Information on water quality in your area is available from several sources, including your local public health department and your water supplier. You can determine whom to contact by checking your water bill or by calling your local town hall. State agencies also can provide extensive information on your water supply and its quality. Each state has a department responsible for drinking water quality.
EPA maintains general water resources information at its headquarters and in its 10 regional offices. Other groups, such as environmental organizations, also may be able to provide information.