Clean is one of my finite areas of interest, lol. Any favorite destinations that have "water" where you actually feel clean when you get out? I guess it's expected if it's clean, it's likely glacier melt - here in the PNW... so I suspect clean likely means FREEZING! It's all about compromise.
Photo credit: http://rebloggy.com/post/lights-lake-holidays-mypost-night-lanterns-bed-nature-travel-beach-sea-calm-show/89767707261