The answer to 'pipe rusty water' is that rusty water is typically caused by corroded or rusting pipes. This can be a common issue in older homes with galvanized steel or cast iron pipes. Symptoms include reddish-brown, cloudy water that may have a metallic taste.
The main solutions are to identify and replace the corroded pipes, or to install a whole-house water filter system. For minor issues, you may be able to flush the pipes or use a chemical treatment, but more extensive pipe replacement is often required for severe rust buildup. It's generally best to have a professional plumber assess the problem and recommend the appropriate solution.