The answer to 'why is my toilet leaking water' is that there are several common causes, including a worn-out flapper, a loose tank-to-bowl connection, or a cracked tank or bowl. Leaks can lead to water damage and high water bills, so it's important to address them promptly.
Some of the most common symptoms of a leaking toilet include water pooling around the base, a constantly running toilet, or a higher-than-normal water bill. To fix a leaking toilet, you may need to replace the flapper, tighten the tank-to-bowl connection, or in more serious cases, replace the entire toilet.