Service Description: This dataset contains US community water system service areas for over 44,000 water utilities.
Service ItemId: 80c6912ef14f46e480f5afd807767b4b
Has Versioned Data: false
Max Record Count: 2000
Supported query Formats: JSON
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Description: Community water system service areas describe the geographic area that receives drinking water from a given community water system. Knowing these boundaries help to connect water system data (such as, compliance status) with water system customers.
This dataset contains ~44,000 unique service areas across all 50 states. While not 100% comprehensive, these systems cover 99% of all public water system consumers. 55% of systems are sourced from state/utility databases. The remaining systems, those with no state supplied boundary, were modeled using machine learning techniques. This effort used state sourced service areas to train a model on dozens of explanatory variables including drinking water intakes in order to approximate service areas where none are publicly available.
This dataset used the 2025 Quarter 2 Safe Drinking Water Information System for establishing the universe of community water systems.
For detailed information on this dataset, visit our GitHub repository: https://github.com/USEPA/ORD_SAB_Model
***Version 1.3 was updated on 04/16/25. This update replaced Minnesota's modeled boundaries with authoritative boundaries derived from MN's lead service line inventory***
***Version 2.0 was updated on 09/19/25. This update substancially increased the number system sourced service areas. Many of these came from lead service line inventories and utility water main data, for example. With this update, 85% of the population on public water is represented by system sourced service areas.***
***Version 2.01 was updated on 09/29/25. There were minor edits to about 24 systems with duplicate PWSIDs***
Copyright Text: US EPA
Spatial Reference: 102100 (3857)
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Spatial Reference: 102100 (3857)
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Spatial Reference: 102100 (3857)
Units: esriMeters
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