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Dianne4098
low water pressure
Dianne4098

All of my faucets are slow. They start out with a burst of full pressure for about 1-2 seconds then start slowing down to a slow stream of water. I have an old water softener that has been inoperable for around 20 years. I have been told that because it has not been put on bypass (didn't know I had to do that) that some "silt" from it could be in the lines, causing the problem. Where do I go from here?

Fencepost
Re: low water pressure
Fencepost

There is a blockage in the line. Basically, what happens is that when all the faucets are shut off, the pressure builds up to normal. When you open the faucet, the pressure is released, but because there is a blockage, the water can't flow fast enough to maintain the pressure, so the pressure (and the flow) drops. Shut off the faucet and the pressure builds back up.

It's quite possible that the water softener is the problem. On the softener itself near where the pipes enter there should be a lever that will put it into bypass mode. If not, there may be a valve that jumpers/crossovers between the input and the output piping. Open this valve and close the valves going to the softener.

There's a chance you won't even be able to move the bypass lever because it's gotten all crusted up with scale. If that's the case, the softener will need to be removed from the line and the line stubs connected together.

Another possibility is if you have any galvanized steel (grey metal) water pipes or fittings, those could be internally corroded to the point of being nearly blocked. The corrosion is most likely to happen at fittings, where there is a bit of exposed, ungalvanized steel as a result of cutting threads in the pipe. (They can't galvanize the threads because that would make them too rough to seal properly.)

A third possibility is a partially blocked or failing main shutoff valve.

dj1
Re: low water pressure
dj1

My guess would be similar.

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