WebMD: The Environmental Working Group (EWG) found 38 different pollutants including bacteria, fertilizer, and industrial chemicals in bottled water. Two of the worst brands that exceed legal limits are Wal-Mart’s Sam’s Choice and Giant grocery’s Acadia brand. Specific findings include:

  • Five of the tested waters contained fluoride, six contained small amounts of the fertilizer ingredient nitrate, and two contained the drug acetaminophen, sold as Tylenol.
  • Samples of the Sam’s Choice water purchased at a San Francisco area Wal-Mart had levels of the disinfection byproducts trihalomethanes that exceeded the California legal limit for these chemicals.
  • Samples of the Sam’s Choice brand also had higher-than-allowed levels of the chemical bromodichloromethane, which is a known carcinogen.
  • Samples of Giant’s Acadia brand water also had levels of the chemicals that exceeded California safety standards, although the brand was sold only in mid-Atlantic states, where it met standards.
  • The report noted that levels of the chemicals in both waters also exceeded the bottled water industry’s voluntary safety standards.
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