There's a facility not far from here that recycles car batteries, it's an old lead mine and smelter, and has been recycling lead for decades. In fact my wife used to live about a mile away as a child, and all children were provided free milk by the facility. Milk helps prevent possible lead poisoning problems in children, and there are also sensors all over the local environment, monitoring the lead levels.
As far as I'm aware there's never been any problems with lead levels, and the free milk was more a political act than anything else!.