Satsvarupa dasa Goswami: He could appreciate different tastes of water. We would make efforts to get him the best water from special sources, like Bhagatiji's well in Vrindavana. He would drink quite a bit of water for health and digestion. He would make comments about it as we sat with him in his room watching him drink water. But don't draw his water from a bathroom! Pradyumna dasa asked how it is actually different if the water comes from the bathroom, provided one doesn't know where the water comes from. Prabhupada replied that it would affect the mind, even if you didn't know where the water came from, because the bathroom is a contaminated place.