Today is World Water Day.

Water — wai — is the source of life, and without it we would not survive.

World Water Day is an initiative that came out of the 1992 United Nations Conference on Environment and Development. Held annually on March 22, its purpose is to draw attention to the importance of freshwater as well as to advocate for the sustainable management of freshwater resources.

This year's theme is: "Water for cities: responding to the urban challenge."

In some parts of the world, there are women and children who walk 6,000 kilometres (3.73 miles) just to get access to fresh water.

On Oahu, with a population of over 1 million, our drinking water comes primarily from fresh water filtered through mountain watersheds. We're fortunate to have access straight from the tap, yet our island water supply is a precious resource.

We worry a lot about our carbon footprint, but we should probably also think about our water footprint as well.

Here are 7 ways to save water from the Honolulu Board of Water Supply. Installing water-efficient plumbing fixtures is just one way to save water consumption.

The National Geographic also has the following tips for conserving water.