Some parents of lead-poisoned children, as well as individuals who are aware of the issue through professional experience or otherwise, feel strongly enough about lead poisoning as to take action beyond their own homes, into their communities, or in state or national policy addressing lead poisoning prevention.
You can reach out to others in a variety of ways. These can range from discussing the issue with friends and clients you come into contact with in the course of your work and social life, to going out into the neighborhood and knocking on doors to warn people about the hazards you have learned about, to conducting community outreach with an organized group.
You can work toward long-term solutions to lead poisoning as a public health and social justice issue by addressing it at the public policy level, pushing for stronger laws and programs addressing lead poisoning in your state or on the federal level.
You will be better able to make real changes in your community if you work together with others who have like concerns. The key is organizing. Organizing is people working together toward the goal of determining their own future and improving the quality of life, not only for the members of that organization but also for the general public.