Attacks attributed to Tehran have targeted pumps, treatment facilities and Israeli-made control systems, while strikes on desalination plants expose how easily conflict could disrupt drinking water across the arid Middle East

Cyber attacks on several local water systems in the US carry telltale signs of a hacker group affiliated with Iran, in what is an increasingly common type of warfare.

Attacks attributed to Tehran have targeted pumps, treatment facilities and Israeli-made control systems, while strikes on desalination plants expose how easily conflict could…