Water is essential to agriculture, and not only to sustain plant growth. People need it too. Hundreds of thousands of agricultural workers in California perform strenuous tasks in hot weather, and they are at risk of injury from heat stress. In this site you will find information regarding the importance of fluid replacement during the workday, physiological effects of dehydration, legal requirements for providing water in the workplace, links to relevant sites, and other resources for research as well as practical use in the field.  This site is under development at the Department of Agricultural and Resource Economics, College of Natural Resources, UC Berkeley.  Please send us your suggestions, comments, and questions.