Notices

Legal notices and other information about Public Health Goals, Notification Levels and other water-related content.

Water-related Notices

May 7, 2004: Risk Assessment for Chemicals in Drinking Water: Estimation of Relative Source Contribution

Information about relative source contribution (RSC) and its derivation (presented as a poster at the 43rd annual meeting of the Society of Toxicology, Baltimore, Maryland, March 21-25, 2004.

April 23, 2004: Public Health Goal for Arsenic in Drinking Water

The finalized Public Health Goal for arsenic in drinking water was made available.

April 23, 2004: OEHHA Publishes Health Goal for Arsenic in Drinking Water

Public health goal establishes a long-term objective for the reduction of arsenic in California's drinking water. Arsenic is one of the most toxic substances commonly found in drinking water, and it…

April 19, 2004: Radionuclides Health Based Screening Levels

Information on health risks from radionuclides in drinking water.

April 11, 2004: OEHHA Announces Health Goal for Perchlorate in Drinking Water

The completion of this Public Health Goal is a first step in California's efforts to address the presence of perchlorate in our state's drinking water supplies.

March 12, 2004: Public Health Goal for Perchlorate

The Public Health Goal for perchlorate was finalized and the technical support document was made available.

March 12, 2004: Publication of the Final Technical Support Document for the Public Health Goal for Perchlorate in Drinking Water and Responses to Major Comments on the Technical Support Document

OEHHA announced that the public health goal (PHG) for perchlorate in drinking water was identified as 6 ppb (parts per billion).

January 14, 2004: Three Scientific Peer Reviews of the Draft Public Health Goal for Perchlorate in Drinking Water

Three scientific peer reviews on the draft Public Health Goal for perchlorate are available.

November 7, 2003: Second Public Comment Period for the Proposed Public Health Goal for Arsenic in Drinking Water

OEHHA announces a second public comment period for the revised draft Public Health Goal for arsenic in drinking water.

September 26, 2003: Final Technical Support Documents for Public Health Goals for 11 Chemicals in Drinking Water

The finalized Public Health Goals for 11 chemicals in drinking water are available. These chemicals are: asbestos, barium, beryllium, chlorobenzene, 1,1-dichloroethane, diethylhexyl adipate,…

March 7, 2003: OEHHA Releases Draft Health Goal for Arsenic in Drinking Water

OEHHA conducted an exhaustive analysis of all available scientific studies on the health effects of arsenic. The proposed PHG of 4 parts per trillion is based upon studies of hundreds of thousands of…

March 7, 2003: Public Workshop and Comment Period for the Draft Public Health Goal for Arsenic in Drinking Water

OEHHA announces a public workshop and comment period for the draft Public Health Goal for arsenic in drinking water.

December 6, 2002: Announcement of Second Public Comment Period for 11 Draft Technical Support Documents for Proposed Public Health Goals for Chemicals in Drinking Water

OEHHA announces a second public comment period for the revised draft technical support documents for proposed Public Health Goals for 11 chemicals. These chemicals are: asbestos, barium,…

December 6, 2002: Second Public Comment Period for Draft Public Health Goal for Perchlorate

OEHHA announces a second public comment period for the proposed Public Health Goal for Perchlorate.

May 30, 2002: Announcement of Public Workshop and Comment Period for 11 Draft Technical Support Documents for Proposed Public Health Goals for Chemicals in Drinking Water

OEHHA announces the availability of the revised draft technical support documents for proposed Public Health Goals for 11 chemicals. These chemicals are: asbestos, barium, beryllium,…

May 1, 2002: Initiation of Risk Assessments for Chemicals in Drinking Water (2002)

OEHHA posted a notice detailing the initation of risk assessments in 2002 in connection with the development of Public Health Goals.

April 30, 2002: Public Comment Period for a Draft Technical Support Document for the Proposed Public Health Goal for Perchlorate in Drinking Water

OEHHA announces a public comment period for the draft Public Health Goal for perchlorate.

March 8, 2002: Public Workshop and Discussion of the Draft Public Health Goal for Perchlorate in Drinking Water

OEHHA announces a public workship for the proposed Public Health Goal for perchlorate in drinking water.

January 7, 2002: Proposed Action Level for Chlorate

OEHHA recommends an action level of 200 ug/L (ppb) chlorate in drinking water.

November 9, 2001: OEHHA Withdraws Public Health Goal for Chromium

Announcement of the withdrawal of the 2.5 ppb PHG for chromium, in order to develop a PHG specifically for chromium 6, or hexavalent chromium. The new PHG will replace the withdrawn "total…