Most of the other answers are about the park, which is obviously free. This is the Google Maps page for the pool, which is not free. The cost depends on Mountain View residency and age. Check the web page.
I believe you need to pay to get inside the pool, but the park is free
Free public park
All pricing can be found at mountainview.gov/aquatics 2020 Pricing for Recreation Swim as follows: Child: (3-17 y/o) R $4, NR $5 Adult: R $5, NR $6 Family: R $11, NR $20 Spectator: $3
Free
No its free. Please check the timing on their website.
It is free.
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