Pure water is visibly blue because of absorption of sunshine from the area c. 600–800 nm.[87] The colour is usually easily observed inside a glass of tap-water placed from a pure white qualifications, in daylight. The principal absorption bands accountable for the colour are overtones in the O–H stretching vibrations. https://www.atooshopping.com/make-a-splash-with-water-slide-rentals-in-katy-tx/