{"thcode":2,"term":{"code":1306,"name":"water quality","parent":1174,"scope":"The chemical, physical, and biological characteristics of water, usually in respect to its suitability for a particular purpose."},"uf":[{"name":"dissolved constituents","usewith":false},{"name":"dissolved contaminants","usewith":false},{"name":"water-quality","usewith":false},{"name":"water-quality data","usewith":{"code":235,"name":"datasets","parent":808,"scope":"Digital information in a format suitable for direct input to software that can analyze its meaning in the scientific, engineering, or business context for which the data were collected."}}],"bt":[{"code":1174,"name":"topics","parent":1,"scope":"Themes, subjects, and concerns for which USGS information resources are relevant."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[{"code":518,"name":"groundwater quality","parent":1306,"scope":"Fitness of subsurface water for use based on its composition and properties."},{"code":708,"name":"marine water quality","parent":1306,"scope":"Observed intrinsic characteristics of marine waters affecting their ability to support life or facilitate biological processes such as waste decomposition."},{"code":1125,"name":"surface water quality","parent":1306,"scope":"Chemical, physical, and biological characteristics of water in lakes, rivers, or streams related to its fitness for use."}],"rt":[{"code":2274,"name":"PFAS","parent":769,"scope":"Per- and polyfluoroalkyl substances (PFAS) are a group of man-made chemical compounds that are an emerging contaminant."},{"code":53,"name":"aquatic biology","parent":650,"scope":"The scientific study of organisms living in or near water.  This term is to be used for the science of 'aquatic biology' and for  biological studies in fresh and brackish water. For marine biological studies, use 'marine biology'."},{"code":769,"name":"contamination and pollution","parent":1174,"scope":"Introduction of harmful substances into the environment by human action or natural processes."},{"code":283,"name":"drinking water use","parent":278,"scope":null},{"code":560,"name":"hydrology","parent":291,"scope":"Branch of earth science that deals with water as it occurs in the atmosphere, on the surface of the ground, and underground."},{"code":1298,"name":"water chemistry","parent":437,"scope":"Branch of chemistry that deals with the elements and compounds in water."},{"code":1304,"name":"water properties","parent":1174,"scope":"Measurable physical and chemical characteristics of water from different sources."}]}