The organization is a nonprofit association whose principal mission is to promote and preserve sustainable agriculture as the highest and best use of the natural resources of napa county while protecting the ability of wineries to produce, market and sell wine.

Winegrowers provides an essential voice to napa county's political dialogue. The winegrowers of napa county is committed to social and political actions which: - preserve and enhance the environment - maintain the economic viability of agriculture - present a model for social responsibility