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

一生涯[isshougai] lifetime
公生涯[koushougai] public life
生涯[shougai] one's lifetime (i.e. one's existence until death)
生涯教育[shougaikyouiku] lifelong education
全生涯[zenshougai] one's whole life

天涯[tengai] horizon
天涯孤独[tengaikodoku] a person without a single relative
際涯[saigai] limits
境涯[kyougai] circumstances
水涯[suigai] waters edge