Plumbing supplies and california prop 65

Are there any plumbing supplies which do not contain any chemicals known to the state of California under proposition 65? If yes, where can I buy them? If not, why?

EDIT: by “plumbing supplies” I meant mostly pipes, push-to-fit connectors, gaskets and the likes, for application to drinking water. To be even more explicit, I recently bought and installed a reverse osmosis system, to have safer drinking water for my family. Looking at most of the pipes and push-to-connect fittings, all of them have the prop 65 warning This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Now you may dismiss this with “those paranoid Californians, the other authorities know better”, yet maybe a small amount of truth can be in that. Moreover, tell to the people of Flint, MI about trusting the authority.

Therefore, I would like to use products known to not contain any of the prop 65 chemicals. I could not find any, hence my question (which is not purchasing advice): do such things exist? If not, there must be a reason, so why?

Thanks in advance