Did you know that?

DUCK FLEAS

Duck fleas" are a natural phenomenon, unrelated to pollution.

Even on a beach with impeccable bacterial hygiene, there can be a risk of developing "bather's dermatitis" or "duck flea", particularly in shallow waters rich in vegetation and with temperatures above 20°C, where it is therefore advisable to limit swimming. This dermatological condition is caused by the larvae of a duck parasite that penetrates the human epidermis and causes severe itching, fortunately not serious.

To prevent the rash from appearing, it is recommended to shower immediately after bathing and to rub vigorously with a towel. If the rash does appear, scratching should be avoided to prevent secondary bacterial infections. The rash disappears without a trace within 10 to 20 days.

WATER QUALITY ANALYSED BY THE AUTHORITIES

Bathing water under control!

The classification of the quality of the bathing water on the beaches of Lake Geneva is established on the basis of bacteriological analyses carried out during the previous bathing seasons by the competent services of each canton and department. When a beach is temporarily polluted for particular reasons, the authorities inform the population.

The authorities base their classification on :

  • in Switzerland (Vaud, Valais, Geneva): on the Recommendations concerning the analysis and evaluation of bathing water quality (lakes and rivers) of the FOEN and the FOPH (2013);
  • in France (Haute-Savoie): on Directive 2006/7/EC of the European Parliament and of the Council of 15 February 2006.

THE NATURAL ENVIRONMENTS OF LEMAN

The banks of the lake offer a diversity of environments that are home to a rich and varied fauna and flora: alluvial forest, river mouth, stony shore, reed bed or aquatic meadow, to name only the most important.

The good health of the species that live in and depend on these natural environments depends on the number of natural sites around the lake, their tranquillity and the exchanges between them.

In water, everything is obviously connected. On the other hand, the artificialization of the banks for more than two centuries with riprap, walls, quays, harbours and roads has greatly reduced the number of natural sites and fragmented them.

The consequence? Habitats are weakened, as are the species that take refuge in them. It is urgent to preserve those that remain.

The reedbeds of Lake Geneva: a rare and fragile natural jewel that Fabwildpix shows us and some precautions to take if you paddle:

AQUATIC VEGETATION

Discover with the youtuber Fabwildpix the macrophytes, these often misunderstood lake grass beds that we confuse with algae, as well as the living species that populate the bottom of our Lake Geneva

WHERE TO FIND OUT MORE ABOUT WATER QUALITY?