EPA recommends enhanced monitoring for Hexavalent Chromium (Chromium-6) in Drinking Water
Feb
1
Written by:
2/1/2011 12:00 AM
The agency recently issued guidance recommending how public water systems might enhance monitoring and sampling programs specifically for hexavalent chromium. The recommendations are in response to emerging scientific evidence that chromium-6 could pose health concerns if consumed over long periods of time. The enhanced monitoring guidance provides recommendations on where the systems should collect samples and how often they should be collected, along with analytical methods for laboratory testing. Systems that perform the enhanced monitoring will be able to better inform their consumers about any presence of chromium-6 in their drinking water, evaluate the degree to which other forms of chromium are transformed into chromium-6, and assess the degree to which existing treatment affects the levels of chromium-6 in drinking water.
EPA's information on the new guidance to drinking water systems:
http://water.epa.gov/drink/info/chromium/guidance.cfm
California Department of Public Health 's Chromium-6 information:
http://www.cdph.ca.gov/certlic/drinkingwater/Pages/Chromium6.aspx
Weck Laboratories is certified for Total and Hexavalent Chromium in drinking water samples
| Chromium | EPA Method | Reporting Limit, ug/L | Method Detction Limit, ug/L |
| Total | 200.8 | 0.2 | 0.012 |
| Hexavalent | 218.6 | 0.02 | 0.0081 |