The answer to 'why is my hardwood floor water damage' is that hardwood floors can become damaged due to exposure to water or excess moisture. Common causes include spills, leaks, high humidity, or improper cleaning methods. Symptoms of water damage on hardwood floors include warping, cupping, buckling, discoloration, and mold growth.
To address the issue, it's important to quickly clean up any spills or leaks and ensure the area is properly dried. You may be able to DIY minor water damage by using fans, dehumidifiers, or specialty wood floor cleaners. However, for more extensive damage or if the subfloor is affected, it's best to call in a professional hardwood floor restoration company to assess the extent of the damage and determine the best course of action, which may involve sanding, refinishing, or even replacing the affected boards.