Water odour

Odour that emerges from water, usually due to a multitude of different molecules, in very low concentrations, mixed with the air that is breathed. For example, open sewers, discharges from an organic chemical industry (pharmacies, insecticides), wastewater treatment, intensive livestock farming (pigs, cattle, poultry or other) or land application (slurries, sewage sludge) can be a source of olfactory nuisance.