K.V.
I see that you live in Oakland....try the Downtown Berkeley YMCA. They have 3 pools one of which is always heated to about 90 degrees. It's 3-3.5 ft. deep. If you aren't a member, you can become a program member to take your son swimming. They have a class called Tiny Waves, or something like that, just for babies & parents. They also have Family Swim times throughout the week. We've been members there for years. Our older son, now 7rs, started swim lessons there at 3 yrs & is now a fantastic swimmer. Our 2.5 yr old will start lessons this summer but has been swimming in the warm pool since about 7 months. I'm not sure what the chlorine levels are but due to the heat of the pool, you can smell it. I think you'd be hard-pressed to find a public pool w/minimal chlorine as they want to keep it germ-free. We started our younger son in that pool at about 7 months after I talked to our ped about it & she assured me that as long as you shower them off after swimming, they'll be fine. He's had no chlorine-related reactions & LOVES to swim! Hope this helps & good luck!