
No heating and no chlorine. The same water every summer since 1974, and the same queue at the kiosk in March.
The spring under the north bank runs at the same temperature from May to October. Nothing heats it and nothing is added to it. The basin turns over twice a day, which is why the water stays clear even in August.

Doors at seven in the morning, last swim at nine. Mondays the basin is drained and the gate stays shut.
Counted at the turnstile. When it is full you wait on the lawn above, and that rarely takes more than twenty minutes.
Sold at the kiosk from the first Monday. About four hundred go in a single morning, so people queue before eight.