We live in Yosemite Lakes Park, CA. A private HOA community. There are a few million gallon water tanks scattered around. They are about 1,500 feet higher than some of the homes. As far as I know there is no law of any kind that requires any water company to provide the water at any particular pressure.
When I lived in San Jose I had 95 psi at the faucet.
In both cases there is a pressure regulator where the water enters the house. Where I live now the water line to the RV is connected between the meter and the house pressure regulator. When I lived in San Jose I ran a one inch water line to the back yard at full city pressure. This allowed me to top off the pool faster and it also made it very nice for hosing off the patio, until the water problem arose.
After we bought the house in YLP we lived in the MH for about a month, while we had the entire house painted and replaced all of the carpets. During this time is when I found out how high the water pressure was. So we, as already suggested, switched over to using water in the on board tanks via the small electric pump. This was annoying but doable. We did shower in the house.
Most water pressure regulators for a drip irrigation system will not tolerate 128 psi for the water inlet side. There are some that will tolerate high inlet pressure.
Wayne in Coarsegold near Yosemite
2013 Forest River Solera 24R
2014 Jeep Wrangler Rubicon
ATV trailer for the following toys
2008 Yamaha WR250R,2009 Honda CRF150F
2008 Polaris Scrambler 500