...EPA in partnership with tribes

Case Studies: These case studies provide background information on four tribes that have adopted EPA-approved water quality standards. They contain information on the tribe, the tribe's development and application of water quality standards, and tribal recommendations. More information about the case studies.

We recognize that Indian tribes and Native Alaskan Villages face serious human health and environmental problems. Protection of the nation's waters is an enormous task. We are responsible for developing sound, scientifically defensible standards, criteria, advisories, and guidelines under the Clean Water Act and the Safe Drinking Water Act. We are working with Indian Tribes, our regions, other federal agencies, and states to protect the health and environment of waters in Indian Country.