Califorānia Wastewater Surveillance Network Dashboard
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This dashboard provides an overview of wastewater surveillance of SARS-CoV-2 in California, with wastewater samples collected and analyzed by CDPH Cal-SuWers Program, wastewater utilities, and academic, laboratory, and other partners across the State. These partners together form the California Wastewater Surveillance Network (CA WWS Network).
The dashboard includes maps displaying outlines of each participating wastewater treatment plant service area (aka sewersheds). These areas represent the wastewater collection areas for each respective treatment plant and show where wastewater is being monitored for SARS-CoV-2 within the CA WWS Network. For each sewershed, the dashboard also shows the levels of SARS-CoV-2 found, over time.
This dashboard is updated daily, MondayāFriday as new data are available, by 5:30pm.
Note: Wastewater utilities typically collect samples on Sunday, Monday and Wednesday. Utilities in turn ship the samples to the laboratory the next day (+1ā2 days), and it takes some time (+1 to 3 days) for the lab to process the sample and submit that data to our team. Additional quality checks are conducted by the CDPH Cal-SuWers team (0 to +1 day). Ultimately the turnaround is typically 3ā6 days from when samples are collected to when the results appear on this dashboard.
For questions about this project, data, or dashboard, please contact the CDPH Cal-SuWers Team at wws@cdph.ca.gov.
For data from WastewaterSCAN ā content on this site is licensed under CC BY-NC 4.0. All results are understood to be based on inputs that are experimental in nature, and are not intended to diagnose or treat any disease. The results are provided āas isā and without warranty of any kind. Stanford is not liable for any claim arising out of or in connection with the disclosure of these results. By accessing or copying any part of the database, the user accepts the terms of this license. Anyone seeking to use the database for other purposes or for research is required to contact Alexandria Boehm (aboehm@stanford.edu). For additional information please visit the WastewaterSCAN webpage.
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Instructions for using this dashboard:
1. Select the sewershed site from the ā1. Select Sewershedā filter (top left)
- Once a sewershed is selected, two reactive maps will display:
- āāāāāOverall Sewershed Site Locationsā (right side) will highlight the sewershed location within the overall California region, and
- āSewershed: [Sewershed Label]ā (middle side) will display a zoomed-in map of the sewershed with its geographic boundaries. Sewershed Label is generally formatted as: County (City or Treatment Plant name)
- Note: only one sewershed can be selected
2. Select a single data source from the ā2. Select Data Sourceā drop-down filter (top left)
- āSome sewersheds may have wastewater data that was analyzed by multiple laboratories.
- These include: CDPH Drinking Water and Radiation Lab (DWRL), CDPH NWSS analyzed by UC Berkeley, WastewaterSCAN, Healthy Central Valley Together (HCVT), CDPH NWSS Commercial Contract (Biobot, LuminUltra).
- Note: only one data source can be selected. De-select a data source by unchecking the box next to the data source name.
3. Select the range of dates using ā3. Select Sample Dateā filter (middle left)
- āUse the slider tool to select a desired date range.
- Date range selectable is from December 16, 2020 to present day; however data first became available for different sites and laboratories at different times.
- Note: The SARS-CoV-2 concentrations graph (y-axis) will adjust depending on the selected date range; scaling automatically adjusts to the maximum concentration during that date range.
4. View results āSARS-CoV-2 Concentrationsā (bottom left image)
- After completing the three filters above (steps 1ā3), the āSARS-CoV-2 Concentrationsā graph (bottom left image) will display a plot of wastewater concentrations, with site selected in the main title (sewershed label).
- The āConcentration Unitā (located above the graph) shows the units of the SARS-CoV-2 concentration plotted on the y-axis: āSARS-CoV-2/PMMoVā indicates SARS-CoV-2 concentrations that are normalized by a human fecal indicator called Pepper Mild Mottle Virus (PMMoV), and ācopies/L wastewaterā indicates raw SARS-CoV-2 concentrations in wastewater that are unadjusted (see details below).
- The selected āData Sourceā laboratory is indicated.
- Points represent individual sample results. Line represents an average of the concentrations of all samples that fall within 10 days of that date (center aligned).
To view another sewershed, select the sewershed on the first filter (top left side) again along with all other filter criteria of āData Sourceā and āSample Date.ā
Additional features:
Adjust the Overall Sewershed Site Location map to see more of the map
- āāTo zoom in/out, scroll on the map.
- āTo move the view, click on the map and drag the cursor to desired location.
To view an accessible version of data used in the CDPH Wastewater Surveillance Network Dashboard, download the CDPH Wastewater Surveillance Network Dashboard Accessible Data Excel (CSV) file.ā