Low water pressure on cold side of shower faucet
What should I do (look for) to find out why the cold side of my shower faucet has developed VERY low water pressure, but not the hot side.
The sink faucet in that same bathroom is fine on both sides. All other faucets in the house are fine on both sides.
I don't have a hot water tank (tankless oil-fired boiler).
Thanks
Vermont
Low water pressure on cold side of shower faucet
Delta brand
One-knob handle
It may be 25 years old - that's when the house was built
The problem seemed to appear one day - about three weeks ago
It has gotten worse slowly - now the cold side is barely more than a drip