water pressure temporarily _way_ too high
Posted by Eli Burke on October 17, 19100 at 10:16:08:
This morning I was awakened by a high pitched keening from the basement. The cold water pipe
on the water heater was vibrating. Turning on faucets changed the pitch, flushing the toilets made
the noise stop while the tank filled. Finally I turned on the outside hose to stop the noise. I had
an incredible amount of water pressure; I could shoot water 1.5 - 2 times farther than normal.

I finally figured out from the water draining into the sump that it was the pressure release on the
water heater that was making the loud noise whining noise. After about an hour of running the
outside hose I was able to turn it off and not have the noise return, although water did continue
to trickle into the sump. The problem didn't return in the 2 hours before I left for work.

So my question is, do I have a faulty pressure regulator? Was this some sort of transient
external problem that somehow bled pressure into the house plumbing? Should I be worried
about a re-occurance?

Thanks for any advice

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