jritchie.com · weekly
C-board: Metro Vancouver, North Carolina and the West Coast
Weekly SARS-CoV-2 signals from wastewater, each measured against its own past year, and the variants in circulation.
This week in brief
Metro Vancouver 88th percentile of its past year, stable at a high level; Washington and Oregon at their year's high and rising.
Week of 16 October 2026. Each region against its own past year (newest data 10 October 2026).
- Metro Vancouver: 88th percentile of the past year · stable at a high level · last this high Aug 2025 (across a method change) · data to 4 October 2026
- British Columbia: 85th percentile of the past year · stable at a high level · last this high Oct 2025 · data to 4 October 2026
- North Carolina: 92nd percentile of the past year · stable at a high level · last this high Oct 2025 · data to 10 October 2026
- Washington: 100th percentile of the past year · rising · last this high Sep 2025 · data to 10 October 2026
- Oregon: 100th percentile of the past year · rising · last this high Sep 2025 · data to 10 October 2026
- California: 94th percentile of the past year · stable at a high level · last this high Sep 2025 · data to 10 October 2026
- Santa Clara County: 87th percentile of the past year · stable at a high level · last this high Sep 2025 · data to 10 October 2026
- United States: 79th percentile of the past year · rising · last this high Feb 2026 · data to 10 October 2026
- Canada: 62nd percentile of the past year · rising · last this high Mar 2026 · data to 27 September 2026
How these are measured: Methodology changes.
Data: PHAC, BCCDC, Metro Vancouver, CDC, WastewaterSCAN, WHO. Not produced, reviewed or endorsed by any of these agencies. Sources and licences.
At a glance
Status
Loading this week's data…
British Columbia
Metro Vancouver wastewater is the Status card at the top.
North Carolina
West Coast
United States
Canada
Variants
This week's briefing
Methodology changes
How to read this
Terms, scales and caveats
Sources and licences
C-board is an independent, non-commercial summary. It is not produced, reviewed or endorsed by any of these agencies. Values are derived from their published data; see each source for the original figures and terms.
C-board is free and non-commercial: no ads, no sales. CDC does not endorse this site. WHO does not endorse this site.
- Non-commercial terms. Required by WastewaterSCAN (CC BY-NC 4.0), Metro Vancouver, WHO and the canada.ca terms.
- No changes to quoted text. Metro Vancouver's and BCCDC's terms forbid modifying their material, so their sentences are quoted verbatim and attributed. Figures C-board derives (medians, percentiles) say so.
- Share-alike. OpenStreetMap data is under the Open Database License; C-board shows plant locations on a map and does not redistribute them as a database.
- No official status. No agency names are used as endorsements, and no logos, crests or symbols appear here.
Public Health Agency of Canada
DatasetNational Wastewater Monitoring: latest level and trend by site (wastewater_trend.csv)
National Wastewater Monitoring: weekly viral concentration history (wastewater_aggregate.csv)
COVID-19 variant proportions, Canada (covid19-epiSummary-variants.csv)C-board usesWastewater levels, trends and history by site, province and country; Canada's variant shares
LicenceOpen Government Licence – Canada
AttributionContains information licensed under the Open Government Licence – Canada. (Source: Public Health Agency of Canada, Health Infobase, National Wastewater Monitoring / Canadian Respiratory Virus Surveillance Report.)
BC Centre for Disease Control (PHSA)
DatasetRespiratory virus activity in BC: weekly summary (PDF) Licence terms unclear
C-board usesUp to two sentences quoted from its weekly respiratory summary; no figures
LicenceLicence terms unclear
No published reuse licence found. C-board quotes short passages with attribution and takes its BC figures from PHAC (Open Government Licence – Canada).
AttributionBC Centre for Disease Control (Provincial Health Services Authority), Respiratory virus activity in BC: Weekly summary, 10 October 2026; and BCCDC Wastewater Surveillance dashboard (reporting.bccdc.ca).
Metro Vancouver Regional District (Metro Vancouver)
DatasetTesting for Viruses in Wastewater
C-board usesIts wastewater testing page, cited; plant-status sentences quoted verbatim; no figures or images
Licence© Metro Vancouver, non-commercial use
Attribution© Metro Vancouver Regional District (Metro Vancouver), Testing for Viruses in Wastewater, https://metrovancouver.org/services/liquid-waste/testing-for-viruses-in-wastewater
Centers for Disease Control and Prevention
DatasetCDC Wastewater Viral Activity Level for SARS-CoV-2, Influenza A and RSV (atcp-73re)
SARS-CoV-2 Variant Proportions (jr58-6ysp)C-board usesWastewater levels and variant shares
LicencePublic domain (U.S. Government)
AttributionSource: Centers for Disease Control and Prevention, National Wastewater Surveillance System Analytics Data Set (data.cdc.gov atcp-73re); CDC SARS-CoV-2 Variant Proportions (jr58-6ysp). Accessed 16 October 2026. Content derived by C-board; CDC does not endorse this site.
DatasetState/Territory Wastewater Data for Respiratory Viruses (notice)
C-board usesThe data-gap notice on its state wastewater page, quoted
LicencePublic domain (U.S. Government)
AttributionSource: CDC National Wastewater Surveillance System, State/Territory Wastewater Data for Respiratory Viruses, https://www.cdc.gov/wastewater/respiratory-viruses/state.html (updated October 16, 2026). CDC does not endorse this site.
WastewaterSCAN (Stanford, Emory, Verily)
DatasetCDC Wastewater Viral Activity Level for SARS-CoV-2, Influenza A and RSV (atcp-73re)
C-board usesSanta Clara County site values, relayed by CDC NWSS; C-board shows their median
LicenceCC BY-NC 4.0
AttributionThese data were collected as part of the WastewaterSCAN / SCAN project, a partnership between Stanford University, Emory University, and Verily, funded philanthropically through a gift to Stanford University. Licensed CC BY-NC 4.0 (https://creativecommons.org/licenses/by-nc/4.0/); values shown are medians computed by C-board.
Values shown are medians computed by C-board from site data (changes made).
World Health Organization
DatasetTracking SARS-CoV-2 variants
C-board usesShort extracts: the names on its variant lists and their dates
LicenceWHO terms of use
AttributionSource: World Health Organization, Tracking SARS-CoV-2 variants, https://www.who.int/activities/tracking-SARS-CoV-2-variants (content last updated 28 July 2026). WHO does not endorse this site.
Natural Earth
DatasetNatural Earth map geometry
C-board usesCoastlines, borders and province shapes on the maps
LicencePublic domain
OpenStreetMap contributors
DatasetOpenStreetMap plant locations
C-board usesTreatment plant locations on the Metro Vancouver map
LicenceODbL 1.0
Attribution© OpenStreetMap contributors
Streamline
DatasetStreamline icons (Icons plan, premium licence)
C-board usesIcons
LicenceStreamline Premium Licence