her family was exposed to quite a bit of environmental toxicity uranium will break down to radon, radium. they are classified as carcinogens. i think it would bebe very interesesting to find out exacty what the source of the uranium contamination is, largrgely because her case was a little severe. i think it's a little unusual. >> now donna has no safe well water coming to her home and must rely on bottled water for everyday needs. >> you can imagine how many i go thrhrough and j just the, um, you u know, , not being able tot have the simple convenience of running watater in your homome that's--that's safe. so it's a-- it's a chore. >> the story isn't much different in one tri-county area of pennsylvania. instead d of one coal-fired powr plant, there are 6. unlike plant scherer, which burns pure coal, these plants are burning coal waste left over by previous mining. coal waste, also called culm, can now be burned to generate power. but there are some downsides. not only is coal waste less efficient than regular coal, it also has higher concentrations of heavy metals. >> matter doesn't di