If you are infected with coronavirus, there are often virus particles in your stool. These end up in the sewer. Wastewater samples are collected at wastewater treatment plants and tested by the RIVM. This way we get information about the virus and can we follow the spread of the virus.
Last values obtained on Friday, 2 December. Is updated on Tuesday, Wednesday and Friday.
Source: RIVM
Articles on this topic
This is the average of the last measurements of all wastewater treatment plants. This figure also takes account of how many inhabitants are served by a wastewater treatment plant.
Every day, the dashboard publishes the average number of virus particles per 100,000 inhabitants. To measure this number, we use the last measurement from each sewage treatment plant. Only if the last measurement is older than nine days, for example due to maintenance on the installation, is it not included in the average.
All sewage treatment plants collect samples on average four times a week, which are measured by RIVM.
This graph shows the average number of virus particles per 100,000 inhabitants over time.
Show all
This map shows the average number of virus particles per 100,000 inhabitants.
