Why is there a proposition 65 warning on this product??

This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. (US only). The Chemical Reaction Statement was added to device user guide to comply with the California Safe Drinking Water and Toxics Enforcements Act of 1986, more commonly known as “Proposition 65” or simply “Prop 65”. Prop 65 is a law requiring that the Governor of CA provide a list of chemicals known to State to cause cancer, birth defect or other reproductive harm; the list is updated quarterly and currently contains over 800 chemicals. More information can be found on the State of California’s website at: http://oehha.ca.gov/prop65.html. If you are in need of any assistance, have additional questions, or would just like to see our helpful tips, check us out on Twitter @LGUSSupport Facebook https://www.facebook.com/LGUSA/ ^CP