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Water quality
The chemical, physical, and biological characteristics of water, usually in respect to its suitability for a particular purpose.
Subtopics:
Groundwater quality (80 items)
Marine water quality (14 items)
Surface water quality (66 items)

Water-quality data (83 items)
Related topics:


Results 41 - 50 of 341 listed by similarity [list alphabetically]
Groundwater quality in the San Fernando--San Gabriel groundwater basins, California [More info]
Organic solvents are the chief concern in this area, which has given rise to a systematic program of monitoring and water treatment. This study shows relatively recent results.
Groundwater quality in the San Francisco Bay groundwater basins, California [More info]
The constituent present at high concentrations in the greatest proportion of the primary aquifer system was TDS, which is an indicator of salinity. Perchlorate was also present at moderate concentration in 42% of samples.
Groundwater quality in the Santa Clara River Valley, California [More info]
This study of untreated groundwater indicates the number of samples in which inorganic or organic constituents occur in high or moderate in concentration. The study does not indicate significant problems in groundwater quality here.
Groundwater Quality in the Southeast San Joaquin Valley, California [More info]
Arsenic and nitrate are the constituents found most commonly at high concentrations in the primary aquifers. Arsenic comes from natural sources and is affected by pH and dissolved oxygen.
Groundwater quality in the Southern Sacramento Valley, California [More info]
Results of a survey of contaminants in untreated groundwater in this area. Arsenic and boron were the trace elements occurring most frequently at high concentrations.
Groundwater quality in the Southern Sierra Nevada, California [More info]
Recent study indicating inorganic constituents as the primary items of concern in this area. Chemical and mineralogical compositions of the aquifer rocks probably explain variation among localities here.
Groundwater quality in the Tahoe and Martis Basins, California [More info]
Recent study encountered occasional high values of radioactive trace elements, but the water quality in this area as monitored compares favorably to more urban areas studied by the same group.
Groundwater quality in the Upper Santa Ana Watershed study unit, California [More info]
Recent study indicating nitrate and perchlorate are the primary inorganic constituents of interest here, coming from human activities such as agriculture.
PDF Groundwater quality of southeastern Wyoming [More info]
Explains how we assess groundwater quality here, what characteristics are important, and how they hurt or, in some cases, help use use the water.
National Water Quality Assessment urban studies portal [More info]
Multiple studies addressing urban water-quality issues, to describe biological, chemical, and physical characteristics of urban water resources over time, and relate those characteristics to natural processes and human activities
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