Why Does My Sink Have Low Water Pressure?

Experiencing low water pressure in your sink can be frustrating, especially when washing dishes or filling up a pot takes much longer than usual. There are several potential reasons why your sink's water pressure is lower than expected, ranging from minor blockages to more serious plumbing issues. Below are some of the most common causes and how to address them.  

1. Clogged Aerator
The aerator is the small mesh screen located at the tip of your faucet. Over time, mineral deposits, dirt, and debris can build up, restricting water flow. This is especially common in areas with hard water.  
Solution: Unscrew the aerator, soak it in vinegar for a few hours to dissolve mineral deposits, then rinse and reattach it.  

2. Blocked or Damaged Supply Lines
Your sink's water supply lines may become clogged with sediment or even develop small leaks, leading to reduced pressure. If the issue is isolated to one sink, this could be the culprit.  
Check for visible leaks or kinks in the supply lines. If necessary, replace the hoses or clean them out.  

3. Partially Closed Shut-Off Valves  
Each sink typically has two shut-off valves (one for hot water and one for cold) located under the sink. If these are not fully open, they can restrict water flow.  
Solution: Ensure both valves are fully open by turning them counterclockwise.  

4. Municipal Water Supply Issues 
Sometimes, low water pressure is not caused by anything inside your home but rather an issue with the city’s water supply. This could be due to maintenance work, a water main break, or high demand in your area.  
Solution: Check with your local water provider to see if there are reported water pressure issues.  

5. Faulty Faucet or Cartridge  
Modern faucets often have a cartridge inside that regulates water flow. Over time, these can wear out or become clogged with debris.  
Solution: Remove the faucet handle, take out the cartridge, and clean or replace it as needed.  

6. Water Pressure Regulator Problems  
If your entire home is experiencing low pressure, the water pressure regulator (usually located near the main water line) could be malfunctioning.  
Solution: If you suspect a faulty regulator, it’s best to consult a plumber for repair or replacement.  

By identifying the source of low water pressure in your sink, you can take the necessary steps to restore proper flow. If simple fixes don’t solve the issue, consider calling a professional plumber for further assistance.