Leaky tap?

Kim_kim

I’ve called it leaky tap, it’s the bathroom basin, it’s odd really.  It doesn’t drip all the time, sometimes it’s perfectly normal, sometimes it trickles the cold water (it’s a mixer tap).  Is it likely to be a washer?  

I’m hoping so as the taps match the bath taps, so if it was a tap problem I’d have to change both.  

grumbler

If it's more than quarter turn then it's not a ceramic valve.

If it's not ceramic, then it's a washer.