The static water pressure is water at rest, which means it is measured when no water is flowing. Attach a pressure gauge to a water spigot and make sure all other water sources are shut-off, then turn on the spigot
While sprinklers with fixed heads tend to perform better in low water pressure situations than those that move, you can still find rotating sprinklers that can operate with water pressures under 40 psi. Table Of Contents Will sprinkler work with