Are Pressure Reducing Valves now considered code when building a new home? We had a home built about a year ago and within 6 months we had spiggots and TPR valves (water heater) leaking and garden hoses breaking because city psi is 120# and the plumber who did the house did not put one in. When I contacted the builder he had that plumber come back and put an expansion tank and PRV valve in. Life was good after that until I received a $410 bill and the builder and plumber say it's mine to pay and not included in the 1 year home warranty. Everyone I've talked to so far said this should have been done Day 1. I live in Iowa. Thoughts?

Someone did not do their homework before the foundation was poured. I believe the plumber did, what was ordered by the builder. If your builder, built other homes in the area, they should have been aware of the high water pressure. You can also ask your water supplier or local inspection authority, if it was required during construction.

Best Wishes

It would be a local issue. Here, only one city requires a PRV even if the pressure is less than 80 psi. Everywhere else, even though the pressures are high, they are a homeowner option.

Our code requires one when the pressure is 85 PSI or more.

Evidently the inspector passed the job without requiring one.

most codes require and MOST fixtures specify 80 psi maximum

check your local code

research and point the GC to the fixture manufacturer's specifications

IMO: you WERE 'raped'

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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

Common sense and good building practices would have any pressure 80 psi or greater reduced