• Since Monday, to cope with rising energy costs, it has been one degree cooler in the majority of Nantes swimming pools.

  • If some swimmers had more difficulty entering the water, the measure is currently well perceived by the majority of those whom 20 Minutes met at the exit of the Jules-Verne swimming pool, this afternoon.

One degree less in water, up to two degrees less in air.

Since Monday, the atmosphere has been a little cooler in the majority of Nantes swimming pools.

Although some swimmers did not notice the change, it seems that entering the pool was a little more complicated for some of them... "Ah, I thought it was colder," reacts Yann , 44, who goes four times a week to the Jules Verne swimming pool, like this Monday.

The proof, it took me one or two more lengths to get used to.

Behind him, a small sign has been posted to warn users: "to cope with the exceptional rise in the cost of electricity and gas", the water in the sports pool will now be heated to 27°C (at instead of 28).

Until then at 29 degrees, the learning basin will oscillate between 28 and 28.5.

The measure, unveiled last week by the mayor of Nantes, is generally supported by the swimmers crossed this afternoon, in the name of "the collective effort".

“We have no choice, reacts Manon, still with damp hair.

Once you chain the lengths, you don't really see the difference.

And I prefer that to closing swimming pools, like in other cities!

“Coming to take a dip with his 4-year-old daughter, whose mistress is sick, Alan is going in the same direction.

“Anna was a little cold at the start but we got moving, and it went very well.

It's not too embarrassing for the moment… I hope to still be able to say that in the middle of winter!

“Because at the exit of the swimming pool, some fears are still heard.

And especially among older users.

"It's too cold to splash around a bit or if you want to relax before getting out of the water," said a septuagenarian.

My hands are still cold!

It's a shame, but I may have to give up or do something different.

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Towards a “more virtuous energy relationship”

If recommendations exist as to the ideal temperature of a swimming pool, it is the comfort of users, diverse and varied, which serves as the main indicator.

Questioned by 20 Minutes, the French Swimming Federation indicates that one can "actually request a reference value of 26°C for use of swimming pools in a daily configuration", i.e. the temperature recorded from this Monday in the basins of swimming pools Lille, where a lowering of 2 degrees was decided.

"This type of measure allows us all to project ourselves into a more virtuous energy relationship with our swimming pools, but only very weakly resolves the economic issues of the current crisis", adds the FFN.

In Echirolles (Isère), where the system has been in effect since July 1,

But at the end of the Jules Verne swimming pool, some swimmers would like the communities to go further.

“Cold water doesn't bother me, but it would need a real renovation in good and due form, thinks Pauline.

There are swimming pools that are powered by solar panels, so why not here?

Yann himself wonders about the relevance of the swimming pool plan of the city of Nantes, which notably provides for the construction of a Nordic pool in the city center.

"We have to reconsider the project," he said.

It's nice, but I'm not sure it's a priority anymore.

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In Nantes, the Petit Port swimming pool, managed by NGE, is not affected by these temperature drops.

“The cold units of the ice rink used to make ice give off heat which is reused to heat the pools through heat exchangers, indicates the town hall of Nantes.

This operation makes it possible to heat the water in the swimming pool without the external supply of any energy source.

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