Spread of the virus

Virus particles in wastewater Alphen aan den Rijn

If you are infected with coronavirus, there are likely to be virus particles in your stool. These are flushed down the toilet and end up in wastewater. By testing samples of wastewater collected at wastewater treatment plants, we can get information about the virus and can we follow the spread of the virus.

Last values obtained on Tuesday, 6 December. Is updated on Tuesday, Wednesday and Friday.

Source: RIVM

Average number of virus particles per 100,000 inhabitants

1,532
243 more than the previous value

Alphen aan den Rijn has 112,926 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.

Value from Monday, 28 November - Sunday, 4 December · Source: RIVM

Number of measurements per week

20

7 of the 7 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, 28 November - Sunday, 4 December · Source: RIVM

Average number of virus particles over time (per 100,000 inhabitants)

This graph shows the weekly average of the number of virus particles over time per 100,000 inhabitants. By selecting the location of the sewage treatment plants, the particles are displayed per location per day.

The map shows "Show all"
The map shows "Last 7 days"
The map shows "Last 30 days"
The map shows "Last 3 months"
The map shows "Last 6 months"
The map shows "Last year"
The map shows "ALPHEN KERK EN ZANEN"
The map shows "ALPHEN NOORD"
The map shows "BODEGRAVEN"
The map shows "HARNASCHPOLDER"
The map shows "LEIDEN ZUID-WEST"
The map shows "NIEUWVEEN"
The map shows "WADDINXVEEN-RANDENBURG"
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.

Source: RIVM