Ten litres of water is required to manufacture 1 litre of gasoline. One thousand kilograms of water is required to grow 1 kilogram of potatoes. Acid rain with a pH of 3.6 has 100 times the acidity of normal rain with a pH of 5.6. Each day humans must replace 2.4 litres of water, some through drinking and the rest taken by the body from the foods eaten. Canada has built over 600 large dams and about 60 large domestic interbasin diversions.
Water power meets about two thirds of the nation's electrical needs.
Twenty-six percent of all Canadians rely on groundwater for domestic use. Large areas of the country are dependent on groundwater, for example, Prince Edward Island, New Brunswick, Saskatchewan, and southwestern Ontario. It helps digest our food, take in oxygen, transport body wastes, and control body temperature. The wettest place in Canada, on average, is Ocean Falls, British Columbia, with 4386.8 millimetres precipitation per year. The place with the least amount of precipitation, on average, is Eureka, Northwest Territories, with 64 millimetres per year.