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What is Proposition 65?

Proposition 65: Safe Drinking Water Act of 1986
Chemicals List - Mar 2011
Safe Harbor Levels - Nov 2010
Clear & Reasonable Warnings

Approved by California voters during the 1986 general election, Proposition 65 is formally known as the Safe Drinking Water and Toxic Enforcement Act of 1986. Key provisions of the Act are summarized below:

A list of chemicals known to cause cancer or reproductive toxicity must be published annually (although chemicals are now being listed throughout the year). The current list is 21 pages long and includes approximately 800 chemicals. Recently listed chemicals include:

Chemical name: CAS number: Date listed:
MON 4660 (dichloroacetyl-1-oxa-4-azaspiro(4,5)-decane) 71526-07-3 Mar 22, 2011
MON 13900 (furilazole) 121776-33-8 Mar 22, 2011
Pymetrozine 123312-89-0 Mar 22, 2011
Acrylamide 79-06-1 Feb 25, 2011
S,S,S-Tributyl phosphorotrithioate  
(Tribufos, DEF)
78-48-8 Feb 25, 2011
4-Methylimidazole 822-36-6 Jan 7, 2011
Metam potassium 137-41-7 Dec 31, 2010
Avermectin B1 (Abamectin) 71751-41-2 Dec 3, 2010
Methyl isocyanate (MIC) 624-83-9 Nov 12, 2010
1,3-Dichloro-2-propanol (1,3-DCP) 96-23-1 Oct 8, 2010
3-Monochloropropane-1,2-diol (3-MCPD) 96-24-2 Oct 8, 2010
Spirodiclofen 148477-71-8 Oct 8, 2010
N, N-Dimethylacetamide 127-19-5 May 21, 2010

Businesses are prohibited from discharging listed chemicals into water (or onto land where it is likely to pass into the drinking water).

Businesses are required to provide warnings to individuals who are exposed to listed chemicals in the course of their business. The required warning is general and need not even specify the name of the chemical: "WARNING: This product (or area) contains a chemical known to the State of California to cause cancer or birth defects or other reproductive harm."

Since the legislation is targeted at all California businesses, the scope is much broader than product safety legislation such as RoHS, REACH or CPSIA (which is targeted to manufacturers and importers). Building owners, retail establishments and workplaces are liable for environmental exposure to listed chemicals in the ambient air, indoor air, drinking water, standing water, running water, soil, vegetation, manmade substances or natural substances. Typically excluded products such as food, restaurant meals, alcoholic beverages and prescription drugs are included.

Safe harbor levels are calculated in terms of daily intake levels through inhalation, ingestion or skin contact. Unlike RoHS, there are no maximum concentration levels below which a listed chemical may safely occur in a product. It is the amount of human exposure to the chemical, not the amount of the chemical in the product itself, that is controlling.

Proposition 65 is enforced by lawsuits filed against businesses. Although the California attorney general has primary responsibility, lawsuits have been filed by district attorneys, city attorneys, consumer advocacy groups, and private citizens/law firms. Penalties for failing to provide the required warnings can be as high as $2,500 per violation per day.

This summary of Proposition 65 is designed to provide you with an accurate, easy-to-understand overview of the topic. However:
ê We have not attempted to cover the implementation issues that need to be addressed at your company or in your supply chain. For this type of assistance, please email or call us at 972-679-8996 to inquire about our services.
ê This summary does not constitute legal advice. The actual standard in the original language should be reviewed and used for all business, legal, and product compliance purposes.

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