Did you know that if you leave the faucet leaking for a whole year, you will waste enough water to fill a pool? A small leak can waste up to three gallons of water per day, while a big faucet leak can waste about 30 gallons of water in a day. What are the causes of a leaky faucet? Finding the causes of a leaky faucet is the first step towards faucet repair. Some of the common reasons for a leak include: A loose O-ring If the cartridge in the faucet has a loose O-ring, leaks will follow. The cartridge is the valve that regulates the flow of water into the spout of the faucet. The O-ring is a small disk that keeps the handle of the faucet fixed. So if the handle of the sink is leaking, then the O-ring is probably worn out. Fix tip The best course of action is to replace the O-ring with the help of a professional plumber. A damaged cartridge The O-ring may be fine, but the cartridge may be damaged because of wear and tear. When the cartridge is worn out, it causes the faucet to leak. Fix tip Replacing the old cartridge with a new one is the best solution. Ensure that you first have a matching cartridge to replace the old one with. Consulting an expert plumber to do the replacement is advisable. A decayed valve seat Is the leak stemming from the spout of the faucet? If this is the case, then the valve seat may be corroded. The valve seat connects the faucet to the spout. The corrosion of the valve seat could be a result of water sediments building up, thereby causing the leak. Fix tip The best long-term fix for this is to clean the valve seat regularly with the help of a skilled plumber. If the valve seat is too decayed, then replacing it with a new one is the best alternative. Damaged seals If both the outlet and inlet seals are corroded and completely worn out, they will cause the faucet to leak. The seals tend to wear out over time due to the accumulation of water sediments. Fix tip Replacing the seals will help to fix the leaky faucet. Here at PSI, we offer professional plumbing services in Eagle and Summit counties in Colorado. We can help you trace the cause of the leaky faucet. Give us a call today and watch how your water bill goes down.