EPA Approves UL Drinking Water Laboratory for UCMR 2 Testing

February 5, 2007 // Published as a news service by IHS

UL successfully passed proficiency testing for the 25 parameters required under UCMR 2 and is now fully approved for EPA Methods 535, 529, 527, 525.2 and 521.

UCMR 2 requires the following:

• Assessment monitoring - All public water systems (PWSs) serving more than 10,000 people and 800 representative PWSs serving less than 10,000 will be required to conduct quarterly monitoring for the 10 chemicals on List 1 during a 12-month period between January 2008 - December 2010.
• Screening survey - All PWSs serving more than 100,000 people along with 320 representative large systems (10,001 - 100,000) and 480 representative small systems (serving 10,000 or less) will be required to conduct a screening survey of the 15 chemicals on List 2 during a 12-month period between January 2008 - December 2010.

Like UCMR 1, UCMR 2 is designed to collect occurrence data on chemicals identified in the Contaminant Candidate List. These chemicals are not regulated by national primary drinking water regulations, but they are known and anticipated to occur at public water systems and may warrant regulation under the Safe Drinking Water Act.

Source: Underwriters Laboratories Inc. (UL).