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

溺れる[oboreru] to drown
溺れ込む[oborekomu] to drown
溺愛[dekiai] doting
溺死[dekishi] death by drowning
溺水[dekisui] drowning

惑溺[wakudeki] being addicted or given over to
酖溺[tandeki] indulgence (e.g. in alcohol, women, etc.)
溺死体[dekishitai] drowned body
溺死者[dekishisha] drowned person
溺れ損なう[oboresokonau] to come near being drowned