In the US, it seems at the policy level this would be impossible to implement. From a practicality level, it would take very long to validate to the point of stifling innovation (good or bad) and would require international cooperation. Compared to medical research, medical interventions are risk based at the individual level and we are willing to accept marginal improvement with awful side effects. Chemicals apply risk at a societal level and settng by appropriate limits seems difficult vs mandating better waste containment.