Study Links Lead Service Lines to Elevated Blood Lead Levels in Children

A new study in Environmental Science and Technology reports a strong connection between the presence of lead service lines (LSLs) and increased blood lead levels in children living in Cincinnati, Ohio, and Grand Rapids, Michigan. Although multiple factors influence lead exposure, the study found that the prevalence of lead pipes was a more powerful predictor of elevated blood lead levels than the standard risk indicators used by the EPA and HUD. In both cities, LSLs were most common in neighborhoods with housing built before the 1950s.

The authors note that replacing lead service lines is a critical public health measure to reduce exposure. Lead is highly toxic and has been associated with heart disease, cognitive damage, and reproductive and neurological harm. Despite national progress in lowering average blood lead levels, localized hotspots persist, often in communities facing economic and social inequities. The study supports increased federal investment in LSL replacement as an effective strategy to safeguard public health.

24-11-2025