The answer to 'garbage disposal rusty water' is that a rusty garbage disposal is often caused by corrosion over time. This can lead to discolored, rusty-looking water coming from the disposal. Common causes include using the disposal with hard water, not running it frequently, or failing to clean it properly. The good news is that this is usually a cosmetic issue and doesn't necessarily mean the disposal needs to be replaced.
To fix a rusty garbage disposal, you can try cleaning it with a vinegar and baking soda solution or a disposal cleaning product. If the issue persists, you may need to replace the disposal unit. For severe corrosion or if you're unsure of the cause, it's best to call a professional plumber to inspect and repair the disposal.