Environmental Justice Communities and Asthma

This is very useful info for helping families control HOME and SCHOOL factors that affect asthma. Any strategy/suggestions for how to help families/communities when the environmental threats are coming from outside the home--environmental injustice issues such as close-by chemical treatment plants (e.g., sewage, water), or high voltage power lines and the radiation and micro-pollutants that accumulate around such lines, off-gassing from dumps, etc? Some communities are inundated with injustices from the outside and those environmental injustices contribute to respiratory and other disorders. Any experience/ideas/help?