Despite these guidelines for testing and prevention,prob-lems remain. First, lead inspections and remediation often come too late,after a child has been poisoned.A positive blood test triggers an inspection, and a positive inspection triggers remediation proceedings. CDPH cannot enforce re-mediation until a child living in a home tests positive. Sec-ond, inspectors may focus too heavily on lead paint.While lead paint is the primary cause of poisoning [15], there are of-ten multiple sources of poisoning, especially for higher blood lead levels [11]. In 5% of cases, no source can be identied. Third, lead continues to poison some segments of soci-ety more heavily than others. A survey conducted in two of Chicago's riskiest neighborhoods found that 27% of chil-dren had elevated blood lead levels and 61% had never been tested previously [13].