Lead Sources
- How Lead Got into the Environment
- Major Sources of Lead
- Other Sources of Lead
- References
During the last 100 years, lead was added to many U.S. products including paint, gasoline, water pipes and health care supplies. About 330 million tons of lead were mined for these purposes. Even though lead's use is now restricted and regulated because of known health risks, the heavy metal is still mined and added to products.
Because it does not break down, most of the lead ever produced remains in soil, dust and other environs. The odorless, colorless, tastless metal so widely present in homes, yards and workplaces can only be detected through chemical analysis.
In most U.S. communities, the major sources of lead are old, peeling lead-based paint, contaminated soil and dust, drinking water, and household products.
The two biggest contributors of lead to the envionment are leaded paint and gasoline. Leaded paint use peaked in the 1920s and gradually fell off until its ban in 1978. At its zenith in the 1970s and before its use was restricted in 1986, leaded gasoline spewed up to 250,000 tons of lead per year into the environment.