The water quality of Kagerplassen 't Joppe Merenwijk at Leiden

What is the swimming water like? Kagerplassen 't Joppe Merenwijk? On the water map below you'll see the swimming location in its immediate vicinity. On the right of on this page you will find all information about the current weather, at the bottom of the swimming spots in the area.



Open the Water Map for Leiden in full window
't Joppe is a southern located lake which part is of the Kagerplassen on the east of Warmond. De swimmingwater location 't Joppe Merenwijk located on the island 'The strands' on the east of the lake Here is a sunbathing area present. The area is enclosed by nature and recreation area.



Swimming spots nearby

1. Camping spijkerboor, zevenhuizervaart: water quality is good
2. Kaageiland: water quality is good
3. Kagerplassen 't joppe merenwijk: water quality is good
4. Kagerplassen 't joppe westoever: water quality is good
5. Klinkenbergerplas noordwestoever: water quality is good
6. Klinkenbergerplas westoever: water quality is good
7. Vadedoplas: water quality is good
8. Waterspeelplaats cronesteijn: water quality is negative swimming advice


The weather in Leiden, now:


Half bewolkt

The current weather in Leiden is Half bewolkt
Wind Force 3 bft | 7.8 Knopen | 14.4 km/h
Wind direction NW
Wind arrow
Today: Eerst nog enkele (onweers)buien, vanaf vanavond droog


Extended weather forecast for Leiden (click)



Swim at Kagerplassen 't Joppe Merenwijk

The bathing water quality at Kagerplassen 't Joppe Merenwijk is good
Last check 15-07-2024

E.coli: 190 n/dl (below 1800 is ok)
Intestinal enterococci: 15 n/dl (under 400 is ok)
Fresh water
Bicycle shed
Information board
Waste bins

Water temperature


Measurement time: 21 juli, 07:10
(more info)
Zijldijk, Leiden
Do you have any questions about this swimming location? Contact the administrator:

Gemeente Teylingen
Phone: 0252-783300


Photo of Kagerplassen 't Joppe MerenwijkFoto: Gemeente Teylingen

Information board

The information board at the swimming location Kagerplassen 't Joppe Merenwijk


The water temperature value comes from the nearest official Rijkswaterstaat measuring station and is an approximation for this location. Always take local conditions into account, it is usually colder in deeper water than on the shore!
The water quality measurement is based on the amount of bacteria in nanograms per deciliter (n /dl). In this case it concerns the intestinal bacteria Escherichia coli (E.coli) and intestinal enterococci, which occur in the feces of both animals and humans. A suddenly high value is often related to bird droppings in the water, for example, but can certainly also have other causes. It is unwise to swim in water where these values exceed the standards. The water manager also inspects the bathing water areas for other types of pollution, such as blue-green algae or other toxic algae and general safety features.

More information about this swimming location can be found at

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