How to Go Swimming in the Seine, If You Must | Condé Nast Traveler

"Situated near the Eiffel Tower (Champ de Mars Tour Eiffel metro), I learned this site runs daily from 10 a.m. to 5:30 p.m. and can welcome about 200 people at a time; it's the only one of the three with a secure shallow pool for children (40–60 cm deep), while the bottomless area admits swimmers 14 and older and children aged 3+ may enter the secure pool when accompanied by a parent. The site is equipped with lifeguards, pontoons, ladders, showers, lockers, and changing rooms, and follows city safety protocols—swimmers must wear yellow lifebuoys and daily bacterial testing and a color-coded flag system determine whether the water is open or closed (heavy rains can trigger temporary closures)." - Lindsey Tramuta