Chromium-6 Treatment Becomes Key Issue Following California Regulations
With water scarcity driving populations to new or previously abandoned water sources out West, Chromium-6 is becoming a significant treatment issue. The EPA currently mandates an enforceable drinking water standard of 0.1 milligrams per liter (mg/L) for total chromium, which includes chromium-6 and chromium-3. In California however, the Department for Public Health recently set the enforceable standard at 0.010-milligram per liter MCL for hexavalent chromium (equivalent to 10 micrograms per liter, µg/L), effective July 1, 2014.
As John Dyson of Severn Trent explains in this Water Online Radio interview, chromium-6, arsenic removal, nitrates and the treatment of other organics are all becoming more prevalent as the drought in the West drives municipalities to tap into non-traditional water sources.
Severn Trent runs about 475 municipal water installations in the United States and still operates as a private utility in the U.K. As Dyson explains, the Company’s utility heritage helps the equipment provider stay focused on building long-life solutions and driving costs down.
Click on the radio player below to learn more about chromium-6 and some of Severn Trent’s other treatment initiatives, such as brine reuse following nitrate removal by ion exchange.