Isn't lead banned?

No. It's still used in the manufacture of electrical storage batteries, ammunition, various chemicals, and fishing sinkers. It's also still used in industrial applications, such as in yellow road-marking paint, and red corrosion-resistant steel paint on bridges.

The use of lead as additives in paint, gasoline, solder, and pipes has been reduced or eliminated in some cases, the old products or their remains can still be found in the environment.