Water, water everywhere -- but for Kevin Freedman, there are just two or three litres to drink and 22 litres for the rest of his daily needs.

"We have a lot of water in Canada, but we don't have an unlimited amount of water," said Freedman, on staff at the YMCA-YWCA of Winnipeg who is earning a master's degree in non-profit management.

Freedman said he's up for the challenge after living for a few years in a part of Indonesia where bathing with a cloth and bucket was the norm. His shower uses eight to 10 litres per minute and that means even a few minutes "would be all the water I'd have for the day," he said.