Yet there are continued problems linked to lead poisoning. Children exposed to high levels of lead can develop learning disabilities, speech problems and nervous system damage. One reflection of continued concern was a community meeting to address the problem of lead poisoning in October 2000. Food-based contamination is a perennial concern. There were 441 cases of foodborne illnesses in the county in 1997.
Experts say some species are increasing in number but others are decreasing.
For example, there are fewer Black Terns, a type of bird in the Braddock Bay area. This may be due to development of shorelines. These species can only survive if water quality is good. This includes 507,386 pounds annually on grass and garden plants such as flowers. Exposure to pesticides in agricultural work has been linked to a higher risk of cancer.