Water pressure?

WTP-GC wrote:

Lynnmor wrote:
Seeing water pressure vary greatly is a sure sign of an inadequate supply system.

Ehhhh...not always. For your RV that might be running 35-45 PSI, a drop in 10-20 PSI is very noticeable. In your home that might be able to handle 70-80 PSI, the same drop in pressure would not be noticeable. In my opinion, the biggest problems many CG's have is that they can't predict what the usage is. If the CG is nearly full and everyone wants to take showers in the morning at the same time the maintenance staff sees the pool needs to be re-filled at the same time the laundry facilities are running...the pressure is going to be what it is. Which is another reason why running off the tank makes me not worry about this.

The applicable code, NFPA 1194, says on potable water "Where water is distributed under pressure, the water supply system shall be designed to provide a minimum flow pressure of 20 psi (137.8 kPa) with a minimum flow of 2 gpm (9.1 L/min) at any outlet." On a newer system, that's still rather low and doesn't say if that's all sites turned on at the same time or just a portion of them. Problem is, many CGs have been around for decades and predate this code requirement and/or are woefully in need of repair and replacement of piping. In some cases, low pressure can be due to the local municipal system. As Lynnmor pointed out once, if low CG pressure is your issue, just use your FW tank & pump as needed.