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Public Workshop - Proposed Update of the Public Health Goals for Nitrate and Nitrite in Drinking Water

The workshop is provided to enable a dialogue between OEHHA scientists and the public to discuss the scientific basis of the proposed PHG updates, and to receive comments.

Comment Period - Proposed Update of the Public Health Goals for Nitrate and Nitrite in Drinking Water

Comment period on the proposed update of the PHGs for nitrate and nitrite published in 1997.  OEHHA is proposing to retain the original PHG values.

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Draft Technical Support Document on the Proposed Update of the Public Health Goals for Nitrate and Nitrite in Drinking Water

Proposed update of the PHGs for nitrate and nitrite published in 1997.  OEHHA is proposing to retain the original PHG values.

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15-Day Extension of Data Submission Period for Initiation of Risk Assessments for Chemicals in Drinking Water

Extension of Public Comment period on the PHG review for Nickel

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15-Day Extension of Data Submission Period for Initiation of Risk Assessments for Chemicals in Drinking Water

Extension of Public Comment period on the PHG review for: Hexavalent Chromium

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Initiation of Risk Assessments for Chemicals in Drinking Water (2016)

Initiation of PHG reviews for four chemicals: Cis-1,2-Dichloroethylene, Trans-1,2-Dichloroethylene, Hexavalent Chromium and Nickel

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Comment Period - Initiation of Risk Assessments for Chemicals in Drinking Water

Comment period on the Initiation of PHG reviews for four chemicals: Cis-1,2-Dichloroethylene, Trans-1,2-Dichloroethylene, Hexavalent Chromium and Nickel

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Announcement of Publication of Drinking Water Public Health Goals and Availability of Final Technical Support Document for: Carbofuran, Diquat, Endrin, Picloram, and Thiobencarb

The updated PHGs are 0.7 parts per billion (ppb) for carbofuran, 6 ppb for diquat, 0.3 ppb for endrin, 166 ppb for picloram, and 42 ppb for thiobencarb, all based on non-cancer effects.

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Final Technical Support Document on Updated Public Health Goal for Antimony in Drinking Water

Includes changes in critical study and endpoint selection, and updated dose-response analysis and exposure estimates.  These changes resulted in the revision of the antimony PHG to 1 ppb.

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Second Public Comment Period - Draft Technical Support Document on the Proposed Updates of Public Health Goals for Carbofuran, Diquat, Endrin, Picloram, and Thiobencarb in Drinking Water

2nd public comment period proposed updated PHGs for Carbofuran (0.7 ppb), Diquat (6 ppb), Endrin (0.3 ppb), Picloram (166 ppb), and Thiobencarb (42 ppb) in drinking water.

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