lead pollution
Environmental contamination caused by lead, often from industrial sources or old paint.
Lead pollution has a serious impact on children's health.
鉛中毒 refers to lead poisoning, the health condition caused by lead exposure, whereas 鉛公害 refers to the environmental pollution itself.
Compound of 鉛 (なまり, 'lead') and 公害 (こうがい, 'pollution').