treated water; treated wastewater; treated sewage
Refers to water that has undergone treatment to remove contaminants, commonly used in discussions of wastewater management and environmental discharge.
Before releasing treated water into the river, we test its quality.
This factory reuses some of the treated water for cooling.
chlorinated water
Compound of 処理 (treatment) and 水 (water). A modern technical term with no special historical derivation.