Water pressure in new house drops when washer turned on

L'Anda Johnson
November 29, 2019

We just moved into a new house - new contraction. The water pressure drops significantly when the washing machine or dishwasher are on. The pressure drops as well when I tub is filled, just not as significantly. The plumber is stumped at this point. The builder says just turn the water pressure up at the street (but the plumber says you can't just do that). The pressure coming into the house is 80 psi already. The PRV has been replaced, that is not the issue. I am at a loss.

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