Frequent Questions

How does The Substance Registry System (SRS) benefit the EPA?

The SRS, like the other registries, are important for:

-- information management (SRS catalogs all the substances that are tracked or regulated across EPA)

-- discovery (which EPA programs track or regulate a substance and by which synonym)

-- data quality (helping programs use correct synonyms)

-- integration (if EPA Program A uses the name "Phenyl methane", while EPA Program B uses the name "Toluene", SRS provides the cross-walk to show how data from these two programs can be linked by substance)

-- standardization (SRS also supports the Chemical Identification Data Standard, developed jointly between EPA and its state and tribal partners. This standard requires the assignment of key identifiers for each substance, including an standardized name that can be adopted by EPA program offices)

To access SRS go to:

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