Take, for example, a project with the purpose of improving peoples health through increased food production obtained via activities such as irrigation and use of pesticides. Such a project will not be sustainable if water is extracted at a faster rate than it is replenished. Furthermore, if the increased food production is made at the expense of pesticide residues in the drinking water, then the project purpose may be undermined by health problems among the villagers. In such a case the project cannot be called sustainable, even if the increased food production is sustained after the end of the project
