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. This dataset is a combination of state-provided data and EPA’s high quality approximations where state-data wasn’t available. In addition, they have created comprehensive data standards to facilitate harmonization, use, and analysis of this data for decades to come. To learn more about your state in this dataset, click here.
We still encourage you to explore the agencies involved, the funding sources leveraged, and the policies used for both gathering and using service area boundary data that varies 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 see which states’ data is included in the national EPA dataset and which states have modeled data. In both cases, this playbook is relevant for tips and processes for how to develop and maintain service area boundaries data to improve our understanding of who gets drinking water from whom.