Drinking tap water can be a risky business.

After all, illnesses that can be transmitted through water include cholera, hepatitis A, typhoid and travellers' diarrhoea.

This infographic, using data from the Centers for Disease Control and Prevention (CDC) among others, reveals where visitors can glug from the tap with confidence.

If you are holidaying in Africa or South America, bottled water will be the order of the day as tap water is unsafe for human consumption.

And in Asia only a handful of places are safe to drink from the tap, including Hong Kong, Japan and South Korea.

Always check the seal on a bottle of water to make sure it has not been tampered with. People have been known to sell tap water in old bottles.

It pays to know where is safe to drink tap water around the world, otherwise bottled water is the only option

If there is a problem with the water, avoid ice in drinks and any uncooked fruit or vegetables unless you have peeled them. Preferably, brush your teeth with bottled water.

The infographic was posted by Just The Flight, who also compared the prices of bottled water and beer around the world.