YubaNet.com
Tuesday, July 22 2014

            We Deliver News to the Sierra
News Fire News spacer Latest News spacer Regional News spacer California News spacer USA News spacer World News spacer Op-Ed spacer Enviro News spacer Sci Tech News spacer Life spacer Odd News spacer Cartoons spacer
Features The Calendar features features Weather features Sierra NightSky features features features Road Conditions features Home spacer
CA
 

OEHHA Releases Revised Draft Public Health Goal for Hexavalent Chromium


    Google+    

By: Office of Environmental Health Hazard Assessment

SACRAMENTO, Dec. 31, 2010 - The Office of Environmental Health Hazard Assessment (OEHHA) today is releasing for public comment a revised draft public health goal (PHG) for hexavalent chromium in drinking water.

The revised draft proposes a PHG of 0.02 parts per billion (ppb) for hexavalent chromium, which is also known as chromium 6. A PHG is the level of a chemical contaminant in drinking water that does not pose a significant health risk. It is not a regulatory level for cleanup of groundwater or surface water contamination.

"When finalized, the public health goal will give California a solid scientific basis for a health-protective drinking water standard for chromium 6," said OEHHA Director Dr. Joan Denton. "We expect the goal will be the first in the nation for this contaminant."

The new document revises an earlier draft issued in August 2009 that proposed a PHG of 0.06 ppb. OEHHA, which is part of the California Environmental Protection Agency, made changes in response to both public comments and an external scientific peer review of the earlier draft that was coordinated by the University of California.

New research has documented that young children and other sensitive populations are more susceptible than the general population to health risks from exposure to carcinogens. The changes were recommended by the peer review and reflect OEHHA's new guidelines for early-in-life exposures, which acknowledge this susceptibility.

The PHG will serve as guidance for the California Department of Public Health (CDPH) in developing the nation's first drinking water standard specifically for chromium 6. Current federal and state standards exist for total chromium, which includes both chromium 6 and less-toxic chromium 3.

The draft PHG is based on an estimated "one in one million" lifetime cancer risk level. This means that for every million people who drink tap water with that level of chromium 6 each day for 70 years, it is expected there would be one additional case of cancer from exposure to chromium 6.

The PHG is not meant to be the maximum "safe" level of chromium 6 in drinking water. It represents a stringent health-protective goal that CDPH will use to develop an enforceable regulatory standard for chromium 6 in drinking water. The standard will be set as close to the PHG as is economically and technically feasible.

Chromium 6 occurs naturally in some drinking water. The metal is also used in industrial applications and has entered some water supplies due to past waste-disposal practices.

A copy of the draft PHG can be viewed or downloaded from OEHHA's web site at www.oehha.ca.gov. OEHHA will accept written comments on the draft until 5 p.m. on January 30, 2011.

Comments may be submitted to oehha@oehha.ca.gov or sent to OEHHA at 1515 Clay St., 16th Floor, Oakland, CA 94612. OEHHA will review all comments and make any appropriate revisions before finalizing the PHG.

 

Help us bring you more news. Be a real reader: Support YubaNet

By submitting a comment you consent to our rules. You must use your real first and last name, not a nickname or alias. A comment here is just like a letter to the editor or a post on Facebook. Thank you.

 

Latest Headlines

CA

Labor and Civil Rights Icon Dolores Huerta Endorses Prop 45 To Lower Health Insurance Premiums for Millions of Californians

Op-Ed: Joseph Villela: Governor Rights Wrong That Tears Families Apart

C-WIN: CA Department of Water Resources Running Out of Funds, Taxpayers & Ratepayers on the Hook

CDFW and Partners Raid Santa Cruz County Marijuana Grow

Lightning Sparks New Fires on the Modoc NF

Crews Respond to the Bodie Fire

National Park Tourism in California Creates $1.5 Billion in Economic Benefit

CDPH Warns Not to Use Certain Tattoo Products Due to Risk of Infection


More

 

 

 

 

NEWS . Fire News . Latest . Regional . California . USA . World . Op-Ed . Enviro . Sci/Tech . Life . Odd News . Cartoons
FEATURES . The Calendar .Weather . Sierra NightSky . Horoscope . Road Conditions
YubaNet.com . Advertising. About Us . Support YubaNet . Contact Us . Terms of Use . Privacy

YubaNet.com © 1999-2014
Nevada City, California (530) 478-9600