Two-thirds of Ohio's housing stock predates 1978, so most homes in the state likely contain lead paint, according to Lead Free Ohio data cited in a WHIO-TV report. In Montgomery County, the outlet reported, residential areas in 19 to 27 ZIP codes include homes likely to have lead paint.

Health officials say lead exposure in children often produces no immediate symptoms. They recommend blood testing before age 6. Ashley Stevely, interim director of the Center for Community Health at Dayton Children's Hospital, said a child's environment is a major factor. She described zero lead in blood as ideal and said parents should look into exposure sources when a child's level is above 3.5.

Stevely said risks are not limited to paint. She pointed to older toys, including pre-1980s Hot Wheels, as possible sources. Jeffery Ringiesn, program manager for the Lead Poisoning Prevention Program, said ceramic bowls made before 1978 can contain large amounts of lead.

Joyce Cantrell, a homeowner in a house built in 1955, said she has lived there nearly 15 years and has never had it tested for lead. She said she wants to learn whether she has been exposed because of the health risks.