I live in a multi unit condominium building (approx 8 units per building), lately water pressure coming out of our faucets has been abnormally high for about 2-5 seconds until it reduces back to normal pressure. Cold water lines are maintained by the community (shut off, regulator). Over the last two months we’ve actually had a series of water issues 1. Our neighbors cold water lines burst and flooded our master bath and bedroom 2. A month later we had a hot water slab leak directly under our which resulted in reroute piping. When our hot water slab leak occurred I began shutting off the hot water line when we weren’t planning on using it to prevent leak. During this time I noticed increased pressure in cold water, enough that each time i went to the water dispenser in fridge I would get a hammering noise and slow water dispense. I found that if I opened the cold water faucet and bled the line the water dispenser would operate normally. As I mentioned above, we corrected the slab leak and reroute hot water pipes throughout but I’m still dealing with this high water pressure issue and water dispenser doesn’t function until lines are bled. Thoughts? I’ll be reaching out to my plumber on Monday but I’m not sure what the issue could be.

  • Hello, and welcome to Home Improvement. My engineer-but-not-a-plumber guess: the regulator is slowly bleeding high-pressure water into your system, so after a while of no use the pressure goes up and up. And, you should probably take our tour so you'll know how best to participate here. – Daniel Griscom Jul 6 '19 at 16:30

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