Mr Hinton was speaking to the BBC earlier in the week and said the company wants to “do more” at a separate works at Bewl Water reservoir, near Wadhurst in East Sussex, and spend £30m on expanding output capacity.
The proposal would give the company the ability to “rapidly fill the area of Tunbridge Wells, for example, as soon as we see any issue”, said Mr Hinton.
He said this would allow “extra resilience should any other challenges hit any other treatment works” without further draining the reservoir.
“It’s not only for Tunbridge Wells, it’s for the wider parts of Kent as well,” added the chief executive, who has faced calls to resign over the supply issues.
