Nature & Environment
| American River Natural History Association | |
| California Native Grass Association | |
| California Native Plant Society - Sacramento Valley Chapter | |
| California Wilderness Coalition | |
| Community Alliance with Family Farmers - Building a movement of rural and urban people to foster family-scale agriculture that cares for the land, sustains local economies and promotes social justice. | |
| Davis Farm to School Connection - Dedicated to teaching our students healthy nutrition habits, personal responsibility, environmental stewardship and community awareness. | |
| Davis Permaculture Users' Group - Permaculture encompasses the design of human settlements and the systems that support them: energy, construction, natural resources, business, food, urban and rural planning, wilderness. | |
| Davis South Campus Superfund Oversight Committee | |
| Friends of the Davis Arboretum | |
| Institute for Ecological Health - Addresses major land issues with a focus on Central California | |
| Noise Free America - Devoted to fighting noise pollution | |
| Northern California Solar Energy Assoc - A grassroots volunteer-based education and advocacy group dedicated to accelerating the use of solar energy technology. Celebrating 30th anniversary in 2005. | |
| Quail Ridge Wilderness Conservancy - A nonprofit, public benefit land trust dedicated to wilderness preservation. | |
| RISE - Recycling is Simply Elementary - The RISE Partnership - a partnership to reduce waste in the Davis elementary schools by 50%. | |
| Sierra Club, Mother Lode Chapter | |
| Tree Davis - TREE Davis' mission is to enhance the Davis urban forest while educating area residents, businesses, schools, and other organizations on the value of trees in our community. | |
| Tuleyome - Protecting the agricultural and wild heritages of the Putah Creek and Cache Creek watersheds and associated regions. | |
| Water Resources Association - Yolo County Water Management | |
| Yolo Audubon Society | |
| Yolo Basin Foundation | |
| Yolo County Resource Conservation District | |
| Yolo Land Trust - The Yolo Land Trust is dedicated to preserving the farmland and open space of Yolo County, California. | |
| Yolo Slow Food Convivium - Members of a convivium get together or put on events several times a year, such as a tasting or dinner at which local products are tasted, enjoyed and discussed. | |
| Yolo/Solano Air Quality Management Dist. |