[ His eyes are still closed when he makes a curt gesture out toward the direction the water dumped over him will very slowly flow, using the rest of his water to finish rinsing off all the soap and shampoo that remains. ]

Are you familiar with how filtration works? That's the whole idea. You run water through enough dirt and rock and the rest, and the impure things in it get pulled out so that what joins back in with the water supply is better than how it started out.

[ Think of it like cultivation... purified and refined through a system of techniques. This one just happens to be using the ground itself to sort out the impurities from water, and since he's not personally worried that shampoo and soap is the worst compared to deadly metals or such things, it's still the same general principle. Or so he thinks.

That said, now rinsed, he stands and quick steps to the pool, slipping in with a practiced ease and... promptly realising he left his towel for after further back from the water. What a pain!

He ducks himself under the surface, gathering his hair back off his face and resurfacing, one hand twisted in the mass of it. He can manage a sloppy, twisted bun like this, that seems more practical if he just wants to soak for a while... ]