[11][12] In the United States, rules govern the organic winemaking process at all stages of production, including those related to harvesting, the types of yeast that can be used, as well as storage conditions.
The total sulfite level must be less than 20 parts per million in order to receive organic certification.
Natural winemaking is not governed by laws in the U.S. and has no inspection or verification process unless it is a biodynamic wine.
Examples include the use of composting and the cultivation of plants that attract insects that may be beneficial for the vines.
[19] Environmental issues covered by sustainable wine range from wildlife habitat, pest management, to soil health.
Renewable energy and improvements in infrastructure such as capturing and recycling carbon dioxide from alcoholic fermentation also play a role.