I am a little aware of water technologies.
similar happening in Doha,,, few of my colleagues witnessed this drama & got preyed of. they installed their device and few were preparing to do this, which by no means needed in doha. their device is basing on Reverse osmosis, which waste 80% of water & also filters some dearly needed minerals.
any way, this is a drama, the agent contacted me to persuade my colleagues to buy their product