Microbiological quality of bathing waters in Central Uusimaa good
On 5 June 2025, the Central Uusimaa Environmental Centre collected samples for monitoring bathing water quality from the largest public beaches in Järvenpää, Mäntsälä, Tuusula and Nurmijärvi, i.e. the so-called EU beaches. The samples were tested for Escherichia coli bacteria and intestinal enterococci. The microbiological quality of the bathing water met the quality requirements set for bathing water. No blue-green algae was observed on the beaches. Bacterial concentrations were very low.
The temperatures of the bathing waters varied between 15.7 and 18.4°C. The warmest water was found at the Häklin, Urheilupuisto and Rusutjärvi bathing beaches in Tuusula, and the coolest water was found at the Tiiran bathing beach in Nurmijärvi. The samples were taken last Thursday (5 June), which was a cooler period than normal for this time of year. Air temperatures remain fairly low due to rainfall, so bathing waters are likely to remain cool for the time being.
Swimming water samples were taken from the following lakes and shores:
- Järvenpää: Lake Tuusula, Tervanokka beach
- Tuusula: The ponds at Häklin and Urheilupuisto, and the Rusutjärvi swimming beach
- Mäntsälä: Keravanjärvi (Mäntsälä municipal beach) and Saari beach
- Nurmijärvi: Sääksjärvi beach and Tiiran beach (Valkjärvi).
Information on bathing water quality
The Central Uusimaa Environmental Centre website has a PDF table of swimming beach results, which is updated with the results of water samples taken during the swimming season. The sample results can also be found on the notice boards at the swimming beaches.
Blue-green algae sightings can be monitored on the Järvi-meriwiki website maintained by the Finnish Environment Institute, where anyone can also report their own blue-green algae sightings.
For further information, please contact Health Inspector Tapio Multanen, +358 40 314 4720, tapio.multanen@tuusula.fi.
This content has been translated using AI