悪水[akusui] undrinkable water
井戸水[idomizu] well water
一衣帯水[ichiitaisui] (being separated only by a) narrow strip of water
一水[issui] current (of water)
溢水[issui] inundation

飲水量[insuiryou] amount of drinking
飲料水[inryousui] drinking water
烏の行水[karasunogyouzui] quick bath
雲水[unsui] itinerant priest
塩化水素[enkasuiso] hydrogen chloride

渇き[kawaki] thirst
渇く[kawaku] to be thirsty
渇水[kassui] water shortage
渇望[katsubou] craving
渇望者[katsubousha] desiring person

のどが渇く[nodogakawaku] to be thirsty
饑渇[kikatsu] hunger and thirst
涸渇[kokatsu] drying up
渇死[kasshi] dying of thirst
渇ごう[katsugyou] adoration