Actually, I have an in-ground well pump.
I also realized that the PEX to the spigot steps down to 1/2 inch so that would restrict the flow as well. I do have access to the exterior wall to install either an additional 3/4 inch frost free anti-siphon hose bib or simply replace the existing 1/2 inch one. Though I think the current manifold being used for the exterior distribution is 1/2 inch so I'd have to bypass that for a 3/4 inch run.
I'll also need to order a 3/4 inch hose as I don't think I currently have one that size.
Sounds like I can probably get a test done this weekend and at least confirm the flow rate.
