Announcement of Publication of the Final Technical Support Documents for the Public Health Goal and Responses to Comments for Six Chemicals in Drinking Water: cis/trans-1,2-Dichloroethylene, 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, Radium-226 and –228, Strontium-90, and Tritium
[03/06/06]

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In accordance with Health and Safety Code Section 116293 (SB1822, Sher, Statutes of 2002), the Office of Environmental Health Hazard Assessment (OEHHA) hereby publishes the final Public Health Goal (PHG) for cis/trans-1,2-dichloroethylene, 1,1,1-trichloroethane, 1,1,2-trichloroethane, radium-226 and –228, strontium-90, and tritium in drinking water. OEHHA has completed technical support documents that provide the scientific basis for the PHGs. The draft documents have undergone a public workshop and two public review and comment periods in fulfillment of the requirements of Health and Safety Code, Section 116365 and Section 57003 (SB 1082). They have been peer reviewed by the University of California and also by the U.S. Environmental Protection Agency (U.S. EPA). The final documents incorporate changes in response to peer review and public comments, and the responses to major comments are also posted. These documents are available on our Web site:
(http://www.oehha.ca.gov/water/phg/index.html).

The PHG support documents estimate the level of each chemical in drinking water that would pose no significant health risk to individuals, including sensitive populations, consuming the water on a daily basis over a lifetime. PHGs represent health-protective goals based solely on public health considerations and are developed based on the best available data in the scientific literature. The documents provide the scientific basis for the California Department of Health Services (DHS) to establish a primary drinking water standard (state maximum contaminant level, or MCL). By law, DHS will consider economic factors and technical feasibility in setting the MCL. The PHG documents also provide relevant information on the chemicals to federal, state, and local public health officials.

Follow this link to download a copy of the Public Health Goal and Responses to Comments for cis/trans-1,2-dichloroethylene in drinking water

Follow these links to download a copy of the Public Health Goal and Responses to Comments for 1,1,1-trichloroethane in drinking water

Follow these links to download a copy of the Public Health Goal and Responses to Comments for 1,1,2-trichloroethane in drinking water

Follow these links to download a copy of the Public Health Goal and Responses to Comments for radium-226 and -228 in drinking water

Follow these links to download a copy of the Public Health Goal and Responses to Comments for strontium-90 in drinking water

Follow these links to download a copy of the Public Health Goal and Responses to Comments for tritium in drinking water

Follow this link to download a copy of this memorandum