Lexique beginning with W

Wastewater

Water likely to contaminate the environments in which it is discharged. It can be domestic or industrial water, for example, runoff (often loaded with oil or grease), hull cleaning water and water from toilets (also known as polluted water, residual water)

Wastewater treatment

Processes to make wastewater comply with environmental standards or other quality standards for recycling or reuse

Water depollution

Water treatment to reduce or eliminate pollution

Water retention

Action of retaining water which normally should be evacuated