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Stories with subject: Aquifers
  • California withholds findings on oilfield contamination 
    Updated: Jul-23-15 3:34 pm

    SAN FRANCISCO - California oil-and-gas regulators have refused for nearly a year to release findings of what they termed a "highest-priority" investigation of possible oilfield contamination into the water aquifers that serve millions of people in and around Los Angeles.

  • Study finds contaminants in California public-water supplies 
    Updated: Jul-15-15 6:41 pm

    SAN FRANCISCO - Nearly one-fifth of the raw groundwater used for public drinking water systems in California contains excessive levels of potentially toxic contaminants, according to a decade-long U.S. Geological Survey study that provides one of the first comprehensive looks at the health of California's public water supply and groundwater.