The shores of the Vantaanjoki River were in worse condition than the seashores.
Pikkukoski the problem of exceptionally poor bathing water on the beach has become apparent. One of the culprits is probably the birds that pollute the water of the Vantaanjoki River in Pikkukoski with their faeces.
In the summer, the city advised residents to avoid swimming on the beaches of Marjaniemi, Pikkukoski, Pakila and Tapaninvainio due to occasional elevated intestinal bacterial concentrations.
All The samples taken from the banks of the Vantaanjoki River in connection with heavy rains were of poor hygienic quality, the city says. Thirteen percent of the samples taken during the rainless season were of poor quality.
After heavy rains, the sample result returned to normal levels in Vantaanjoki after an average of two replicates, in an average of ten days.
At that time, the city could not assess why the bathing waters in these areas are clearly inferior in quality to other areas. The bathing waters in Helsinki were mainly of good quality last summer, the city informs.
Read more: Swimming on the shores of Pikkukoski and Marjaniemi is not recommended next summer
In Pikkukoski based on the samples taken, the gut-derived bacteria were derived from bird droppings that run off the ground into the water with rain. Heavy rains were found to have a clear detrimental effect on the water quality of the Vantaanjoki River.
The results also provided indications of human faeces, which may indicate wastewater discharges.
However, according to the city, the surveys carried out during the year did not find any sewage leaks or problems in the wastewater systems of the beaches in the vicinity of the beaches of Vantaanjoki or Marjaniemi.
On the Helsinki side, the beaches of Vantaanjoki are Pikkukoski, Pakila and Tapaninvainio.
In Helsinki so far there has been no epidemic caused by bathing water. However, climate change and global warming are increasing the risk of epidemics at beaches, the city said in a statement.
In the summer, the city also sought to prevent epidemics by inspecting the cleanliness, hygiene and waste management of the beaches during the summer. Deficiencies were mostly found in the cleanliness and hygiene of the beach toilets.
There are a total of 25 public beaches in Helsinki, whose hygienic bathing water quality was monitored from mid-June to the end of August. 113 samples were taken from beaches at sea, of which only 7% were of poor hygienic quality.
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