Only one site out of 58 deemed “of insufficient quality”: the bathing waters of Aveyron highly rated by the Regional Health Agency

Only one site out of 58 deemed “of insufficient quality”: the bathing waters of Aveyron highly rated by the Regional Health Agency
Only one site out of 58 deemed “of insufficient quality”: the bathing waters of Aveyron highly rated by the Regional Health Agency

In Aveyron, 58 sites have been identified and are therefore subject to these samples.

Like every year, the Regional Health Agency (ARS) publishes its ranking of swimming sites in Occitanie and therefore in Aveyron. This classification, established over 4 years, is “representative of the water quality of the bathing site”, according to the ARS. It is therefore less subject to “isolated peaks of pollution” and takes more account of “chronic pollution”. .

In Aveyron, 58 sites have been identified and are therefore subject to these samples (at least sixteen spread over four years), or 306 in total. Only 51 sites are classified today, the other seven have “a bathing profile being developed or were declared less than four years ago”, according to the Regional Health Agency.
In detail, 36 sites are classified in the “Excellent quality” category; 10 “Good quality”; 4 “Sufficient quality” and 1 “Insufficient quality”.

Temporary ban

In 2023, only two sites were temporarily closed after a non-compliant result. These were the upstream beach of Pont-Vieux in Saint-Geniez-d’Olt, twice (in July and August) and the beach of Saint-Rome-de-Tarn.

Localized storms and runoff into waterways are the main causes of “impaired water quality.” After new checks, “these beaches were reopened to swimming in less than five days, in complete safety”.

Furthermore, the detection of a proliferation of cyanobacteria on two bodies of water led to a temporary ban on swimming at four sites on Lake Villefranche-de-Panat from August 21 to 31 and on Lake Val de Lenne in Baraqueville. from August 8 to 31.

The proliferation of planktonic cyanobacteria “is unpredictable and can develop very quickly, sometimes in less than a day. Although it is not alarming, this phenomenon can nevertheless present a danger to human and animal health.”

Microbiological parameters

Precisely, throughout the swimming season, cyanobacteria are periodically tracked by analysis and monitoring, in particular by noting the presence of foam at the edge of the body of water, by supervisors.
Based on the calendar of the bathing season, from June 15 to September 15 (sometimes more restricted for fresh waters), the control program begins with a sample taken between 10 and 20 days before it starts.

On average, five samples are taken for fresh water and between 10 and 20 samples for sea water. The quality of bathing water is assessed using two types of indicators: on the basis of field observations, but also microbiological parameters.

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