Friday, April 1, 2011

Perchlorate Standard for US Drinking Water

Perchlorate in drinking water is known to suppress thyroid function by inhibiting uptake of iodide and its subsequent ability to produce hormones that are critical to development. Children and new born are particularly at risk. However, the exact safe dose of this compound is unknown. Link Link  In 2002 the US EPA suggested a limit of 1 ppb should be set, but in 2008 the Government decided not to regulate the compound but recommended drinking water concentrations should not exceed 15 ppb.

The US EPA has  now decided to regulate perchlorate under the Safe Drinking Water Act . Perclolrates are used to produce rocket fuel, fireworks and explosives, not activities associated with Ireland. However, they are also found in bleach, in some fertilizers and in nature making them universal. In the US it is estimated that between 5 to 17 million people may be exposed to perchlorate contaminated water with 153 supplies known to be contaminated. A standard is not expected to be set for at least 18-24 months. Link

No comments:

Post a Comment