Why Picher, Oklahoma Is Considered America’s Most Toxic Town

Picher, OK: A Superfund Legacy of Lead & Zinc Mining

From the early 1900s to the 1970s, Picher was a major lead‑zinc mining hub. Decades of extraction left massive piles of chat (mine waste) laced with lead, cadmium, and other heavy metals.

Consequences

• Soil, groundwater, and surface water contamination.
• Elevated blood‑lead levels in residents—especially children—causing developmental delays, kidney damage, and cancer risk.
• Designated a Superfund site by the EPA; ongoing remediation.
• Population plummeted from thousands to ~11 (2013); most structures demolished.

Picher stands as a stark example of industrial environmental devastation.