Aluminum is a naturally occurring element that can be found in rocks, soil, water, and air. It can also be released into the environment through human activities, such as mining, smelting, and wastewater treatment.

Aluminum can be present in drinking water sources, and exposure to high levels of aluminum has been associated with health effects such as Alzheimer's disease and bone disorders. However, the health effects of aluminum exposure from drinking water are not well understood, and the current evidence suggests that the risk to human health is low.

The document provides information on the sources of aluminum in drinking water, the health effects of aluminum exposure, and the regulatory standards for aluminum in drinking water. The document also provides guidance on how to test for aluminum in drinking water and how to treat aluminum-contaminated water. The document emphasizes the importance of monitoring and managing aluminum levels in drinking water to ensure that they meet the regulatory standards and to minimize the potential health risks.