Community pools: DeFremery (Oakland, summer-only), ECCL (Emeryville), Roberts Pool (Oakland Hills). McNears Beach is in the Marin dashboard.
Best kid features: East Oakland Sports Center (indoor water park with slide + lazy river + zero-depth entry), San Leandro Family Aquatic Center (waterslide + zero-depth + water play structure), Larkey Park (Walnut Creek — All Abilities Splash Pad + slides), Heather Farm (Walnut Creek — summer inflatables).
Warm-water options: Trefethen therapy spa (Mills/Northeastern, 103-104°F), Richmond Plunge (historic indoor saline natatorium), Berkeley YMCA (one of two indoor pools is kid-warm).
UC Berkeley drop-in policy: Spieker / RSF / Hearst do NOT take public drop-ins. Strawberry Canyon (seasonal May–Oct) and Golden Bear (year-round indoor) DO accept the public — verify current rates on UC Berkeley Recreation site.
Skipped (private members-only): Bay Club, Equinox, ClubSport, 24 Hour Fitness, Athens Plumas Club, Claremont Country Club, Orinda Country Club. These have pools but no general public family-swim access.
Pleasant Hill YMCA (~40 min from SF, ~20 min from Berkeley) is included because it has the most generous family-swim hours in the YMCA East Bay network — worth the drive on weekends.
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