How-To Guide: Part One
State Status
Check out the state-by-state status of the data in the national dataset.
As of December 2022, seventeen states (including Washington D.C.) publicly share service area boundary data.
Other states may have a smaller subset of service area boundary data available to the public, full datasets that are not publicly available, or lack a centralized repository of service area boundaries. The agencies involved, the funding sources leveraged, and the policies used for both gathering and using service area boundary data vary from state to state. They present a spectrum of options that could be adopted and adapted by other states hoping to produce and use service area boundary data.
Explore this map to learn more about state-specific data, how it was created and where there are opportunities to improve our understanding of who gets drinking water from who.