Water stress occurs when the demand for water exceeds the available amount
during a certain period or when poor quality restricts its use.
Water stress causes deterioration of fresh water resources in terms of
quantity (aquifer over-exploitation, dry rivers, etc.) and quality
(eutrophication, organic matter pollution, saline intrusion, etc.)
UNEP Freshwater in Europe Glossary
Español: Estrés hídrico
Français: Stress hydrique