水質汚染 すいしつおせん Meanings Noun water pollution Kanji 水 water. Read as スイ. 質 quality. Read as シツ. 汚 dirty 染 stain. Read as セン. Example sentences ときどきタンカーがこぼす石油も水質汚染を増大させる。The oil often spilled by tankers also adds to water pollution. しばしばタンカーがこぼす石油も水質汚染を増大させる。The oil often spilled by tankers also adds to water pollution. Jinuma: Japanese Dictionary · Word lists