Groundwater contamination occurs when man-made products such as gasoline, oil, road salts and chemicals get into the groundwater and cause it to become unsafe and unfit for human use. Some of the major sources of these products, called contaminants, are storage tanks, septic systems, hazardous waste sites, landfills, and the widespread use of ...
In California, water quality data from over 200,000 groundwater wells are available from the State Water Resources Control Board Groundwater Ambient Monitoring and Assessment Program (27). Depth information for these samples is not publicly available, but depths are unlikely to be deeper...
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San Joaquin Valley Groundwater. An interactive map, California's San Joaquin Valley, showing the depth to ground water from 1970 to the current water year; featuring a swipe tool for comparison of two different years.