The outdoor spigot of my backyard is 3 GPM (gallons per minute), without a hose attached. I filled 8 cups in 10 seconds. Is this low, expected or high? It seems low to me.
Looking at the plumbing under the house (everything is copper), I noticed that it switches from 3/4" to 1/2" before it gets to the kitchen, and proceeding to backyard. Would this transition be a cause of a reduced flow rate? I was under the impression that pipe should be 3/4" the whole way until it finally gets to the fixture (sink, spigot, toilet, etc). The pipe run from front-of-house/sidewalk (water entrance) to backyard spigot is about 55', so I guess maybe 25' is 1/2" pipe.