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State of California Open Data

Compiled SWP PFAS Data

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Published by:
California Department of Water Resources
Last updated:
January 17, 2026
File details:
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Description:

A compiled list of per- and polyfluoroalkyl substances (PFAS) analysis results for the SWP Routine Water Quality Monitoring Project. These samples were collected three times per year at three sites, later increased to four times per year at six sites. Sampling for PFAS compounds began in 2020 and all results are available in this file.

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