Proposition 65

What is Proposition 65?

Proposition 65 is another name for the Safe Drinking Water and Toxic Enforcement Act of 1986. It is a California law that aims to protect drinking water sources from any toxic substances that can cause harm.

Proposition 65 tries to reduce or eliminate exposures to chemicals that can cause cancer, birth defects, and other reproductive problems by requiring warning labels.

Any substances that are known to have a 1 in 100,000 chance of causing cancer over a 70-year period or substances that cause birth defects must be labeled.

The act makes it illegal for anyone to discharge any of those substances into drinking water sources and for businesses to knowingly expose the substances to anyone without providing a clear warning. 

Chemicals that are covered by Proposition 65 are regularly maintained and can be added or removed from the current list based on the current scientific information.

Some of the most popular chemicals on the Proposition 65 chemical list are Lead, Crystalline, Silica, Chromium, Wood Dust, and BPA.

The State of California is required to maintain and publish a list of chemicals known to cause cancer, birth defects or other reproductive harm. The list is administered by the Office of Environmental Health Hazard Assessment (OEHHA) and is updated at least once a year. First published in 1986, the list now includes approximately 900 chemicals. A full list can be found at



Does StoneyCreek provide Proposition 65 warning labels?

Yes, chemicals that are covered by Proposition 65 are regularly tested by StoneyCreek and labels are applied to all items that require the Proposition 65 warning.



What chemicals are found in StoneyCreek products? 

StoneyCreek® products have been tested by a third party laboratory; Intertek. The chemicals that exceed safe harbor levels are: Styrene (present in all cast stone products), Nickle (present in yellow ink) and Titanium Dioxide (present in white ink, white Stone colors). Test results available upon request.