Tap running slowly — blocked aerator
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Most likely cause & what to check
The aerator is the small mesh/screen insert at the tip of the tap spout. In hard water areas (most of England), it accumulates limescale and restricts flow significantly.
Unscrew the aerator from the end of the tap — it should turn anti-clockwise by hand. If stiff, wrap the jaws of pliers in tape to avoid scratching the chrome and use them to turn it.
The aerator consists of a housing, a mesh screen, and often a flow restrictor disc. Tap it on a hard surface and rinse — you will likely see white limescale fragments.
Soak the aerator parts in undiluted white vinegar for 30–60 minutes, then scrub with an old toothbrush.
Refit the aerator and test the flow — it should be restored immediately. If the aerator is heavily corroded or the plastic is cracked, replacement aerators cost £1–£5 from any plumbers' merchant.
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