Savannah, Artesia and ArrowBrooke are located within the boundaries of the Elm Ridge Water Control & Improvement District. The Commissioner's Court of Denton County authorized the creation of the District in 2000, thus allowing for the development of the first Master Planned Community, Savannah. At the time of its creation, all property in the district was in the Denton Independent School District
and given a Denton County City of Aubrey address, using the Aubrey zip code. In 2004 the United States Post Office granted Savannah its own name but still keeping the Aubrey zip code. Since Artesia was closer to Prosper than to Aubrey the residents in Artesia enjoy a Prosper address. The area was already in the Prosper Independent School District. Artesia residents pay Prosper ISD taxes while Savannah residents pay Denton ISD taxes. ArrowBrooke is in Denton ISD and residents there pay Denton ISD taxes. The Water Control & Improvement District is a political subdivision of the State of Texas, and functions similar to a city by constructing and maintaining roads, water, sewer, and storm drainage infrastructure. In addition, the District provides many services such as fire protection, police services, water delivery, and trash collection. The current tax rate for the District is $0.965 per $100 of assessed value. In addition, the District includes fees in each household's water bill for trash collection and fire services.
