Its terrible to admit that this is happening, but its been going on for a long time in CAli. This snip is from a 2015 expose' about San Bernardino from the LA Times:
Caption: Liz Gonzales, 50, bottom, and Tim Wilburn, top, bathe together in the ‘spa,’ a drain pipe near the Second Street bridge:
https://graphics.latimes.com/san-bernardino/