Assessing Arsenic Removal By Metal Hydroxide By Adsorptive Media Using Rapid Small Scale Column Tests

The lowering of the maximum contaminant level for arsenic in drinking water from 50 to 10 micrograms per liter has posed significant technical and financial challenges to water treatment facilities throughout the United States. To assist small water systems (less than 10,000 customers) in meeting the new standard, EPA announced in October 2001 an initiative, the Arsenic Rule Implementation Research Program, to conduct a series of full-scale, on-site demonstrations of arsenic removal technologies, process modifications, and engineering approaches applicable to small systems. Of the 40 project sites under the Round 1 and Round 2 demonstration program, 23 selected adsorptive media technology because of its ease of operation.