Splash pads in Ontario, California

John Galvin Park is Ontario's big multi-purpose regional park, and the splash pad is the family magnet during Inland Empire summers when temperatures push past 100. It's tucked between the lake, the sports fields, and the playground, so the day stretches naturally — splash, snack, run loops on the grass, fish in the pond. Free parking is plentiful, restrooms are clean during peak season, and shade trees ring the play area. Best for toddlers through age ten; the pad has both ground sprays and arching jets. Parent gotcha: the Inland Empire bakes — the deck gets blazing hot to bare feet, water shoes mandatory. California drought regulations can also force shorter daily run hours. Pair with an early-evening visit when the heat backs off and the sky over the San Gabriels lights up.