To repair a leak on the toilet tank edge, first shut off the water supply and drain the tank. Remove the tank lid and inspect the overflow pipe, bolts, and gaskets. Clean debris from the overflow pipe and tighten the bolts securing the tank to the floor. Replace worn-out tank bolts or gaskets if necessary. Refill the tank, test for leaks, and adjust as needed.

Leaky toilet tanks often result from worn components or loose connections. According to the Environmental Protection Agency (EPA), 30% of household water leaks originate from toilets, with faulty flappers or tank bolts being common culprits. A study by the American Water Works Association found that a single leak can waste up to 200 gallons of water annually, contributing to higher utility bills. Tightening bolts prevents gaps between the tank and floor, while replacing damaged gaskets or bolts addresses worn parts. The EPA estimates that fixing a running toilet can save the average household $100 annually in water costs. Additionally, the National Association of Home Builders highlights that 15% of toilet leaks go unnoticed for months, worsening damage to floors and structural integrity. Proactive maintenance ensures longevity and cost efficiency, aligning with the EPA’s recommendation to perform monthly toilet checks.