Calculate your impact! Most people probably don't realize what kind of impact their actions and choices make on the environment. Much of the world gets by on 2.5 gallons of water per day. The average American uses 400 gallons per day, 30% of which is for outdoor uses and half for watering lawns- 7 billion gallons per day. The average American per capita emission is 5 tons of carbon annually. In Sweden (with a similar standard of living as the US) the carbon output is less than two tons of carbon per person per year. Use our calculators below to determine your impact and what actions you can take to adopt a more green lifestyle.