A weak or splashy stream might have a simple fix hiding at the end of your faucet.
You turn on the bathroom sink, and the water comes out in a trickle—or sprays sideways onto the counter. It’s easy to assume the faucet is wearing out. Sometimes, though, the culprit is a small part called the aerator.
Found at the tip of many faucet spouts, the aerator helps shape the water into a smooth stream. Mineral buildup and tiny particles can collect inside it over time, restricting flow. Cleaning it may be all your faucet needs.
See the Fix in Action
▶ Watch: How to Clean a Faucet Aerator | This Old House
Plumbing expert Richard Trethewey demonstrates how to diagnose and clean a clogged aerator. Watch the process, then check your faucet’s instructions before getting started.
A Small Part Worth a Closer Look
Not every aerator looks the same. Some have a visible metal housing at the end of the spout. Others sit recessed inside it and need a matching removal key. The collage above shows three common styles.
Before reaching for a tool, identify your faucet model and check its removal instructions. If the aerator doesn’t come off as directed, stop rather than forcing it.
Once you’ve confirmed the method, gather a small bowl, a clean soft brush, and the recommended removal tool. Cover the drain with a towel so a washer or other small piece can’t disappear down it.
Carefully remove the aerator and rinse away loose debris. If any pieces separate, lay them out in order and take a quick photo to make reassembly easier. Don’t pry apart a sealed insert.
For stubborn mineral buildup, follow the manufacturer’s cleaning instructions. If a vinegar soak is permitted, soak the removed parts as directed, gently brush, and rinse thoroughly. Keep cleaning solutions off decorative finishes unless their care instructions allow them.
Reassemble the aerator, reinstall without overtightening, and turn the faucet on. Check for a smoother stream and any leaks around the connection. Replace damaged screens or deteriorated parts instead of reinstalling them.
Helpful tip: Save the faucet’s model number in your phone. It makes finding the correct aerator or removal tool much easier later.
Still Getting a Trickle?
Cleaning won’t solve every flow problem. If it doesn’t help—or several fixtures suddenly have weak flow—a licensed plumber can investigate the cause.
If you need a replacement aerator, remember that sizes, threads, and designs vary. Bring your faucet’s brand, model number, and a clear photo to Falk Supply so our team can help identify a compatible part. Don’t know the brand or model number? Bring us a few clear photos of your faucet, and we’ll help you identify it and find the right part.