In short the normal operating pressure for homes is in the 40 to 60psi (pounds per square inch) range for homes. Homes with plastic water lines generally have ratings that are 40 -60 psi and the older homes with brass fittings have a pressure capability of up to 100 psi.
We have put this notice on the web as we have a pumped system for our distribution which is regulated to be 60 psi at the water treatment plant. As you know Lyon Mountain drive rises considerably between the turnoff at the mail boxes and the west end of Lyon Mountain Drive so each home has a different pressure. To give some idea the west end of Mountain Lyon Drive has a pressure of about 40-50 psi under normal operating conditions, Mountain Lyon Place has a pressure of 60-70 psi, and the east end of Mountain Lyon Drive and Moose Drive has a pressure of 90-100 psi. Wintergreen Way is 70 psi plus.
As you can see the system pressure varies significantly throughout the system due to the elevation changes so each homeowner should consult his plumber or check the pressure at his home if there are any doubts about the rating of his water system). In the higher pressure areas there could also be spurious pressure relief valve discharges on the hot water tanks as water is heated.
The recommended supply pressure is 60 psi. There is no way to regulate the pressure at the pump. The suggested remedy is to install a PRV (pressure reducing valve) at each house. Cost for each valve would be approximately $170.00, plus plumbers charge for installation. It will be the responsibility of the homeowner to pay this cost. Failure to install a PRV could cause damage to house connection.
The Board of your Wintergreen Woods Water Utility wishes to advise the residents of the new 14-lot subdivision at Wintergreen Resort, of the following water service concerns raised by Corix Utilities (formerly McPherson & Thom), the Operator of our water supply system.
Upon testing the lines into the subdivision, the pressure was found to be 100 psi. This exceeds the recommended supply pressure of 60 psi. There is no way to regulate the pressure at the pump. The suggested remedy is to install a PRV (pressure reducing valve) at each house. Cost for each valve would be approximately $170.00, plus plumbers charge for installation. It will be the responsibility of the homeowner to pay this cost. Failure to install a PRV could cause damage to house connection.
I, (we)_______________________ resident of Wintergreen Resort Subdivision
Acknowledge that I (we) have read the attachment and understand that the Subdivision does not have an approved Fire Hydrant system as outlined by the Fire Underwriters standard. I (we) also recognize that the cost to install a PRV is the responsibility of the homeowner and not Wintergreen Woods Water Utility.