From Marian Wright Edelman in a recent article on the Flint water scandal:
Children and families everywhere would benefit immediately from stronger, clearer and consistent national standards for measuring, monitoring, and reducing lead exposure that are enforced. The incalculable child harm from lead poisoning should be reason enough to act now with great urgency and persistence. And the nation’s bottom line would benefit too. Every dollar invested to decrease lead hazards yields an estimated return of $17:1 to $221:1. These cost benefits exceed the return on vaccines long considered one of the most cost-effective public health interventions.