The water quality of Zegerplas Zuidoever at Alphen aan den Rijn
What is the swimming water like? Zegerplas Zuidoever? 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 Alphen aan den Rijn in full window
The Zegerplas is located on the east of Alphen on den Rhine and is a former sand extraction lake from the years 70. The lake is part of a recreation area that on the westside is bounded by the urban area of Alphen on den Rhine.
Swimming spots nearby
2. Zegerplas zuidoever: water quality is warning
The weather in Alphen aan den Rijn, now:
5.3°C
Licht bewolkt
Wind Force bft | Knopen | 2 km/h
Wind direction NO
Today: Droog, af en toe zon en vooral in het zuiden warm.
Extended weather forecast for Alphen aan den Rijn (click)
Staying in the area?
Accommodaties in de buurt zoeken...
Swim at Zegerplas Zuidoever
Summary
Measurements
E.coli15 n/dl
Enterococci15 n/dl
Cause
There is a warning for blue algae at this swimming spot. So you run the risk of skin irritation and stomach/intestinal complaints if you swim here.
There is a warning for blue algae at this swimming spot. So you run the risk of skin irritation and stomach/intestinal complaints if you swim here.
Additional warning
There is a warning for blue algae at this swimming spot. So you run the risk of skin irritation and stomach/intestinal complaints if you swim here.
There is a warning for blue algae at this swimming spot. So you run the risk of skin irritation and stomach/intestinal complaints if you swim here.
Water temperature~17.1 °C
Measurement timeQuality: 04-05-2026Temperature: 8 mei, 20:10
Facilities & contact
Information board
Fresh water
Sandy beach
Waste bins
Fresh water
Sandy beach
Waste bins
Address
De Bijlen, Alphen aan den Rijn
Administrator
Gemeente Alphen aan den Rijn
gemeente@alphenaandenrijn.nl
Phone: 14 0172
De Bijlen, Alphen aan den Rijn
Administrator
Gemeente Alphen aan den Rijn
gemeente@alphenaandenrijn.nl
Phone: 14 0172
Notifications about bathing water quality:
Omgevingsdienst Midden-Holland
zwemwater@odmh.nl
0800-9036
Website: http://www.odmh.nl
Omgevingsdienst Midden-Holland
zwemwater@odmh.nl
0800-9036
Website: http://www.odmh.nl
Photo
Information board
Details
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.
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.