In association with the International Water Association Water Research has an open access companion journal Water Research X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Water Research publishes refereed, original research papers on all aspects of the science and technology of the anthropogenic water cycle, water quality, and its management worldwide. A broad outline of the journal's scope includes: Treatment processes for water and wastewaters (municipal, agricultural, industrial, and on-site treatment), including resource recovery and residuals management; Urban hydrology including sewer systems, stormwater management, and green infrastructure; Drinking water treatment and distribution; Potable and non-potable water reuse; Sanitation, public health, and risk assessment; Anaerobic digestion, solid and hazardous waste management, including source characterization and the effects and control of leachates and gaseous emissions; Contaminants (chemical, microbial, anthropogenic particles such as nanoparticles or microplastics) and related water quality sensing, monitoring, fate, and assessment; Anthropogenic impacts on inland, tidal, coastal and urban waters, focusing on surface and ground waters, and point and non-point sources of pollution;