| English | Catalan |
| combined waste water A mixture of domestic or industrial wastewater and surface runoff | aigua residual combinada |
| domestic waste water Wastewater principally derived from households, business buildings, institutions, etc., which may or may not contain surface runoff, groundwater or storm water | aigua de residus domèstics |
| industrial waste water Waste water that results from industrial processes and manufacturing. It may either be disposed of separately or become part of the sanitary or combined sewage | aigua residual industrial |
| waste water Used water, or water that is not needed, which is permitted to escape, or unavoidably escapes from canals, ditches, reservoirs or other bodies of water, for which the owners of these structures are legally responsible | aigua residual |
| waste water charge Imposed fee, expense, or cost for the management of spent or used water that contains dissolved or suspended matter from a home, community farm, or industry | taxa per aigües residuals |
| waste water discharge The flow of treated effluent from any wastewater treatment process | descàrrega d'aigües residuals |
| waste water disposal Collection and removal of wastewater deriving from industrial and urban settlements by means of a system of pipes and treatment plants | disposició d'aigües residuals |
| waste water legislation A binding rule or body of rules prescribed by a government to regulate the outflow and disposal of spent or used water from a home, community, farm or industry that contains dissolved or suspended matter | legislació d'aigües residuals |
| waste water load The amount of spent or used water, often containing dissolved and suspended matter, that is found in a stream or some other body of water | càrrega d'aigües residuals |
| waste water pollution The impairment of the quality of some medium due to the introduction of spent or used water from a community or industry | contaminació d'aigües residuals |
| waste water purification Processing of waste water for reuse | depuració d'aigües residuals |
| waste water quality The state or condition of spent or used water that contains dissolved or suspended matter from a home, community farm or industry | qualitat d'aigües residuals |
| waste water reduction The act or process of lessening the volume of used or spent water that is discharged from homes, businesses or industries | reducció d'aigües residuals |
| waste water sludge The removed materials resulting from physical, biological and chemical treatment of waste water | fang d'aigües residuals |
| waste water statistics No definition needed | estadístiques d'aigües residuals |
| waste water treatment Any process to which wastewater is subjected which would remove, or otherwise render harmless to human health and the environment, its constituent wastes | tractament d'aigües residuals |
| waste water treatment plant Plant where, through physical-chemical and biological processes, organic matter, bacteria, viruses and solids are removed from residential, commercial and industrial wastewaters before they are discharged in rivers, lakes and seas | depuradora d'aigües residuals |
