chlorinated water
Technical term for water that has been treated with chlorine, typically for disinfection.
See also: 塩素処理
Chlorinated water is used in the pool.
塩素処理 is the process of chlorination; 塩素処理水 is the resulting chlorinated water.
Compound of 塩素 (chlorine), 処理 (treatment), and 水 (water).