This monitoring method is still being developed. We hope wastewater monitoring will help us to detect and track the virus more effectively in the future. Read more about this research programme on the website of the National Institute for Public Health and the Environment (RIVM).
Average number of virus particles per 100,000 inhabitants
The calculated average is based on all the wastewater measurements collected in one week. This figure also takes account of how many inhabitants are served by a wastewater treatment plant.
Number of measurements per week
302 of the 315 sampling locations reported at least one measurement in the given week.
Sampling locations can report multiple measurements per week. The number of measurements used per location per week can differ because not all measurements are successful.
Average number of virus particles over time (per 100,000 inhabitants)
This graph shows the average number of virus particles over time per 100,000 inhabitants.