Common causes of a dripping faucet and how to fix them

Faucets regulate the flow of water using washers, gaskets, and rings that can deteriorate over time. While some problems are easy to identify and fix, others require more expertise. Let’s take a look at the most common causes of a dripping faucet.

1. Worn washer: The washer is forced against the valve seat every time the faucet is used, and this constant friction can cause it to wear out. As a result, leaks are likely to occur due to imperfect sealing. Washers can be made of rubber or other materials, and the rate of deterioration will depend on the frequency of use and the quality of the water.
2. Defective O-ring: An O-ring is a small disk attached to the stem screw that helps keep the faucet handle in place. It is also susceptible to wear from regular use. A loose or worn O-ring can cause the faucet to drip near the handle.
3. Corroded valve seat: The valve seat connects the faucet and the spout in the compression mechanism. Water sediments can accumulate and corrode the valve seat, leading to dripping from the spout if not cleaned regularly.
4. Incorrect installation of washer or O-ring: If the washer or O-ring is not installed correctly or is not the right size, it can cause dripping. An incorrectly sized washer will not create a proper seal, allowing water to leak.
5. Worn cartridge: Faucets with cartridges can experience leaks when the cartridge itself wears out. Since cartridges vary widely in shape and size, an exact match is needed for replacement.
6. High water pressure: Sometimes, water pressure can be too high for the faucet, especially when it does not need to supply water elsewhere. This can prevent water from flowing properly and cause it to accumulate and come out of the faucet.
7. Broken plumbing: Issues with pipes or fittings can also cause the faucet to drip. If a pipe breaks or a fitting loosens, a leak can occur, which may appear to be coming from the faucet but is a sign of a larger plumbing issue.

• Adjustable wrench
• Screwdrivers (flat and Phillips)
• Replacement parts (washers, O-rings, valve seat, cartridge)
• Plumber’s grease
• White vinegar (for cleaning)
• Cloth or sponge

1. Turn off the water supply: Shutting off the water supply to the faucet is crucial before starting the repair. Locate the shut-off valves under the sink and turn them clockwise. Open the faucet to release any remaining water and pressure in the pipes.
2. Disassemble the faucet: Remove the decorative elements from the faucet handles, which are usually held in place by a screw. Use a screwdriver to remove the screw and carefully remove the faucet handle. Depending on the faucet design, this may expose the internal parts, such as the O-ring and stem.
3. Inspect the parts: Once the faucet is opened, check the condition of the washer, O-ring, and valve seat. Look for signs of wear, corrosion, or improper size.
4. Clean or replace the parts: If the washer or O-ring is worn, replace them with exact matches in size and shape. Clean the valve seat with white vinegar to remove any sediment buildup, or replace it if corroded. If the cartridge is damaged, note the brand and model and purchase a suitable replacement.
5. Reassemble the faucet: After replacing or cleaning the necessary parts, reassemble the faucet in the reverse order that you disassembled it. Apply plumber’s grease to any threads or moving parts to ensure smooth assembly.
6. Test the faucet: Once the faucet is reassembled, slowly turn the water supply back on and test the faucet. Check for any leaks and ensure that the dripping has been resolved.
7. Professional help: If the problem persists or you are unsure about any steps, it is advisable to call a professional plumber. They can diagnose issues that may not be apparent, such as high water pressure or broken pipes, and ensure a proper solution.

Dripping faucets can be caused by various problems, most of which can be resolved with some DIY and the right tools. If the cause is identified, whether it’s a worn washer, a defective O-ring, or a more complex plumbing issue, the problem can be fixed and further water waste can be avoided.