STATEMENT . I • i Minor Clarification of National Primary Drinking Water Regulation for Arsenic; Final Rule Today, EPA is affirming that the public health standard for arsenic in drinking water established in January 2001 is 10 parts per billion (ppb). In today's action, EPA is making clear that when a monitoring result is expressed in milligrams per liter (rrig/L) rather than ppb, any monitoring result greater than 0.010 mg/1 is a violation of the January 2001 arsenic standard. To assure that this clarification extends to the regulatory text for arsenic and to remove any implementation uncertainty relating to this issue, today's action revises the Federal regulations to express the arsenic maximum ' contaminant level as 0.010 mg/1. For more information: Call the Safe Drinking Water Hotline at 1-800-426-4791 or visit the EPA Web site at: www.epa.gov/safewater . ' . Office of Water Mail Code 4607M EPA 815-F-03-002 March 2003 ------- |