Fact Sheets

OEHHA has developed fact sheets to address important issues.  They may be viewed on-screen or downloaded as pdf files where available.  See below.

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Proposition 65

Risk Assessment


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A report presents a list of chemicals emitted from California refineries, and then prioritizes the chemicals according to their emissions levels and toxicity. The report is a companion document or appendix to ARB’s air monitoring report, “Refinery Emergency Air Monitoring Assessment Report”.

Facts about hexavalent chromium, also known as chromium 6 (Cr6), the toxic form of the metal chromium.

Efectos del Cromo Hexavalente Sobre la Salud

Questions and answers about the SoCalGas leak at the Aliso Canyon Underground Storage Field near the Porter Ranch Community.

Spending a lot of time near roadways with high traffic can be a potential health hazard. This 2006 fact sheet is to help childcare providers understand the issues related to traffic pollution and children’s health.

OEHHA prepared this fact sheet to help school personnel understand the issues related to traffic near schools and children's health.

A 2004 Fact sheet about Air Pollution from Nearby Traffic and Children's Health: Information for Parents

A fact sheet describing impacts of air pollution on children's health.

A fact sheet was prepared by OEHHA and the American Lung Association (ALAC) regarding health hazards associated with diesel exhaust.

OEHHA released a fact sheet prepared for the public, detailing health risks from asbestos exposure.

OEHHA released the findings of the Scientific Review Panel on the identification of inorganic lead as a Toxic Air Contaminant.  Included here are FAQs about inorganic lead exposure.


Feb 26, 2016: CalEnviroScreen FAQs

Questions and answers about CalEnviroScreen, a screening tool that evaluates the burden of pollution from multiple sources in communities while accounting for potential vulnerability to the adverse effects of pollution.

Feb 26, 2016: Preguntas Frecuentes

Vea preguntas frecuentes sobre CalEnviroScreen.


A fact sheet describing Oregon's dry well program.  Oregon's program is the most well developed in the country.

OEHHA has been working with the California Water and Land Use Partnership to educate land use decision makers and their staff about the link between land use and natural resource protection.

This fact sheet on low impact development (LID) provides a solution to minimize or eliminate the impacts on the water cycle caused by paving over large areas of land, and reviews the basic principles of LID, its benefits and implementation challenges, its use in new and re-development, and provides examples of its application in urban and suburban environments.


Questions and answers on the fish advisory for French Meadows and Hell Hole Reservoirs. The lakes are located in Placer County, northeast of Auburn and Foresthill.

The advisory for Lexington Reservoir is based on findings of mercury in fish. The lake is located in Santa Clara County, between Los Gatos and Santa Cruz.

Fact Sheet describing OEHHA activities involving oil spills and seafood

What are the health risks and benefits of eating fish that may have been exposed to mercury?

Questions and answers about eating fish from Silverwood Lake in San Bernardino County.


Questions and answers about the insecticide Tempo® SC Ultra (Cyfluthrin).  English, Spanish, Vietnamese and Simplified Chinese versions available.

Questions and answers about CoreTect® (imidacloprid) used for Asian Citrus Psyllid control, in English and Spanish.

Questions and answers about the insecticide CoreTect® (imidacloprid) used for glassy-winged sharpshooter control, in English and Spanish.

Questions and answers about the insecticide Merit® (imidacloprid) used for glassy-winged sharpshooter control in English and Spanish.

Questions and answers about the insecticide Tempo® (cyfluthrin) used for glassy-winged sharpshooter control.

Questions and answers about Bacillus thuringiensis (Btk) insecticidal product Dipel® in English and Spanish

Questions and answers about Lure N Kill JB in Japanese Beetle Traps in English and Spanish.

Questions and answers about the insecticide Dibrom® (Naled) Lure in English, Spanish, Chinese and Vietnamese

Questions and answers about the biological insecticide GF-120 NF Naturalyte® (Spinosad) in  English, Spanish, Armenian, Chinese, and Vietnamese.

Questions and answers about the insecticidal product acelepryn (chlorantraniliprole) in English, Spanish, Chinese and Vietnamese.

Questions and answers about the insecticide Dibrom® (Naled)

Questions and answers about the insecticide Sevin® SL in English, Spanish and Vietnamese.

Questions and answers about the insecticide Merit® (Imidacloprid).  English, Simplified Chinese and Spanish language versions available.

Questions and answers about the biological insecticide Isomate® EGVM (Pheromone)

Questions and answers about the insecticide Methyl Eugenol in Insect Bait Traps

Questions and answers about the biological insecticide Entrust®  (Spinosad)

Proposition 65

Questions and Answers about the searchable database for consumers to use to determine whether a product they intend to purchase or use is packaged in a can or with a bottle cap or seal in which BPA was intentionally used.

Information to tenants whose apartment managers and owners have posted or distributed Proposition 65 warnings

Feb 1, 2014: Proposition 65 FAQs

Frequently asked questions about California's Proposition 65.

Jan 16, 2014: Cadmium Fact Sheet

Cadmium is a bluish-white metal that occurs widely at low levels in the environment, and may be recycled from used nickel-cadmium batteries.  Cadmium appears on the Proposition 65 list of chemicals known to cause cancer and reproductive harm.

Frequently asked questions about the carcinogen acrylamide.

Methanol poisoning happens when people are exposed to more methanol than their bodies can handle. You should never drink pure methanol. Drinking a few teaspoons of undiluted methanol can lead to blindness and can even be fatal.  Learn more about methanol from this fact sheet.

4-Methylimidazole (4-MEI) was listed under Proposition 65 list because the National Toxicology Program found 4­MEI caused lung tumors in laboratory animals.

Public Information

The mission of the individual sections within OEHHA

On November 7, 2007, the Cosco Busan container ship struck one of the towers of the San Francisco-Oakland Bay Bridge, causing a release of an estimated 58,000 gallons of fuel into San Francisco Bay. This fact sheet provides answers to the many public health questions.

Risk Assessment

Health risk information on cyanobacteria (blue-green algae) for dog owners near lakes, ponds, and rivers.

Blue-green algae (also known as cyanobacteria) are non-pathogenic photosynthetic bacteria that grow in outdoor water bodies and produce toxins such as microcystins, cylindrospermopsin and anatoxin-a. This fact sheet is meant to help veterinarians with diagnosis and treatment options.

Estudio de salud ambiental sobre el césped sintético

Frequently asked questions on the environmental health study of synthetic turf

Safe methods of fire ash cleanup and the hazards associated with exposure.

Jun 17, 2015: EPIC Fact Sheet

Fact Sheet: Environmental Protection Indicators for California


The updated PHG for perchlorate is one part-per-billion (1 ppb) based on the inhibition of iodide uptake into the thyroid gland and the consequent disruption of thyroid hormone production.

Frequenty Asked Questions about Public Health Goals, and a link to download a copy of this guide.

The PHG for hexavalent chromium is established at 0.02 parts per billion (ppb). The health-protective level is based on avoidance of potential carcinogenic effects.