This study, commissioned by the Swiss Gas and Water Association and published in 2006 by Niels Jungbluth traces the entire life cycle of water from water catchment/extraction to serving it up in a glass. Using a life cycle assessment approach, different variants are compared with one another, for example: carbonated versus non-carbonated and refrigerated versus unrefrigerated.
This study, commissioned by the Swiss Gas and Water Association and published in 2006 by Niels Jungbluth traces the entire life cycle of water from water catchment/extraction to serving it up in a glass. Using a life cycle assessment approach, different variants are compared with one another, for example: carbonated versus non-carbonated and refrigerated versus unrefrigerated.
A direct comparison of drinking water from the tap with unrefrigerated bottled water shows that the environmental impact of tap water is less than one percent of that of bottled water. Even when refrigerated and carbonated, the environmental impact of tap water is approximately only one fourth of that of bottled water. Environmental impact is measured with respect to the following:
- Energy use
- Crude oil equivalent
- Greenhouse gas emissions
- Environmental impact points 97
- Eco-indicator 99 H/A
The last two take account of impacts such as contaminants, resources and waste and weight them in accordance with pre-defined policy or other objectives.
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