Basic information about the quality of our nation's drinking water is contained in this brochure. Written for the general public to familiarize them with the situation, it will also help them evaluate the state of the nation's drinking water as well as that of their own communities. The need to assure reliable sources of healthful drinking water for present needs and future growth is discussed together with a few of the standards already established, areas where improvement is needed, water treatment processes presently in use, and the topics and directions of the Environmental Protection Agency's water hygiene research. It concludes that while efforts at all levels of government are needed, the ultimate success of these efforts will be determined by the degree of concern and vigilance of hometown Americans across the country. Ideas for becoming informed and involved citizens are included. (BL)