Piscine Intercommunale à Roissy-en-France

This is a very nice, very clean (water and building), and well-ventilated pool and locker area. The public lap swimming hours are irregular, and pretty short (sometimes only 1.5 hours), so be sure to check before you go, and understand that they evacuate the pool 15 minutes before the sessions end, so get there when it opens. Flippers and kickboards are available to borrow.

There are rules: No shoes beyond the entry area. (There is a bench to sit on while you remove your shoes, and a rack where you can leave them.) Bathing suits must meet certain standards: No board shorts for men and no cutoffs. Speedo type suits, cycle short type suits, or short boxer type suits are fine. No wetsuits. No long-sleeved suits for women. Bathing caps are required for long hair.

This all sounds a bit much, but in fact it is a delightful pool, and the people who work there are very pleasant. I used the facility several times this month. The fact that it is an easy walk from the hotels in the CDG area is an added bonus.

The pool was divided into two wide lanes plus an open area for water walking, etc. Each of the two lanes had 4-5 swimmers with a mix of slow and fast swimmers in a circle system. The water was clean and clear with low chlorine and a good temperature (not too hot). They close the pool 15 minutes prior to the listed times on their website, so plan accordingly.

I was charged only €3 for entry (despite obviously not being a resident) and was not charged for a locker. Ask for a token for the locker, which is put in the back of the door, then turn the key (which you can strap to your ankle) to remove it. The locker rooms were clean.

It's an easy walk from the hotels in the Roissey town center (Marriott etc.). Bus service is available from the hotels near the Aeroville Mall, and Uber is also readily available.