Water pressure diagnostic
Screw a pressure gauge onto an outdoor hose spigot, enter the reading, and see whether your pressure is low, normal, or high.
Enter a reading between 0 and 300 PSI
Ranges follow the Fix or Hire low water pressure guide (below 40 PSI is low, 45 to 65 PSI is where most homes run best). The 80 PSI limit is the static pressure threshold in the Uniform Plumbing Code, cited by water utilities such as the Las Vegas Valley Water District and the City of Tustin. Repair costs are national professional ranges.
How this calculator works
Enter the reading from a pressure gauge screwed onto an outdoor hose spigot. Most homes run best between 45 and 65 PSI, below 40 PSI is considered low, and 80 PSI is the static pressure limit in the Uniform Plumbing Code. The calculator tells you which band you are in and what to check or fix next.
Frequently asked questions
What is normal water pressure for a house?
Most homes run best between 45 and 65 PSI. Below 40 PSI is generally considered low.
What is the maximum water pressure allowed in a home?
The Uniform Plumbing Code threshold is 80 PSI. Water utilities such as the Las Vegas Valley Water District and the City of Tustin say owners must install a pressure regulator when static pressure goes above it.
How do I test my water pressure?
Screw a pressure gauge onto an outdoor hose spigot, make sure no water is running inside the house, and read the dial. Test again at a different time of day, since pressure can swing with neighborhood demand.
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Last updated October 2026. Reviewed by the Fix or Hire editorial team. Estimates only, not a quote.