The Emerging Revolution in Groundwater Rights
Exempt wells refer to domestic, agricultural or low capacity wells that receive a lesser level of regulation. This regime exists mainly, but not solely, in prior appropriation states. Due to concerns about cumulative effects of many exempt wells, these water withdrawals are receiving increased scrutiny and regulation.
Federal reserved water rights automatically attach to lands reserved by the federal government, like Indian reservations and conservation areas. Federal courts recently found that groundwater comes within the ambit of federal reserved water rights.