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OEHHA adopted revised toxicity equivalency factors for polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs), and for dioxin-like polychlorinated biphenyls (PCBs) to conform to the most recent values (TEF WHO-05).

Safe fishing advisory for Donner Lake.  The advisory is based on mercury or PCBs.

For information relating to biotoxins from harmful algal blooms (HABs) that may be found in California water bodies, see below.

Notice of intent to list MON 4660 (dichloroacetyl-1-oxa-4-azaspiro(4.5)decane), MON 13900 (furilazole), and pymetrozine as known to the State to cause cancer via the authoritative bodies listing mechanism.

Announcement of First Public Comment Period and Workshop Draft Technical Support Document on Proposed Public Health Goal for Perchlorate in Drinking Water

Proposal to establish a specific regulatory level posing no significant risk for 4-methylimidazole (4-MEI) of 16 ug/day

Indicators of Environmental Justice Impacts of Climate Change in California

CalEPA and OEHHA released the report “Cumulative Impacts: Building a Scientific Foundation.” This report presents the first step in developing a screening methodology to evaluate the cumulative impacts of multiple sources of pollution in specific communities or geographic areas.

Metam potassium listed as known to the State to cause cancer effective December 31, 2010 via the Authoritative Bodies listing mechanism.

The PHG for styrene is established at 0.5 parts per billion (ppb), based on carcinogenic effects in mice, supported by genotoxic effects observed in humans and suggestive evidence of increased cancer in occupational studies.

Amendment to Title 27, California Code of Regulations, Section 25805, Specific Regulatory Levels: Chemicals Causing Reproductive Toxicity - Di-isodecyl Phthalate (DIDP)