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Welcome to the United States Geological Survey (USGS) Water-quality database for wells within the Mojave Water Agency Management Area (See Location Map)
. This report
presents maps showing ranges of concentrations for selected inorganic chemicals that affect water quality in the region. Water-quality data from 448 wells sampled during 1991-1997 were used to construct five maps showing the regional distribution of total dissolved solids (TDS), arsenic (As), boron (B), fluoride (F), and nitrite plus nitrate as nitrogen (NO2+NO3 as N). For wells sampled more than once, the highest reported concentration for each constituent is shown on water-quality maps. Water-quality data presented are divided into three or four color groups based on concentration. The concentration associated with each color group is indicated in the lower right corner of constituent maps.
To view water-quality distribution, “click” on the constituent map of interest. Water-quality and well data can be accessed from all maps by clicking on the well identifier (well ID) from any map. For more
information about California and Federal water-quality standards contact the California Environment Protection Agency (CalEPA)
or the U. S. Environmental Protection Agency (USEPA). For information about how to use this database, see the “How to” page.
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