See our section on water for more on water pollution and contamination. -- KM


In a study published in January in the journal Ozone: Science & Engineering, for example, toxicologist Shane Snyder, research and development product manager for the Southern Nevada Water Authority, tested water samples from 20 cities across the country.
The most concentrated pharmaceutical he could find was the sedative meprobamate, which has been shown to be toxic in mice; the acceptable daily intake is a mere 180 parts per billion.

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