Any whirlpool tub with some alterations to the recirculating plumbing should satisfy this. You'd add a diverter from the jets to another outlet that allows the

Any whirlpool tub with some alterations to the recirculating plumbing should satisfy this. You'd add a diverter from the jets to another outlet that allows the water to fall back in. The flow rate should be more than enough. You'd want to consult with an custom whirlpool tub contractor to ensure its done right. While I was writing this I was thinking someone probably has though if this. It's not only autistic people that find falling water calming. The sound and visuals of falling water I think is hard wired in to us at a primal level. So a little Google search for waterfall whirlpool tub and I found some options. They're not cheap and they are the big corner fit soaker tubs but they do exist.