Fears that the taps in the South African tourist resort of Knysna, with its turquoise water, sandy beaches and pleasant weather, could soon run dry - a moment known as "day zero" - have prompted a state of disaster to be declared.

It is a scary prospect for the 100,000 residents who live in an area situated along South Africa's famous Garden Route, a 150km (93-mile) stretch of seaside towns with forested and mountainous scenery on the southern coast.

But it is the latest South African town to be hit by a severe water crisis, caused by the failure to maintain infrastructure and changing weather patterns.

Beneath the pretty veneer of Knysna - which is also retirement haven for more affluent South Africans - its water system is on the brink of collapse.

Official estimates suggest that around 55% of the town's drinkable water is lost to leaking pipes.