Leaky toilets can cause a lot of problems for the environment and your wallet. When there is a leak in the cistern (the top part of the toilet), drops of water are leaking into the bowl of the toilet, causing the cistern to continuously add more water to make up for what is lost. This causes unnecessary water usage and increases your water bill. Therefore, check to leaking cisterns to avoid this.
According to smarterhomes.org.nz, you can check to see if you have a leaky cistern by adding a few drops of food coloring into the cistern. If the food coloring ends up in the toilet bowl without flushing it, then there is a leak. If the food coloring stays in the cistern, then there is no leak. To fix the leak, you can replace the “underwater valve seating washer,” the rubber piece that keeps water in the cistern, and these are found at most plumbing stores. This will cost you a few dollars, however the cost is a lot less than how high your water bill would be if you didn’t replace it. Visit www.smarterhomes.org.nz to find out more "easy ways to save water" in your home.