No Plumber Needed! DIY Guide to Fixing Weak Kitchen Sink Water Pressure
Is your kitchen faucet flow frustratingly slow? Do you have to crank the handles all the way open to get more than a trickle? Low water pressure at the kitchen sink makes washing dishes and filling pots a time-consuming chore.
The good news is you don't necessarily need an expensive plumber to restore full water pressure. In many cases, the cause is a simple DIY fix like clearing clogged aerator screens or sediment from the supply lines. Read on to learn what causes low kitchen sink pressure and step-by-step solutions.
Symptoms of Low Water Pressure
How can you tell if the water pressure from your kitchen faucet is lower than it should be? Signs include:
- A slower, weaker water flow or stream
- Having to turn faucet handles completely open to get water flow
- Taking longer to fill up the sink basin or pots/pans
- Lower pressure at the kitchen sink compared to other faucets in your home
What Causes Low Water Pressure in the Kitchen?
There are several common culprits behind decreased water pressure from the kitchen sink faucet:
Clogged Faucet Aerator
The aerator screen on the tip of faucets collects mineral sediment over time. This clogs the aerator and reduces water flow.
Galvanized Pipes
Old galvanized steel pipes corrode and accumulate mineral deposits that cause restrictions.
Worn Faucet Washers and Cartridges
Faulty rubber washers or plastic cartridges inside faucets allow water to leak through, diverting flow.
Clogged Shut-Off Valves
Sediment can build up in the supply line shut-off valves, impeding water flow.
Kinked Supply Lines
Kinks and cracks in the flexible supply lines going to the faucet restrict water flow.
Sediment Buildup in Pipes
Mineral deposits and sediment collecting in supply pipes reduces pressure.
Faulty Water Pressure Regulator
A regulator valve that is broken or set too low prevents full pressure.
Clogged Water Filter Cartridge
A water filtration system with a clogged cartridge restricts flow to the faucet.
DIY Solutions for Restoring Water Pressure
Before calling a plumber, try these handy DIY fixes to restore full pressure:
Clean the Faucet Aerator
Remove the aerator screen at the tip of the faucet and soak it in vinegar or lemon juice to dissolve mineral deposits. Rinse and reattach.
Check Shut-Off Valves and Supply Lines
Inspect shut-off valves connected to water supply lines under the sink for corrosion or clogs, and straighten any kinked pipes.
Flush the Supply Lines
Turn on the faucet and let the water run for several minutes to purge sediment from supply lines.
Replace Faucet Washers and Cartridges
Worn rubber washers are easy to replace with basic tools. Plastic cartridges screw or latch in place.
Install a Water Pressure Regulator
If water pressure exceeds 80 psi, install a regulator valve on the main home supply line and adjust the pressure setting.
Replace the Water Filter Cartridge
For sink filters, replace the cartridge per manufacturer guidelines, typically every 3-6 months.
Preventing Low Water Pressure
You can avoid many of these issues in the future by:
- Regularly cleaning aerators
- Annual supply line flushing
- Replacing washers and cartridges every few years
- Using plastic rather than galvanized supply pipes
- Checking pressure regulators
- Changing water filters on schedule
When to Call a Plumber
If DIY troubleshooting doesn't resolve low water pressure, it's time to call a plumber. Professionals have the tools to fully inspect supply pipes and shut-off valves that may be buried inside walls. They can also replace corroded galvanized pipes or install a booster pump if low pressure affects your whole house.
Don't tolerate frustratingly slow water flow from the kitchen faucet. In many cases, there are quick and easy DIY ways to restore full pressure without an expensive plumber. Start by cleaning aerators, checking supply lines, and replacing worn washers. With a little elbow grease, you can have your kitchen sink pressure back to normal.