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State of California
Dataset Description
Note: This dataset is no longer being archived as of March 17, 2025.
The California Department of Public Health (CDPH) aggregates confirmed cases of COVID-19 by sewershed restricted locations. Confirmed cases are defined as individuals with a positive molecular test, which tests for viral genetic material, such as a polymerase chain reaction test.
Since wastewater data available starts from January 1st, 2021, rather than the beginning of the COVID-19 pandemic in 2020, the cumulative counts of the confirmed cases variable are shown as “NA”.
Please note that values less than 5 for confirmed cases are masked (shown as “Masked”) if the sewershed population size is 50,000 or fewer, in accordance with de-identification guidelines. Values less than 3 for cases are masked (shown as “Masked”) if the sewershed population size is between 50,001 and 250,000. For no confirmed cases reported, values are set as zero.
Organization: State of California
Organization URL: https://catalog.data.gov/organization/california
Last updated: 2026-01-26T17:41:37.082740
Tags: COVID-19 Coronavirus, california department of public health, covid, covid-19, covid19, wastewater