. >> i i put u up a map of the wh counun s so that we could see where o our childreren were loc for our case workerers. and as the years w went on, we noticed that toms river had . come one big dark area and it was a bibig concern. i d did reach out to the state health department numerorous times and told ththem o of my concern and was told over a and over again thahat t there was n problem. >> only later in the 1990's, ththe mid 1990's was there more and more information that was coming o out. but,t, you know, some of the water supply had been contaminated with certain chemicals. >> 1996 was particularly crucial for people of toms river. the state health authorities reported the rate of childhood brain and central nervous system cancer was excessive. with iver is now a town cancer. >> 69 families, 69 children and their parents are usually considered a cluster. but epidemiologyells us in n a commununity there may be e an unusual pattern of disease, either defined in space,, geographically, or inn time e t develops over a period of time. whenen that happens we call it cluster r and a c c