A water district is an organized government entity created and supervised by IDWR to distribute water consistent with water rights on record with IDWR. Water districts are the only water delivery entity specifically authorized to administer the delivery of Idaho water from a public water source or water system. Distribution of water within a water district is accomplished by the elected and appointed watermaster.
The following document is a complete list of Idaho's water districts (active and inactive) with detailed descriptions of the boundaries.
Other Water-Related Districts
Water & Sewer Districts
These districts are organized in accordance with the provisions of Idaho Code § 42-3201 et seq. Water districts supply water for domestic, commercial, and/or municipal purposes while sewer districts provide for sewage disposal. A district can be created for the combined purpose of water supply and sewage disposal. IDWR has no jurisdiction over these types of districts.