Where does lead come from?
There are four main sources of lead in Cleveland.
Until 1978, lead was used in residential house paint to make the paint more durable. When leaded paint deteriorates, particles of lead are released as dust into homes. Babies can inhale or ingest lead dust inside a poorly maintained home. Lead dust can be tracked in from outdoors.
TetraEthylLead was used in gasoline sold in the US from the 1950's to the 1980's. Since lead does not burn, particles of lead were released in car exhausts and landed on soil adjacent to roads and highways.
Since Roman times, lead was used in the pipes that carry water to your home and in plumbing fixtures. Even if your home has copper plumbing, the solder use to join copper pipes contains lead. Lead molecules can dissolve in the water running through lead plumbing and fixtures. Many water companies treat household water with orthophosphate to reduce the likelihood of lead getting into drinking water. Home water filters can help. PS: because lead is sweet, Romans added lead acetate to wine for a cocktail. Any surprise that the Roman Empire fell?
Industrial wastes are sometimes full of lead. Lead acid batteries used in automobiles. Bullets and other munitions use lead. Smokestack lead emissions can affect whole communities. Industrial wastes can end up in the air, on the ground or in the water.