming water.Vaughn Greenhill, General Manager at PJL is President of IOB, Natural SPA – (Natural Swimming Pool Assoc. Australia) and is the conduit between Aus/NZ and Europe for the developing natural pools industry.