I also have a deep affinity for water (no pun intended). "Big water" (oceans, great lakes), "running water" (rivers, streams, rain, run-off, fountains, faucets) and "little water" (small lakes and puddles).
I don't like "dead water" (stagnant) and I can't say that I have an affinity for "hungry water" (distilled) but I am fascinated by - and have utilized - its properties and voracious appetite.
I never considered it an "autistic thang", but perhaps...