get soaking wet much more often

So here’s the situation facing me this summer (and, really, for at least the next 5 summers):
I now have a child, who has a nanny.
This means no mid-day baths, because I won’t be home alone.
The spouse dislikes my swimming habit, and keeping the clothes on ruins her day.
Pools here have stricter rules than in the US, so even swim trunks are sometimes suspect.
The nearest lake clean enough to swim in is a half-hour drive away from the city.
The spouse could find out what time I come home in the middle of my day by asking the nanny—not out of suspicion, just it’s trickier to lie about my whereabouts.
If I go to a lake to swim, I have to somehow bring in the wet clothes for washing and drying without the nanny knowing… and she’ll know if I’m using the washing machine, of course, which might be mentioned in conversation with the spouse.
Well, if that isn’t an impossible situation, does anyone have some advice?

I try to run in sprinklers or jump in fountains but I always want someone to come with me. Maybe this goal is more to be independent but sometimes I just want someone to share the fun with.

Summer is just too short! May the weather let me get wet until I’m tired of it, so I can survive through the winter… :)

a glacier pond at the end of a steamy hot hike: priceless!