Your bathroom sink flow is weak. Your faucet has no aerator to unscrew. That is common on some faucets. The good news is you can often clean it.
Why does the flow drops
Many “no aerator” faucets still have tiny outlet holes. Some have a hidden screen in the spout. Hard water leaves mineral crust. Rust flakes can also clog the outlet.
Fast checks first
- Open both shutoff valves fully.
- Test hot and cold water.
- Note which side is worse.
How to clean it
- Protect the sink. Put a towel in the bowl. Cover the drain.
- Flush the lines. Turn off both shutoffs. Remove each supply hose. Aim it into a bucket. Crack the shutoff for two seconds.
- Scrub the spout tip. Use warm water and a soft brush. Then use a cotton swab.
- Soak for minerals. Fill a small bag with white vinegar. Band it over the spout. Wait 20 minutes.
- Rinse and test. Run water for 30 seconds. Watch for grit.
- Still low? Clean the cartridge. Shut the water off again. Remove the handle and cartridge. Rinse parts under clean water.
Avoid metal picks and drill bits. They can scar the outlet holes. Use a wooden toothpick if needed.
Do you need a new faucet?
Replace the faucet if the body is cracked. Replace it if it is badly corroded. Replace it if parts are not sold now. Otherwise, cleaning often restores flow.
Question and answer
Q: Can I clean a faucet that has no aerator?
A: Yes. Most slow flow comes from hidden screens, mineral crust, or debris in the supply lines.
Helpful external resources
I’m Chris Mayer, writing for Plumbing 101.