Spread of the virus

Virus particles in wastewater Voorne aan Zee

If you are infected with the corona virus, there are often virus particles in your stool. Wastewater is collected at treatment plants and tested for virus particles at RIVM.

Because there are no more GGD-tests and less self-testing, waste water research is important to monitor the virus and to recognize a possible revival of the virus.

Last values obtained on Wednesday, 21 February 2024. Is updated on Wednesday.

Source: RIVM

Number of virus particles per 100,000 inhabitants

155 less than the previous day value

Voorne aan Zee has 73,037 inhabitants connected to the sewer.

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.

Value from Monday, 12 February 2024 - Sunday, 18 February 2024 · Source: RIVM

Number of measurements per week


3 of the 3 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.

Value from Monday, 12 February 2024 - Sunday, 18 February 2024 · Source: RIVM

Number of virus particles over time

This graph shows the weekly average of the number of virus particles in this municipality over time per 100,000 inhabitants. Below, the location of the wastewater treatment plant (WWTP) can be selected to see the particles per location.

Select a period
The map shows "Show all"
The map shows "Last 30 days"
The map shows "Last 3 months"
The map shows "Last 6 months"
The map shows "Last year"
Select a WWTP
The map shows "Show none"
The map shows "Heenvliet"
The map shows "Hellevoetsluis"
The map shows "Oostvoorne"
Graph sewage installation over time. Use the keyboard to navigate through the time in the graph. With the left and right arrow keys you can move backwards and forwards in time. Use the left angle bracket < to go back and the right angle bracket > to go forward. With page-up and page-down you make bigger steps. Use the Home key and End key to go to the beginning and end of the timeline.
  • Average number of virus particles

Source: RIVM