EnviroSwim ES-3 Fresh Water Swimming Pool System. The patented EnviroSwim ES-3 freshwater system uses three processes: Electronic Oxidising, Ionisation and Ultrasonics. For your assurance, the system has received more independent testing and certification than any other Australian manufactured sanitising system. These tests include local government laboratory trials and certification by NSF in the USA to … Continue reading Perth Pool Supplies – Eco Pool Pumps perth – Fresh water pools with EnviroSwim ES-3