EPA to develop regulation for perchlorate, toxic chemicals in drinking water

by Brianna Crandall — February 7, 2011—U.S. Environmental Protection Agency Administrator Lisa P. Jackson announced February 2 the agency’s decision to move forward with the development of a regulation for perchlorate to protect Americans from any potential health impacts, while also continuing to take steps to ensure the quality of the water they drink.

The decision to undertake a first-ever national standard for perchlorate reverses a decision made by the previous administration and comes after Administrator Jackson ordered EPA scientists to undertake a thorough review of the emerging science of perchlorate.

Perchlorate is both a naturally occurring and man-made chemical, and scientific research indicates that it may impact the normal function of the thyroid, which produces important developmental hormones critical to normal development and growth. Based on this potential concern, EPA will move forward with proposing a formal rule. This process will include receiving input from key stakeholders as well as submitting any formal rule to a public comment process.

In a separate action, the agency is also moving towards establishing a drinking water standard to address a group of up to 16 toxic chemicals that may pose risks to human health. As part of the Drinking Water Strategy laid out by Administrator Jackson in 2010, EPA committed to addressing contaminants as a group rather than one at a time so that enhancement of drinking water protection can be achieved cost effectively.