You can always go to Montecito Hot Springs.
50% of the (captured) water does not belong to the water company and the public does exert it's own lawful claim to a portion of those waters.
I don't know whom was sneaking into the facilities in 1910 but factually people always FREELY made use of the water in the creek beds especially on the west fork. In 1910 there were small 1 inch pipes that transported water from the spring source to the soaks and plunges. A significant portion remained in the creek bed.
It's not like the fees were cost prohibitive when one did choose to make use of one of the plunges at the bathhouse. Even though the last incarnation of the springs were called the Million Dollar Club it was not that elite and exclusive after all.
Let's talk about kids of 1910 but focus one why law abiding and well behaved adults today would benefit by ability to soak in these springs.