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Conceptualized as self-sufficient, self-governing, sea-bound communities, the vision for these waterborne cities was part libertarian utopia, part billionaire’s playground.

That's because in developing nations like India — where I was born and raised — outbreaks from waterborne diseases like typhoid and cholera are ubiquitous.

Israel has destroyed around two-thirds of Gaza's water systems, according to UNICEF, forcing children to drink unsafe water and increasing their exposure to sewage and waterborne diseases.

There are worries about an outbreak of waterborne diseases as most of the city's network of sewers has collapsed, contaminating water sources.

In its liquid form it is used to treat water supplies and swimming pools to prevent the transmission of waterborne diseases.