A potential source of mercury exposure that could remain for years is from:

Stored containers of paint produced prior to 1990 represent a significant potential source of mercury exposure because many paints manufactured before this time contained mercury as a preservative. When these paints are improperly stored, disposed of, or disturbed during renovation or demolition, they can release mercury vapor or lead to contamination of surrounding environments.

Mercury is a toxic element that can accumulate in the body and have detrimental health effects. The long-term risk associated with older paint products is that the mercury can remain contained within the paint for years, particularly if the paint is intact and stored properly. However, if the paint starts to deteriorate, it can present a hazard, especially during activities that generate dust or when the paint is removed or sanded.

In contrast, while the chloro-alkali industry and emissions from battery manufacturing do present risks for mercury exposure, they are generally associated with occupational settings or specific areas where such industries are located, thus not typically posing a long-term residential hazard. The continued use of mercury in dental practice, although it does contribute to mercury exposure, is more related to clinical settings rather than a long-lasting source in non-professional environments. Hence, stored containers of pre-1990 paint are particularly concerning as they can expose individuals to mercury over extended