Rusty water, also known as "red water," is water that appears discolored due to high levels of iron, manganese, or other minerals present in the water. While rusty water may not necessarily be harmful to drink, it can be a sign of potential problems in your plumbing system.

Rusty water can stain clothing, appliances, and fixtures, and it can also have an unpleasant taste and odor. It can also indicate that the pipes in your home or building are corroded, which can cause leaks and other issues. Additionally, high levels of iron and manganese in drinking water can cause health problems, such as gastrointestinal distress and other complications.

In summary, rusty water may not be immediately harmful, but it can be a sign of underlying problems that should be addressed to ensure the safety and quality of your drinking water.