Tracing Demo 2: Downstream of Industry Facilities
Demo Question: What samples are downstream of Waste Treatment Facilities (NAICS 5622) in Indiana?
Use Case Area: Trace Contamination Pathways
This demo shows how SAWGraph can use industry classifications and hydrologic flow paths to identify sample results downstream from a selected facility type. It demonstrates how the same tracing pattern can be applied to different industries and locations.
What This Demo Connects
Facilities and Industries
Waste treatment facilities in Indiana identified through NAICS Industry Group 5622 and related facility classifications.
Hydrologic Pathways
Streams and downstream hydrologic connections used to trace surface water pathways from the selected facility locations.
Environmental Samples
Sampling locations associated with downstream areas, allowing sample results to be examined in relation to facility types and hydrologic pathways.
Demo Results
The map shows waste treatment facilities, streams, and environmental samples returned from the SAWGraph queries for Indiana. Results reflect the datasets represented in the graph, the selected industry classification, the geographic extent, and the conditions of the queries.
The map distinguishes several types of waste treatment and disposal facilities, together with mapped streams and sample locations. A downstream relationship can help identify samples that may warrant further investigation, but it does not by itself establish that a facility released PFAS or caused a downstream measurement.
The map is interactive. Pan and zoom to explore the results, use the layer control to show or hide different types of features, and explore mapped features for additional information.
Downstream Samples and Waste Treatment Facilities
This map shows environmental samples together with streams and waste treatment facilities in Indiana. The analysis begins with facilities in NAICS Industry Group 5622 and follows downstream hydrologic relationships to identify associated sample locations.
Available layers include samples, streams, waste treatment and disposal facilities, hazardous waste treatment and disposal facilities, other nonhazardous waste treatment and disposal facilities, solid waste landfills, and solid waste combustors and incinerators.
Code and Query Resources
View the notebook used to run the downstream tracing workflow and generate the interactive map.